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Model 42i-HL - User Manual

Contents

1. 1 3 Chapter 2 Installation 2 1 Lifting 2 1 Unpacking and Inspection 2 1 Setup Procedure 2 2 Startup 2 5 Chapter 3 Operation 3 1 Display 3 2 Pushbuttons 3 3 Soft Keys 3 4 Software Overview 3 4 Power Up Screen 3 6 Run Screen 3 6 Main Menu 3 7 Range Menu 3 8 Single Range Mode 3 8 Dual Rang
2. 8 1 NO2 to NO Converter 8 2 Mode Solenoid 8 2 Reaction Chamber 8 2 Optical Filter 8 3 Pressure Transducer 8 3 Ozonator 8 3 Ozonator Flow Switch 8 3 Photomultiplier Tube 8 3 Photomultiplier Tube Cooler 8 3 External Pump 8 3 Sample Capillary 8 3 Dry Air Capillary 8 4 Software 8 4 Instrument Control 8 4 Monitoring Signals 8 4 Measurement Calculations 8 5 Output Communication
3. 3 30 Auto Manual Mode 3 30 Datalogging Settings 3 31 Communication Settings 3 41 I O Configuration 3 49 Temperature Compensation 3 61 Pressure Compensation 3 62 Screen Contrast 3 63 Service Mode 3 63 Date Time 3 64 Diagnostics Menu 3 64 Program Version 3 65 Voltages 3 65 Temperatures 3 67 Pressure 3 67 Flow 3 67 Analog Input Readings 3 68 Analog Input Voltages
4. 3 100 Unlock Instrument 3 100 Chapter 4 Calibration 4 1 Equipment Required 4 1 Pre Calibration 4 1 Calibration 4 2 Connecting the GPT Apparatus 4 3 Dynamic Parameter Specifications for Gas Phase Titrator 4 4 Adjusting Instrument Gain 4 6 Preparing NO NOx and NO2 Calibration Curves 4 9 Calibration in Dual Range and Auto Range Mode 4 11 Calibrate Low NO 4 13 Calibrate Low NOx 4 13 Calibrate Low NO2 4 14 Calibrate High NO 4 14 Calibrate High NOx 4 15 Calibrate High NO2 4 15 Zero and Span Check 4 16 Chapter 5 Preventive Maintenanc
5. 7 3 Firmware Updates 7 4 Replacement Parts List 7 4 Cable List 7 6 Removing the Measurement Bench and Lowering the Partition Panel 7 8 Pump Replacement 7 9 Fan Replacement 7 10 PMT Cooler and Reaction Chamber Assembly Replacement 7 11 Photomultiplier Tube Replacement 7 13 PMT High Voltage Power Supply Replacement 7 15 PMT Voltage Adjustment 7 17 Reaction Chamber Cleaning or Removal 7 18 NO2 to NO Converter Replacement 7 20 Solenoid Valve Replacement 7 22 Ozonator Assembly Replacement 7 23 Ozonator Transformer Replacement 7 25 Input Board Replacement 7 25 Input Board Calibration
6. 8 5 Electronics 8 6 Motherboard 8 6 Measurement Interface Board 8 7 Pressure Sensor Assembly 8 7 Temperature Control Board 8 7 PMT Power Supply Assembly 8 8 Input Board Assembly 8 8 Digital Output Board 8 8 I O Expansion Board Optional 8 8 Front Panel Connector Board 8 9 I O Components 8 9 Analog Voltage Outputs 8 9 Analog Current Outputs Optional 8 10 Analog Voltage Inputs Optional 8 10 Digital Relay Outputs 8 10 Digital Inputs 8 10 Serial Ports 8 11 RS 232 Connection
7. B 1 Instrument Identification Number B 2 Commands B 2 Measurements B 9 Alarms B 12 Diagnostics B 16 Datalogging B 17 Calibration B 24 Keys Display B 27 Measurement Configuration B 29 Hardware Configuration B 32 Communications Configuration B 36 I O Configuration B 40 Record Layout Definition B 44 Appendix C MODBUS Protocol C 1 Serial Communication Parameters C 2 TCP Communication Parameters C 2 Application Data Unit Definition
8. 3 82 PMT Voltage Adjustment 3 83 Range Mode Select 3 83 Converter Set Temperature 3 84 Pressure Calibration 3 84 Flow Calibration 3 87 Input Board Calibration 3 89 Temperature Calibration 3 91 Analog Output Calibration 3 92 Analog Input Calibration 3 94 Ozonator Safety 3 95 Dilution Ratio 3 96 Display Pixel Test 3 96 Restore User Defaults 3 97 Password 3 98 Set Password 3 98 Lock Instrument 3 99 Change Password 3 99 Remove Password
9. 8 11 RS 485 Connection 8 12 Ethernet Connection 8 12 External Accessory Connector 8 12 Contents x Model 42i High Level Instruction Manual Thermo Fisher Scientific Chapter 9 Optional Equipment 9 1 Internal Zero Span Assembly 9 1 Bypass Flow 9 3 Permeation Dryer Assembly 9 3 Ammonia Scrubber 9 3 Teflon Particulate Filter 9 4 Ozone Particulate Filter 9 4 NO2 to NO Converter 9 4 I O Expansion Board Assembly 9 4 Terminal Block and Cable Kits 9 4 Mounting Options 9 5 Appendix A Warranty A 1 Appendix B C Link Protocol Commands
10. 3 11 Default Analog Outputs in Auto Range Mode 3 13 Operating Ranges 3 15 Analog Output Zero to Full Scale Table 3 55 Signal Type Group Choices 3 56 Troubleshooting General Guide 6 2 Troubleshooting Alarm Messages 6 3 Motherboard Connector Pin Descriptions 6 8 Measurement Interface Board Connector Pin Descriptions 6 13 Front Panel Board Connector Pin Diagram 6 16 I O Expansion Board Optional Connector Pin Descriptions 6 18 Digital Output Board Connector Pin Descriptions 6 19 Input Board Connector Pin Descriptions 6 20 Temperature Control Board Connector Pin Descriptions 6 21 Model 42i High Level Replacement Parts 7 4 Model 42i High Level Cables 7 6 Analog Output Channels and Rear Panel Pin Connections 7 30 RS 232
11. C 2 Function Codes C 3 MODBUS Commands Supported C 8 Appendix D Geysitech Bayern Hessen Protocol D 1 Figures Thermo Fisher Scientific Model 42i High Level Instruction Manual xi Figures Model 42i High Level Flow Schematic 1 3 Model 42i High Level Rear Panel 2 2 Atmospheric Dump Bypass Plumbing 2 3 Twin Head Vacuum Pump Installation 2 4 42i High Level Front Panel Display 3 2 Front Panel Pushbuttons 3 3 Flowchart of Menu Driven Software 3 5 Pin Out of Rear Panel Connector in Single Range Mode 3 9 Pin Out of Rear Panel Connector in Dual Range Mode 3 10 Analog Output in Auto Range Mode 3 12 Pin Out of Rear Panel Connector in Auto Range Mode 3 13 GPT System 4 3 Inspecting and Replacing the Capillaries 5 3 Rebuilding the Pump 5 6 Board Level Connection Diagram Common Ele
12. 7 27 DC Power Supply Replacement 7 28 Analog Output Testing 7 29 Analog Output Adjustment 7 31 Pressure Transducer Assembly Replacement 7 32 Pressure Transducer Calibration 7 34 Temperature Control Board Replacement 7 36 Ambient Temperature Calibration 7 36 Fuse Replacement 7 38 Scrubber Replacement 7 38 I O Expansion Board Optional Replacement 7 39 Digital Output Board Replacement 7 40 Motherboard Replacement 7 41 Contents Thermo Fisher Scientific Model 42i High Level Instruction Manual ix Measurement Interface Board Replacement 7 42 Front Panel Board Replacement 7 43 LCD Module Replacement 7 44 Service Locations 7 46 Chapter 8 System Description 8 1 Hardware
13. Range Menu on page 3 8 describes the gas units NO NO2 NOx ranges and custom ranges Averaging Time on page 3 17 describes the averaging period applied to NO NO2 and NOx measurements Calibration Factors Menu on page 3 18 describes the calibration factors used to correct NO NO2 and NOx measurement readings Calibration Menu on page 3 22 describes calibration of zero and span Instrument Controls Menu on page 3 29 describes the instrument hardware control and configuration Diagnostics Menu on page 3 64 describes the diagnostic information and functions Alarms Menu on page 3 72 describes a list of items that are monitored by the analyzer Service Menu on page 3 82 describes service related menu items Password on page 3 98 describes how to enter change a password lock and unlock the instrument Operation Display 3 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific Display The 320 x 240 graphics liquid crystal display LCD shows the sample concentrations instrument parameters instrument controls help and error messages Some menus contain more items than can be displayed at one time For these menus use and to move the cursor up and down to each item Figure 3 1 42i High Level Front Panel Display CAUTION If the LCD panel breaks do not let the liquid crystal contact your skin or clothes If
14. 3 68 Digital Inputs 3 69 Relay States 3 69 Test Analog Outputs 3 69 Instrument Configuration 3 71 Contact Information 3 71 Alarms Menu 3 72 Internal Temperature 3 73 Chamber Temperature 3 74 Cooler Temperature 3 75 Converter Temperature 3 76 Pressure 3 77 Flow 3 78 Ozonator Flow 3 78 Zero and Span Check 3 79 Zero and Span Auto Calibration 3 80 NO NO2 and NOx Concentration 3 80 Contents Thermo Fisher Scientific Model 42i High Level Instruction Manual vii Service Menu
15. Send set addr dns 192 168 1 1 Receive set addr dns 192 168 1 1 ok addr gw This command reports the default TCP IP gateway address Send addr gw Receive addr gw 192 168 1 1 set addr gw address This command sets the default gateway address where address consists of four numbers ranging from 0 255 inclusive separated by Send set addr gw 192 168 1 1 Receive set addr gw 192 168 1 1 ok addr ip This command reports the IP address of the analyzer Send addr ip Receive addr ip 192 168 1 15 set addr ip address This command sets the analyzer s IP address where address consists of four numbers ranging from 0 255 inclusive separated by Send set addr ip 192 168 1 15 Receive set addr ip 192 168 1 15 ok C Link Protocol Commands Communications Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 37 addr nm This command reports the TCP IP netmask address Send addr nm Receive addr nm 255 255 255 0 set addr nm address This command sets the netmask address where address consists of four numbers ranging from 0 255 inclusive separated by Send set addr nm 255 255 255 0 Receive set addr nm 255 255 255 0 ok baud This command reports the current baud rate for the serial port RS232 RS485 The example below reports that the current baud rate is 9600 Send baud Receive baud 9600 set baud rate rate 1200 2400 4800 9600
16. In the Main Menu choose Service gt Ozonator Safety Press to toggle and set the service mode on or off ANALOG INPUT CAL ZERO DISCONNECT SELECTED INPUT SELECTED INPUT INPUT 1 CURRENTLY 6 24 V CALIBRATE INPUT TO ZERO RANGE AVG DIAGS ALARM ANALOG INPUT CAL SPAN PROVIDE VOLTAGE TO INPUT SELECTED INPUT INPUT 1 CURRENTLY 6 24 V SET TO 10 00 V CALIBRATE TO VALUE RANGE AVG DIAGS ALARM Operation Service Menu 3 96 Model 42i High Level Instruction Manual Thermo Fisher Scientific Dilution Ratio The Dilution Ratio screen allows the user to view and set the dilution ratio Acceptable values are 1 500 1 The default is 1 1 When this value is set the dilution ratio is applied to all concentration measurements This screen is displayed if the dilution ratio option is installed In the Main Menu choose Service gt Dilution Ratio Use and to move and change the value Press to save set to value as actual value Display Pixel Test The Display Pixel Test is used to test the LCD display The display pixel test screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter In the Main Menu choose Service gt Display Pixel Test Press to begin test by turning all pixels on then toggle between on or off OZONATOR SAFETY CURRENTLY OFF SET TO ON TOGGLE VALUE RANGE AVG D
17. 2 Disconnect the two PMT high voltage supply cables 3 Loosen the two retaining screws securing the assembly bracket to the floor plate and slide the assembly towards the rear slightly and lift it off the base screws Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing PMT High Voltage Power Supply Replacement 7 16 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 7 8 Replacing the PMT HVPS 4 Loosen two screws on the input box assembly and lift the input box assembly off the power supply 5 Remove the four screws securing the power supply to the bracket and remove the power supply 6 To install the power supply follow the previous steps in reverse 7 Recalibrate the instrument Refer to the calibration procedures in the Calibration chapter Assembly Bracket Input Box Screws 2 Assembly Bracket Screws 2 Input Box Assembly HVPS Servicing PMT Voltage Adjustment Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 17 PMT Voltage Adjustment Use the following procedure to adjust the PMT voltage after switching from standard to extended ranges or vice versa 1 Select the NO NO2 and NOx ranges Refer to Range Menu in the Calibration chapter 2 Set the NO BKG and NOx BKG calibration factors to 0
18. MODBUS Protocol MODBUS Commands Supported Thermo Fisher Scientific 42i High Level Instruction Manual C 9 23 NOT USED 24 PRESSURE ALARM 25 FLOW ALARM 26 OZONE FLOW ALARM 27 MOTHERBOARD STATUS ALARM 28 INTERFACE BD STATUS ALARM 29 I O EXP BD STATUS ALARM 30 NOT USED 31 CONC ALARM 32 SAMPLE MODE Table C 2 Read Registers for 42i High Level Register Number Variable 40001 amp 40002 NO 40003 amp 40004 NO2 40005 amp 40006 NOx 40007 amp 40008 NOT USED 40009 amp 40010 NOT USED 40011 amp 40012 LO NO 40013 amp 40014 LO NO2 40015 amp 40016 LO NOx 40017 amp 40018 NOT USED 40019 amp 40020 NOT USED 40021 amp 40022 HI NO 40023 amp 40024 HI NO2 40025 amp 40026 HI NOx 40027 amp 40028 NOT USED 40029 amp 40030 NOT USED 40031 amp 40032 RANGE NOx 40033 amp 40034 NOT USED 40035 amp 40036 INT TEMP 40037 amp 40038 CHAMBER TEMP Table C 1 Read Coils for 42i High Level continued Coil Number Status MODBUS Protocol MODBUS Commands Supported C 10 42i High Level Instruction Manual Thermo Fisher Scientific 40039 amp 40040 COOLER TEMP 40041 amp 40042 NO2 CNV TEMP 40043 amp 40044 NOT USED 40045 amp 40046 NOT USED 40047 amp 40048 NOT USED 40049 amp 40050 CHAMBER PRES 40051 amp 40052 FLOW 40053 amp 40054 PMT VOLTS 40055 amp 40056 ANALOG IN 1 40057 amp 40058 ANALOG IN 2 40059 amp 40060 ANALOG IN 3 40061 amp 40062 AN
19. Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 1 Chapter 7 Servicing This chapter explains how to replace the Model 42i High Level subassemblies It assumes that a subassembly has been identified as defective and needs to be replaced For fault location information refer to the Preventive Maintenance chapter and the Troubleshooting chapter in this manual The service mode in the Operation chapter also includes parameters and functions that are useful when making adjustments or diagnosing problems The service mode includes some of the same information found in the Diagnostic menu however readings are updated every second in the service mode compared with every 10 seconds in the Diagnostics menu For additional service assistance see Service Locations at the end of this chapter This chapter includes the following parts information and component replacement procedures Safety Precautions on page 7 3 Firmware Updates on page 7 4 Replacement Parts List on page 7 4 Cable List on page 7 6 Removing the Measurement Bench and Lowering the Partition Panel on page 7 8 Pump Replacement on page 7 9 Replacing a Fan on page 7 11 PMT Cooler and Reaction Chamber Assembly Replacement on page 7 11 Photomultiplier Tube Replacement on page 7 13 Servicing 7 2 Model 42i High Level Instr
20. LREC FIELDS gt FIELD 1 NO FIELD 2 NOX FIELD 3 PRES FIELD 4 PMTT FIELD 5 INTT FIELD 6 CONVT FIELD 7 NONE RANGE AVG DIAGS ALARM DATA IN LREC FIELD 1 gt CONCENTRATIONS OTHER MEASUREMENTS ANALOG INPUTS RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 36 Model 42i High Level Instruction Manual Thermo Fisher Scientific Concentrations The Concentrations screen allows the user to select the output signal that is tied to the selected field item The selected item is shown by lt after it Note that at this point pressing indicates that these are proposed changes as opposed to implemented changes To change the selected record format and erase record log file data see Commit Content below Range NOx is visible only in auto range mode In the Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content gt Select Field gt Concentrations Use and to move the cursor up and down Press to select a new choice Other Measurements The Other Measurements screen allows the user to select the output signal that is tied to the selected field item The selected item is shown by lt after it Note that at this point pressing indicates that these are proposed changes as opposed to implemented changes To change the selected record format and erase record log file data see Commit Content below In the Main Menu choose Instrument Controls
21. 1 Ethernet Output 2 Ethernet Output 3 Ethernet Input 4 NC 5 NC 6 Ethernet Input 7 NC 8 NC EXPANSION BD J3 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 RS485 to Expansion Board 8 RS485 to Expansion Board Troubleshooting Connector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 9 SPARE DATA J4 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 RS485 to Spare Board 8 RS485 to Spare Board I O J5 1 Power Fail Relay N C Contact 2 Ground 3 TTL Input 1 4 TTL Input 2 5 Ground 6 TTL Input 5 7 TTL Input 7 8 TTL Input 8 9 TTL Input 10 10 Ground 11 TTL Input 13 12 TTL Input 15 13 Ground 14 Analog Voltage Output 1 15 Analog Voltage Output 3 16 Ground 17 Analog Voltage Output 5 18 Ground 19 Ground 20 Power Fail Relay COM 21 Power Fail Relay N O Contact 22 Ground 23 TTL Input 3 24 TTL Input 4 25 TTL Input 6 Table 6 3 Motherboard Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Descriptions Troubleshooting Connector Pin Descriptions 6 10 Model 42i High Level Instruction Manual Thermo Fisher Scientific 26 Ground 27 TTL Input 9 28 TTL Input 11 29 TTL Input 12 30 TTL Input 14 31 TTL Input 16 32 Ground 33 Analog Voltage Output 2 34 Ana
22. 2 Output format see set erec lrec srec format format command These commands report the last long and short records stored or the dynamic data record In the example below the command requests a long record with no checksum in ASCII format with text For details on how to decode the flag fields within these records see Figure B 1 in the flags command Send lr01 Receive lr01 12 31 02 22 03 flags 54089100 no 8413E 1 nox 8485E 1 lono 6471E 1 lonox 6527E 1 pres 130 9 pmtt 53 2 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 115 erec This command returns a brief description of the main operating conditions at the time the command is issued i e dynamic data The example below shows a typical response The format is defined by the current settings of format and erec format commands For details on how to decode the flag fields within these records see Figure B 1 in the flags command Send erec Receive erec 10 11 04 06 05 flags DD008000 no 0 000 nox 0 000 no2 0 000 1 lono 147 500 lonox 0 000 lono2 0 000 1 pmtv 805 491 tempal 1 pres 172 278 pcal 150 000 smplf 0 000 ozonf 0 050 hiavgtime 10 loavgtime 10 nobkg 0 000 noxbkg 0 000 nocoef 1 000 noxcoef 1 000 no2coef 1 000 lonocoef 1 000 lonoxcoef 1 000 lono2coef 1 000 norange 100000 000 noxrange 100000 000 no2range 100000 000 lonorange 100000 000 lonoxrange 100000 000 lono2range 100000 000 lrec srec lrec xxxx yy srec xxxx yy lrec aa
23. 3 Pull the scrubber off the mounting clips 4 Push the replacement scrubber into the mounting clips Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing I O Expansion Board Optional Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 39 5 Attach the Teflon tubing at both ends of the scrubber 6 Replace the cover Figure 7 17 Replacing the Scrubber I O Expansion Board Optional Replacement Use the following procedure to replace the optional I O expansion board Figure 7 18 Equipment Required I O expansion board Nut driver 3 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Unplug the I O expansion board cable from the EXPANSION BD connector on the motherboard 3 Remove the standoffs holding the I O expansion board connector to the rear panel Figure 7 19 Ammonia Scrubber Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Digital Output Board Replacement 7 40 Model 42i High Level Instruction Manual Thermo Fisher Scientific 4 Pop off the board from the mounting studs and remove the board 5 To install the I O expansion board follow
24. 3 Set the high NO2 calibration gas concentration to reflect the sum of the NO2 concentration generated by GPT and any NO2 impurity Use to move the cursor left and right and use to increment and decrement the numeric character at the cursor 4 Press to calculate and save the new high NO2 coefficient based on the entered span concentration You can change the calibration factors by using the Calibration Factors menu This is often useful in a troubleshooting situation However after the above calibration procedure is completed all subsequent data reduction depends on the calibration parameters remaining the same as during the initial calibration Therefore never change any calibration factor without first recording the value so that after any troubleshooting procedure is completed the initial value can be re entered thereby not altering the multipoint calibration Zero and Span Check The analyzer requires initial and periodic calibration according to the procedures outlined in this manual Initially the frequency of the calibration procedure should be determined by the stability of the zero and span checks which may be run daily You should generate a new calibration curve when zero and span checks indicate a shift in instrument gain of more than 10 percent from that determined during the most recent multipoint calibration You can adjust the frequency of calibration and even zero and span checks appropriately as you gain confidence w
25. SET TO 0 800 LPM MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM RESTORE DEFAULT CAL RESTORE DEFAULT CAL RESTORE RESTORE ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM RESTORE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 89 Input Board Calibration The Input Board Calibration menu is used to initiate a calibration of the input A D stages The input board calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode on page In the Main Menu choose Service gt Input Board Calibration Manual Input Calibration The Manual Input Calibration screen is used to do a manual calibration of the input board A D stages Note The measurement system and the PMT are both shut off inside this screen In the Main Menu choose Service gt Input Board Calibration gt Manual Input Cal Press to leave warning screen Make a note of the frequency at gain of 1 Use and to change the gain between 10 and 100 Use and to increment or decrement the D A counts so the frequency at gain 100 is equal to the frequency at gain 1 WARNING This adjustment should only be performed by an instrument service technician INPUT BOARD CALIBRATION gt MANUAL INPUT CAL AUTOMATIC INPUT CAL INPUT FREQUENCY DISP RANGE AVG DIAGS ALARM
26. The Interface Board screen read only is used to display the current voltage readings on the interface board In the Main Menu choose Diagnostics gt Voltages gt Interface Board Voltages I O Board Voltages The I O Board screen read only is used to display the current voltage readings on the I O expansion board This screen is displayed if the I O expansion board option is installed In the Main Menu choose Diagnostics gt Voltages gt I O Board Voltages MOTHERBOARD VOLTAGES 3 3 SUPPLY 3 3 V 5 0 SUPPLY 5 0 V 15 0 SUPPLY 15 0 V 24 0 SUPPLY 24 0 V 3 3 SUPPLY 3 3 V RANGE AVG DIAGS ALARM INTERFACE BOARD VOLTAGES PMT SUPPLY 785 5 V 3 3 SUPPLY 3 3 V 5 0 SUPPLY 5 0 V 15 0 SUPPLY 15 0 V P15 0 SUPPLY 15 0 V 24 0 SUPPLY 24 0 V 15 0 SUPPLY 15 0 V RANGE AVG DIAGS ALARM I O BOARD VOLTAGES 3 3 SUPPLY 3 3 V 5 0 SUPPLY 5 0 V 15 0 SUPPLY 15 0 V 24 0 SUPPLY 24 0 V 3 0 SUPPLY 3 0 V RANGE AVG DIAGS ALARM Operation Diagnostics Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 67 Temperatures The Temperatures screen read only displays the internal temperature reaction chamber temperature cooler temperature and converter temperatures The internal temperature is the air temperature measured by a sensor located on the interface board In the Main Menu choose Diagnostics gt Temperatures Pressure The Pressure screen read only displays the reaction chamber press
27. high no high no2 high nox low no low no2 low nox These commands report the measured NO NO2 and NOx concentrations when operating in single range or high and low NO NO2 and NOx when operating in dual or auto range mode The example below shows that the NO concentration is 62 7 ppm Send no Receive no 6270E 2 ppm conv temp This command reports the current NO2 converter temperature The example below reports that the current converter temperature is 625 C Send conv temp Receive conv temp 625 deg C cooler temp This command reports the photomultiplier tube cooler temperature The example below reports that the PMT cooler temperature is 2 8 C Send pmt temp Receive pmt temp 2 8 deg C flow This command reports the current measured flow The example below reports that the flow measurement is 0 700 LPM Send flow Receive flow 0 7 l min internal temp This command reports the current internal instrument temperature The example below shows that the internal temperature is 28 6 C Send internal temp Receive internal temp 28 6 deg C actual 28 6 C Link Protocol Commands Measurements Thermo Fisher Scientific Model 42i High Level Instruction Manual B 11 pmt temp This command reports the PMT cooler temperature The example below reports that the PMT cooler temperature is 2 8 C Send pmt temp Receive pmt temp 2 8 deg C pmt voltage This command reports the current PMT voltage The
28. high range no2 Reports selects current NO2 high range B 29 high range nox Reports selects current NOx high range B 29 host name Reports sets host name string B 38 instr name Reports instrument name B 39 instrument id Reports sets instrument id B 39 internal temp Reports current internal instrument temperature B 10 isc iscreen Retrieves framebuffer data used for the display B 27 layout ack Disables stale layout layout changed indicator B 40 le left Simulates pressing left pushbutton B 27 list din Lists current selection for digital input B 17 list dout Lists current selection for digital output B 17 list lrec Lists current selection lrec logging data B 17 list sp Lists current selection in the scratchpad list B 17 list srec Lists current selection srec logging data B 17 list stream Lists current selection streaming data output B 17 list var aout Reports list of analog output index numbers and variables B 43 list var din Reports list of digital input index numbers and variables B 43 list var dout Reports list of digital output index numbers and variables B 43 low avg time Reports sets low averaging time B 9 low no Reports NO concentration calculated with low range coefficients B 10 low no coef Reports sets low range NO coefficient B 25 low no gas Reports sets low range NO span gas concentration B 25 low no2 Reports NO2 concentration calculated wi
29. or reset to normal Full scale sets the analog outputs to the full scale voltage zero sets the analog outputs to 0 volts and normal operation The example below shows the selected output state ALL is set to normal In the Main Menu choose Diagnostics gt Test Analog Outputs gt ALL Voltage Channel 1 6 or Current Channel 1 6 Use and to move the cursor up and down Press to select a choice TEST ANALOG OUTPUTS gt ALL VOLTAGE CHANNEL 1 VOLTAGE CHANNEL 2 VOLTAGE CHANNEL 3 VOLTAGE CHANNEL 4 VOLTAGE CHANNEL 5 VOLTAGE CHANNEL 6 RANGE AVG DIAGS ALARM SET ANALOG OUTPUTS SETTING ALL OUTPUT SET TO NORMAL SET TO FULL SCALE SET TO ZERO RESET TO NORMAL RANGE AVG DIAGS ALARM Operation Diagnostics Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 71 Instrument Configuration The Instrument Configuration screen displays information on the hardware configuration of the instrument Note If the analyzer is in service mode pressing on the item will toggle it yes or no In the Main Menu choose Diagnostics gt Instrument Configuration Press to toggle instrument configuration in service mode only Contact Information The Contact Information screen displays the customer service information In the Main Menu choose Diagnostics gt Contact Information INSTRUMENT CONFIGURATION gt I O EXPANSION BOARD YES ZERO SPAN VALVES YES LAG VOLUME YES PERM DR
30. press gt to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at the beginning of Step 3 to access the Calibrate Ambient Temperature screen 4 Wait at least 10 seconds for the ambient reading to stabilize use and to enter the known temperature and press to save the temperature value Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Fuse Replacement 7 38 Model 42i High Level Instruction Manual Thermo Fisher Scientific 5 Install the cover Fuse Replacement Use the following procedure to replace the fuse Equipment Required Replacement fuses 250VAC 4 Amp SlowBlow for 100VAC and 110VAC models 250VAC 2 Amp SlowBlow for 220 240VAC models 1 Turn instrument OFF and unplug the power cord 2 Remove fuse drawer located on the AC power connector 3 If either fuse is blown replace both fuses 4 Insert fuse drawer and reconnect power cord Scrubber Replacement Use the following procedure to replace the ammonia scrubber Figure 7 17 Equipment Required Ammonia scrubber 1 Turn instrument OFF unplug the power cord and remove the cover 2 Unscrew the Teflon tubing at both ends of the scrubber
31. 0 Refer to Calibration Factors Menu in the Calibration chapter 3 Set the NO COEF NOx COEF and NO2 COEF to 1 000 4 Set the Averaging Time to 10 seconds Refer to Averaging Time in the Calibration chapter 5 Connect the calibration gas and allow the instrument to sample calibration gas until the reading stabilizes 6 From the Main Menu press to scroll to Service gt press gt to scroll to PMT Voltage Adjustment gt and press The Set PMT Voltage screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at the beginning of Step 6 to display the Set PMT Voltage screen WARNING The service procedures in this manual are restricted to qualified service representatives Servicing Reaction Chamber Cleaning or Removal 7 18 Model 42i High Level Instruction Manual Thermo Fisher Scientific 7 At the Set PMT Voltage screen use to increment decrement the counts until the instrument displays the calibration gas concentration value Reaction Chamber Cleaning or Removal Use the following procedure to clean and or remove the reaction chamber see Figure 7 9 Equi
32. 19200 38400 57600 115200 This command sets the instrument baud rate The example below sets the instrument s baud rate to 115200 Note After the command is sent the baud rate of the sending device must be changed to agree with the instrument Send set baud 115200 Receive set baud 115200 ok dhcp This command reports the current state of use of DHCP on or off DHCP is used to assign an IP address to the analyzer automatically The example below shows that DHCP is on Send dhcp Receive dhcp on set dhcp onoff These commands enables and disables the DHCP service by either on or off Changes to this parameter will only take effect when the analyzer is powered up The example below sets the DHCP service on C Link Protocol Commands Communications Configuration B 38 Model 42i High Level Instruction Manual Thermo Fisher Scientific Note When DHCP is set to on the user supplied addr gw addr dns addr ip and addr nm parameters are not used Send set dhcp on Receive set dhcp on ok format This command reports the current reply termination format The example below shows that the reply format is 00 which means reply with no checksum according to Table B 8 Send format Receive format 00 set format format This command sets the reply termination format where format is set according to Table B 8 The example below sets the reply termination format to checksum Send set format 01 Receive set fo
33. 2 Basic Command Structure on page D 2 Block Checksum on page D 3 Geysitech Commands on page D 3 The following are the communication parameters that are used to configure the serial port of the iSeries to support Geysitech protocol Number of Data bits 8 Number of Stop bits 1 Parity None Data rate from 1200 115200 Baud 9600 is default Serial Communication Parameters Geysitech Bayern Hessen Protocol TCP Communication Parameters D 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific iSeries Instruments support the Geysitech TCP protocol over TCP IP The register definition is the same as for the serial interface TCP connection port for Geysitech 9882 The Geysitech instrument address has a value between 0 and 127 and is represented by 3 digit ASCII number with leading zeros or leading spaces if required e g Instrument address of 1 is represented as 001 or lt SP gt lt SP gt 1 The instrument Address is the same as the Instrument ID used for C Link and MODBUS commands This can be set via the front panel The Instrument Address is represented by lt address gt in the examples throughout this document Note Device IDs 128 through 247 are not supported because of limitations imposed by the C Link protocol The following is a list of abbreviations used in this document lt CR gt is abbreviation for Carriage Return ASCII code 0x0D lt ST
34. 4 Pin 5 Pin SAMPLE FLOW TEMP CONTROL 6 Pin FAN1 2 Pin 2 Pin 2 Pin OZONATOR 2 Pin INPUT BOARD 7 Pin PMT HV PS PMT 2 Cond 10 Pin 2 Cond Coax PMT ANODE MJ8 MJ10 PJ8 MJ3 MJ15 PJ9 MJ17 PJ4 PJ5 PJ1 OJ1 PJ10 PJ7 PJ11 J1 OZ FLOW SW 4 Pin 2 Pin HEATER 15V 1W amp OVEN THERM J2 MJ9 2 Pin SPARE 1 SOL PJ12 PJ13 POJ3 POJ1 MJ14 2 Pin J2 J1 PERM OVEN OPTIONAL AC AC J4 J3 J5 CONVERTER HEATER 90W BENCH HEATER 60w CONVERTER THERMOCOUPLE 2 Pin 3 Pin 4 Pin AC AC IPJ8 P1 2 Pin 24VDC 3 Pin AC TO COMMON ELECTRONICS PJ3 PJ6 Troubleshooting Connector Pin Descriptions 6 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific Connector Pin Descriptions The connector pin descriptions in Table 6 3 through Table 6 9 can be used along with the board level connection diagrams to troubleshoot board level faults Table 6 3 Motherboard Connector Pin Descriptions Connector Label Reference Designator Pin Signal Descriptions INTF DATA J1 1 Ground 2 RS485 to Interface Board 3 RS485 to Interface Board 10 BASE T J2 1 Ethernet Output 2 Ethernet Output 3 Ethernet Input 4 NC 5 NC 6 Ethernet Input 7 NC 8 NC INTF DATA J1 1 Ground 2 RS485 to Interface Board 3 RS485 to Interface Board 10 BASE T J2
35. 50 HI NOx RANGE 100 LO NOx RANGE 50 RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM SET CUSTOM RANGES Operation Range Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 9 Figure 3 4 Pin Out of Rear Panel Connector in Single Range Mode Table 3 2 Default Analog Outputs in Single Range Mode Note All channels are user definable If any customization has been made to the analog output configuration the default selections may not apply Channel Pin Description 1 14 NO Analog Output 2 33 NO2 Analog Output 3 15 NOx Analog Output 4 34 None 5 17 None 6 36 None Ground 16 18 19 35 37 Signal Ground Operation Range Menu 3 10 Model 42i High Level Instruction Manual Thermo Fisher Scientific Dual Range Mode In the dual range mode there are two independent channels defined for each compound being measured These are labeled simply as the High Range and the Low Range Each channel has its own analog output range averaging time and span coefficient This enables the sample concentration readings to be sent to the analog outputs using two different ranges For example the low NO analog output can be set to output concentrations from 0 to 50 ppm and the high NO analog output set to output concentrations from 0 to 100 ppm In addition to each channel having two ranges each channel has two span coefficients There are two span coefficients so that each range can be
36. AUTOCAL OK SPAN AUTOCAL OK NO CONCENTRATION OK NO2 CONCENTRATION OK NOx CONCENTRATION OK MOTHERBOARD STATUS OK INTERFACE STATUS OK I O EXP STATUS OK Operation Alarms Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 73 Internal Temperature The Internal Temperature screen displays the current internal temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 8 to 47 C If the internal temperature reading goes beyond either the minimum or maximum alarm limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu In the Main Menu choose Alarms gt Internal Temp Min and Max Internal Temperature Limits The Minimum Internal Temperature alarm limit screen is used to change the minimum internal temperature alarm limit The minimum and maximum internal temperature screens function the same way In the Main Menu choose Alarms gt Internal Temp gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value INTERNAL TEMPERATURE ACTUAL 28 6 oC gt MIN 15 0 oC MAX 45 0 oC RANGE AVG DIAGS ALARM INTERNAL TEMPERATURE ACTUAL MIN 15 0 oC SET MIN TO 16 0 oC INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Alarms Menu 3 74 Model 42i High Level Instruction Manual Thermo Fisher Scientific Chamber Temperature The Chamber Temperature screen
37. Bytes 0x0000 to 0xFFFF Number of following bytes Unit Identifier 1 Byte 0x00 to 0xFF Passed back in response MODBUS Protocol Function Codes Thermo Fisher Scientific 42i High Level Instruction Manual C 3 A Slave address is not required in MODBUS over TCP IP because the higher level protocols include device addressing The unit identifier is not used by the instrument Function Code The function code is a single byte in length The following function codes are supported by the instrument Read Coils 0x01 Read Inputs 0x02 Read Holding Registers 0x03 Read Input Registers 0x04 Force Write Single Coil 0x05 Read Exception Status 0x07 If a function code is received that is not in this list and invalid function exception is returned Data The data field varies depending on the function For more description of these data fields see Function Codes below Error Check In MODBUS over Serial an error check is included in the message This is not necessary in MODBUS over TCP IP because the higher level protocols ensure error free transmission The error check is a two byte 16 bit CRC value Function Codes This section describes the various function codes that are supported by the Model 42i High Level 0x01 0x02 Read Coils Read Inputs Read Coils Inputs reads the status of the digital outputs relays in the instrument Issuing either of these function codes will generate the sam
38. Calibration gt Span Use and to move and change the value Press to save set to value as actual value Restore Default Pressure Calibration The Restore Default Pressure Calibration screen allows the user to reset the pressure calibration configuration values to factory defaults In the Main Menu choose Service gt Pressure Calibration gt Set Defaults Press to warn user and enable restore with Use to overwrite pressure sensor calibration parameters with factory default values when pressed after CALIBRATE PRESSURE SPAN CURRENTLY 33 8 mmHg SET TO 760 0 mmHg MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM RESTORE DEFAULT CAL RESTORE DEFAULT CAL RESTORE RESTORE ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM RESTORE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 87 Flow Calibration The Flow Calibration menu is used to calibrate the flow sensor to zero span or restore factory default values The flow calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter In the Main Menu choose Service gt Flow Calibration Calibrate Flow Zero The Calibrate Flow Zero screen calibrates the flow sensor at zero flow Note The pump must be disconnected before performing
39. Check the pump for a tear in the diaphragm replace with pump repair kit if necessary Refer to Preventive Maintenance chapter in this manual Check that capillaries are properly installed and O rings are in good shape Replace if necessary Check flow system for leaks Alarm Sample flow Sample flow Low Check sample capillary 015 inch ID for blockage Replace as necessary If using sample particulate filter make sure it is not blocked Disconnect sample particulate filter from the sample bulkhead if flow increases replace the filter Table 6 2 Troubleshooting Alarm Messages continued Alarm Message Possible Cause Action Troubleshooting Troubleshooting Guides Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 5 Alarm Ozonator Flow Ozone flow low Check ozone capillary 008 inch ID for blockage Replace as necessary Alarm NO NO2 NOX Conc Concentration has exceeded range limit Check to insure range corresponds with expected value If not select proper range Concentration low Check user defined low set point set to zero Table 6 2 Troubleshooting Alarm Messages continued Alarm Message Possible Cause Action Troubleshooting Board Level Connection Diagrams 6 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Board Level Connection Diagrams Figure 6 1 and Figure 6 2 are board level connection diagrams for the common electroni
40. DB Connector Pin Configurations 8 12 RS 485 DB Connector Pin Configuration 8 12 Mounting Options 9 5 C Link Protocol Commands B 3 Averaging Times B 9 Alarm Trigger Values B 16 Record Output Formats B 20 Stream Time Values B 24 Operating Ranges B 29 Contrast Levels B 33 Reply Termination Formats B 38 Analog Current Output Range Values B 40 Analog Voltage Output Range Values B 41 Default Output Assignment B 42 Read Coils for 42i High Level C 8 Read Re
41. DESCRIPTOR IN1 UNITS V DECIMAL PLACES 2 TABLE POINTS 2 POINT 1 POINT 2 RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 58 Model 42i High Level Instruction Manual Thermo Fisher Scientific Descriptor The Descriptor screen allows the user to enter the descriptor for the selected analog input channel The descriptor is used in datalogging and streaming data to report what data is being sent out The descriptor may be from 1 to 3 characters in length and defaults to IN1 to IN8 user input channel number In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Descriptor Press to save the new descriptor Units The Units screen allows the user to enter the units for the selected analog input channel The units are displayed on the diagnostic screen and in datalogging and streaming data The units may be from 1 to 3 characters in length and defaults to V volts In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Units Press to save the new value ANALOG INPUT DESCRIPTOR CURRENTLY IN1 IN1 ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM ANALOG INPUT UNITS CURRENTLY V VSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scien
42. Figure 2 2 Atmospheric Dump Bypass Plumbing 2 Connect the air dryer to the DRY AIR bulkhead 3 Connect the pump vacuum port inlet to the CHAMBER bulkhead Figure 2 3 Instrument Bulkhead Input Gas Line Vent to Exhaust Line at Atmospheric Pressure SAMPLE Equipment Damage DO NOT connect the pump exhaust port to the CHAMBER bulkhead This can cause permanent damage to both the cooler and the photomultiplier tube Installation Setup Procedure 2 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 2 3 Twin Head Vacuum Pump Installation 4 Connect the pump exhaust to a suitable vent or ozone scrubber Note The exhaust line used to connect the pump to the instrument should be 1 4 inch OD with a minimum ID of 1 8 inch The length of the exhaust line should be less than 10 feet Verify that there is no restriction in this line 5 Plug the pump into an outlet of the appropriate voltage and frequency 6 If the instrument is equipped with a bypass pump connect the BYPASS chamber to the accumulator and connect the accumulator to the bypass inlet 7 Connect the bypass pump exhaust to a suitable vent or ozone scrubber Installation Startup Thermo Fisher Scientific Model 42i High Level Instruction Manual 2 5 8 Connect a suitable recording device to the rear panel connector See the Operation chapter for more information about the rear panel pin outs 9 Plug the instrument into a
43. Fins Inspection and Cleaning on page 5 4 Fan Filters Inspection and Cleaning on page 5 4 Pump Rebuilding on page 5 5 Safety Precautions Read the safety precautions before beginning any procedures in this chapter Replacement Parts See the Servicing chapter for a list of replacement parts WARNING If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter Preventive Maintenance Cleaning the Outside Case 5 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific Cleaning the Outside Case Clean the outside case using a damp cloth being careful not to damage the labels on the case Ozonator Air Feed Drying Column Replacement Use the following procedure to replace the ozonator air feed drying column 1 Remove the drying column from the connector DRY AIR bulkhead on the rear panel of the instrument 2 Replace spent absorbent material indicating Drierite or silica gel with regenerated material 3 Reinstall the drying column to the DRY AIR bulkhead 4 Perform a Zero Span check see the Calibration chapter Capilla
44. High Level Instruction Manual B 45 Format Specifier for ASCII Responses The first line of the Layout response is the scanf like parameter list for parsing the fields from an ASCII ERec response Parameters are separated by spaces and the line is terminated by a n the normal line separator character Valid fields are s parse a string d parse a decimal number ld parse a long 32 bit decimal number f parse a floating point number x parse a hexadecimal number lx parse a long 32 bit hex number ignore the field Note signed versus unsigned for the integer values does not matter it is handled automatically Format Specifier for Binary Responses The second line of the Layout response is the binary parameter list for parsing the fields from a binary response Parameters MUST be separated by spaces and the line is terminated by a n Valid fields are t parse a time specifier 2 bytes D parse a date specifier 3 bytes i ignore one 8 bit character 1 byte e parse a 24 bit floating point number 3 bytes n x E parse a 24 bit floating point number 3 bytes N x f parse a 32 bit floating point number 4 bytes c parse an 8 bit signed number 1 byte C parse an 8 bit unsigned number 1 byte n parse a 16 bit signed number 2 bytes N parse a 16 bit unsigned number 2 bytes m parse a 24 bit signed number 3 bytes M parse a 24 bit unsigned number 3 bytes l parse a 32 bit signed n
45. Interface Board Capillaries 2 Fan System Description Ozonator Thermo Fisher Scientific Model 42i High Level Instruction Manual 8 3 The reaction chamber is heated and controlled to approximately 50 C in order to ensure the greatest instrument stability The sample and ozone flow capillaries and a thermistor sensor are also housed in on the reaction chamber assembly Optical Filter The optical filter housed in the reaction chamber limits the spectral region viewed by the detector and eliminates possible interferences due to other chemiluminescent reactions Pressure Transducer The pressure transducer measures the reaction chamber pressure Ozonator The ozonator generates the necessary ozone concentration required for the chemiluminescent reaction The ozone reacts with the NO in the ambient air sample to produce the electronically excited NO2 molecules Ozonator Flow Switch The ozonator flow switch located at the ozonator inlet completes an electrical safety circuit when air flows through the sensor to the ozonator If airflow stops the flow sensor breaks the electrical circuit to the ozonator and shuts it off to prevent the ozonator from overheating Photomultiplier Tube The photomultiplier tube PMT provides the infrared sensitivity required to detect the NO2 luminescence resulting from the reaction of the ozone with the ambient air sample Optical energy from the reaction is converted to an electrical signal by the
46. Model 42i High Level Instruction Manual Chemiluminescence NO NO2 NOx Analyzer Part Number 101903 00 20Dec2007 2007 Thermo Fisher Scientific Inc All rights reserved Specifications terms and pricing are subject to change Not all products are available in all countries Please consult your local sales representative for details Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin MA 02038 1 508 520 0430 www thermo com aqi Thermo Fisher Scientific WEEE Compliance WEEE Compliance This product is required to comply with the European Union s Waste Electrical amp Electronic Equipment WEEE Directive 2002 96 EC It is marked with the following symbol Thermo Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State and this product should be disposed of or recycled through them Further information on Thermo Fisher Scientific s compliance with these Directives the recyclers in your country and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive are available at www thermo com WEEERoHS Thermo Fisher Scientific Model 42i High Level Instruction Manual v Contents Chapter 1 Introduction 1 1 Principle of Operation 1 2 Specifications
47. PMT Digital Output Board The digital output board connects to the motherboard and provides solenoid driver outputs and relay contact outputs to a connector located on the rear panel of the instrument Ten relay contacts normally open with power off are provided which are electrically isolated from each other Eight solenoid driver outputs open collector are provided along with a corresponding 24VDC supply pin on the connector I O Expansion Board Optional The I O expansion board connects to the motherboard and adds the capability to input external analog voltage inputs and to output analog currents via a connector located on the rear panel of the instrument It contains local power supplies a DC DC isolator supply a sub processor and System Description I O Components Thermo Fisher Scientific Model 42i High Level Instruction Manual 8 9 analog circuits Eight analog voltage inputs are provided with an input voltage range of 0V to 10VDC Six current outputs are provided with a normal operating range of 0 to 20 mA Front Panel Connector Board The front panel connector board interfaces between the motherboard and the front panel mounted function key panel and Graphics display It serves as central location to tie the three connectors required for the function key panel the graphics display control lines and the graphics display backlight to a single ribbon cable extending back to the motherboard This board also includes signal
48. PMT and sent to the input board that transmits it to the processor Photomultiplier Tube Cooler The thermoelectric PMT cooler reduces the PMT temperature to approximately 3 C to minimize dark current and increase instrument sensitivity The cooler helps to increase zero and span stability over a wide ambient temperature range The cooler housing also shields the PMT from external electrical and optical interferences External Pump The external vacuum pump draws the reacted gasses out of the reaction chamber Sample Capillary The sample capillary along with the pump is used to control flow in the sample line System Description Software 8 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific Dry Air Capillary The dry air capillary along with the pump is used to control flow in the dry air line Software The processor software tasks are organized into four areas Instrument Control Monitoring Signals Measurement Calculations Output Communications Instrument Control Low level embedded processors are used to control the various functions on the boards such as analog and digital I O and heater control These processors are controlled over a serial interface with a single high level processor that also controls the front panel user interface The low level processors all run a common piece of firmware that is bundled with the high level firmware and loaded on power up if a different vers
49. PMT cooler temperature alarm maximum value B 13 alarm cooler temp min Reports sets PMT cooler temperature alarm minimum value B 14 alarm internal temp max Reports sets internal temperature alarm maximum value B 14 alarm internal temp min Reports sets internal temperature alarm minimum value B 14 alarm pressure max Reports sets pressure alarm maximum value B 14 alarm pressure min Reports sets pressure alarm minimum value B 14 alarm sample flow max Reports sets sample flow or bypass flow if installed alarm maximum value B 15 alarm sample flow min Reports sets sample flow or bypass flow if installed alarm minimum value B 15 alarm trig conc no Reports sets current NO concentration alarm warning value B 15 alarm trig conc no2 Reports sets current NO2 concentration alarm warning value B 15 alarm trig conc nox Reports sets current NOx concentration alarm warning value B 15 C Link Protocol Commands Commands B 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific analog iout range Reports analog current output range per channel B 40 analog vin Retrieves analog voltage input data per channel B 40 analog vout range Reports analog voltage output range per channel B 41 avg time Reports sets averaging time B 9 baud Reports sets current baud rate B 37 cal high no coef Sets auto calibrates high range NO coefficient B 24 cal high no2 coef Sets auto calibrates high range NO2 c
50. Send set analog iout range 4 1 Receive set analog iout range 4 1 ok analog vin channel This command retrieves the analog voltage input channel data both the calculated value and the actual voltage In the example below the calculated value of channel 1 is 75 325 degrees F volts are 2 796 This command responds with feature not enabled if the I O expansion board is not detected Send analog vin 1 Receive analog vin 1 75 325 2 796 Table B 9 Analog Current Output Range Values Range Output Range 1 0 20 mA 2 4 20 mA 0 cannot be set to this but may report Undefined C Link Protocol Commands I O Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 41 analog vout range channel This command reports the analog voltage output channel range where channel is between 1 and 6 inclusive according to Table B 10 Send analog vout range 2 Receive analog vout range 2 3 set analog vout range channel range This command sets analog voltage output channel to the range where channel is between 1 and 6 inclusive and range is set according to Table B 10 The example below sets channel 2 to the 0 10 V range Send set analog vout range 2 3 Receive set analog vout range 2 3 ok dig in This command reports the status of the digital inputs as a 4 digit hexadecimal string with the most significant bit MSB being input 16 Send dig in Receive dig in 0xff7f din channel
51. Signal Description Troubleshooting Connector Pin Descriptions 6 18 Model 42i High Level Instruction Manual Thermo Fisher Scientific Table 6 6 I O Expansion Board Optional Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description EXPANSION I O J1 1 Analog Voltage Input 1 2 Analog Voltage Input 2 3 Analog Voltage Input 3 4 Ground 5 Analog Voltage Input 4 6 Analog Voltage Input 5 7 Analog Voltage Input 6 8 Ground 9 Analog Voltage Input 7 10 Analog Voltage Input 8 11 Ground 12 NC 13 NC 14 Ground 15 Current Output 1 16 Current Output Return 17 Current Output 2 18 Current Output Return 19 Current Output 3 20 Current Output Return 21 Current Output 4 22 Current Output Return 23 Current Output 5 24 Current Output Return 25 Current Output 6 MOTHER BD J2 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground Troubleshooting Connector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 19 7 RS485 to Motherboard 8 RS485 to Motherboard Table 6 7 Digital Output Board Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description MOTHER BD J1 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 SPI Reset 8 SPI Input 9 SPI Output 10 SPI Board Select 11 SPI Clock DIGITAL OUTPUTS J
52. This command reports the action assigned to input channel and the corresponding active state The example below reports the input 5 to be assigned an index number 9 corresponding to action of analog outputs to zero with the active state being high Send din 5 Receive din 5 9 AOUTS TO ZERO high set din channel index state This command assigns digital input channel 1 16 to activate the action indicated by index 1 35 when the input transitions to the designated state high or low Use list din var command to obtain the list of supported index values and corresponding actions Table B 10 Analog Voltage Output Range Values Range Output Range 1 0 1 V 2 0 100 mV 3 0 10 V 4 0 5 V 0 cannot be set to this but may report Undefined C Link Protocol Commands I O Configuration B 42 Model 42i High Level Instruction Manual Thermo Fisher Scientific Send set din 1 3 high Receive set din 1 3 high ok dout channel This command reports the index number and output variable and the active state assigned to output channel The example below reports the input 4 to be assigned an index number 11 corresponding to general alarm with the active state being open Send dout 4 Receive dout 4 11 GEN ALARM open set dout channel index state This command assigns digital output channel to be assigned to the action associated with index and assigns it an active state of state open or closed Send s
53. To COOLER on Measurement Interface Board Temp Control Board Two Not Shown Servicing Photomultiplier Tube Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 13 7 Loosen four captive screws holding cooler to floor plate and remove the cooler assembly with the reaction chamber Note If only the cooler is being replaced remove the PMT and reaction chamber from the old cooler and install them on the new cooler Fasten knurled fittings on reaction chamber finger tight Make sure that the heat shrink covered tubing between the reaction chamber and the converter is light tight at the connections 8 Install new cooler by following previous steps in reverse 9 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Photomultiplier Tube Replacement Use the following procedure to replace the PMT tube Equipment Required Photomultiplier tube and PMT base Nut driver 5 16 inch Flat blade screwdriver Philips screwdriver small 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect the high voltage cable from the PMT power supply and unplug the BNC cable from the Input Board 3 Remove six external screws holding PMT cover plate and the four screws holding the PMT shroud to the panel and remove the PMT Equipment Damage Some internal components can be damaged by small amounts of stati
54. WARNING This adjustment should only be performed by an instrument service technician Operation Service Menu 3 90 Model 42i High Level Instruction Manual Thermo Fisher Scientific Press to save new input board calibration Automatic Input Calibration The Automatic Input Calibration screen is used to do a automatic calibration of the input board A D stages Note The measurement system and the PMT are both shut off inside this screen In the Main Menu choose Service gt Input Board Calibration gt Automatic Input Cal Press to leave warning screen and begin automatic calibration INPUT BOARD CALIBRATION GAIN 1 MANUAL TO CALIBRATE FREQ 4500 D A N A XXXXXX WARNING XXXXXXX THIS ACTION MAY REQUIREXX CHG GAIN RECALIBRATION OF THEXXXX SAVE VALUES ENTIRE MEASUREMENT SYSTEM RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM WARNING This adjustment should only be performed by an instrument service technician INPUT BOARD CALIBRATION INPUT BOARD CALIBRATION TO CALIBRATE IN PROGRESS D A 2047 XXXXXX WARNING XXXXXXX TARGET 0 THIS ACTION MAY REQUIREXX FREQ 0 0 RECALIBRATION OF THEXXXX ZERO 0 CNT 1 ENTIRE MEASUREMENT SYSTEM RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 91 Input Frequency Display The Frequency Display screen is used to manually adjust the input bo
55. and remove the pressure transducer assembly 5 To install the pressure transducer assembly follow previous steps in reverse 6 Calibrate the pressure transducer Refer to the Pressure Transducer Calibration procedure that follows Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Retaining Screws 2 Pressure Transducer Assembly Servicing Pressure Transducer Calibration 7 34 Model 42i High Level Instruction Manual Thermo Fisher Scientific Pressure Transducer Calibration Use the following procedure to calibrate the pressure transducer Equipment Required Vacuum pump Note An error in the zero setting of the pressure transducer does not introduce a measurable error in the output concentration reading Therefore if only a barometer is available and not a vacuum pump only adjust the span setting A rough check of the pressure accuracy can be made by obtaining the current barometric pressure from the local weather station or airport and comparing it to the pressure reading However since these pressures are usually corrected to sea level it may be necessary to correct the reading to local pressure by subtracting 0 027 mm Hg per foot of altitude Do not try to calibrate the pressure transducer unless the pressure is known accurately 1 Remove the cover 2 Disconnec
56. and to scroll through a list of choices Press to save the averaging time AVERAGING TIME CURRENTLY 30 SEC SET TO 10 SEC CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM Operation Calibration Factors Menu 3 18 Model 42i High Level Instruction Manual Thermo Fisher Scientific Calibration Factors Menu Calibration factors are used to correct the NO NO2 and NOx concentration readings that the instrument generates using its own internal calibration data The Calibration Factors menu displays the calibration factors The screens below show the calibration factors menu in single mode and dual auto range modes Normally the instrument is calibrated automatically using the commands listed in the Calibration menu described later in this chapter However the instrument can also be calibrated manually using the Calibration Factors menu To manually calibrate the instrument see NO and NOx Backgrounds NO NO2 and NOx Span Coefficients and Calibration Pressure below In the Main Menu choose Calibration Factors NO and NOx Backgrounds The NO and NOx background corrections are determined during zero calibration The NO background is the amount of signal read by the analyzer in the NO channel while sampling zero air The NOx background is the amount of signal read by the analyzer in the NOx channel while sampling zero air Although the background is expressed in terms of concentration the background si
57. and NOx concentrations using the above equations for NO OUT and NOx OUT 3 Record the NO and NOx responses 4 Plot the analyzer responses versus the respective calculated NO and NOx concentrations and draw or calculate the respective calibration curves For subsequent calibrations where linearity can be assumed these curves may be checked with a three point calibration consisting of a zero point NO and NOx concentrations of approximately 80 of the URL and an intermediate concentration 5 Adjust the GPT system to generate a NO concentration near 90 of the URL of the instrument range selected 6 Sample this NO concentration until the NO and NOx responses have stabilized then measure and record the NO concentration as NO ORIG 7 Adjust the O3 generator in the GPT system to generate sufficient O3 to produce a decrease in the NO concentration equivalent to about 80 of the URL of the NO2 range The decrease must not exceed 90 of the NO concentration determined in Steps 5 and 6 above Z 100 x URL NO scale Response Recorder NO OUT x x Calibration Calibration 4 10 Model 42i High Level Instruction Manual Thermo Fisher Scientific 8 When the analyzer responses stabilize record the resultant NO concentrations as NO REM 9 From the Main Menu choose Calibration gt Cal NO2 Coefficient The NO2 line of the Calibrate NO2 screen displays the current NO2 concentration The SPAN CONC line of the
58. below reports that the measurement mode is set to NO Send meas mode Receive meas mode no set meas mode mode mode no nox no nox This command sets the instrument to NO NOx auto mode manual NO mode or manual NOx mode The example below sets the instrument to the manual NO mode C Link Protocol Commands Hardware Configuration B 32 Model 42i High Level Instruction Manual Thermo Fisher Scientific Send set meas mode no Receive set meas mode no ok pres comp This command reports whether pressure compensation is on or off The example below shows that pressure compensation is on Send pres comp Receive pres comp on set pres comp onoff These commands turn the pressure compensation on or off The example below turns pressure compensation off Send set pres comp off Receive set pres comp off ok temp comp This command reports whether temperature compensation is on or off The example below shows the temperature compensation is off Send temp comp Receive temp comp off set temp comp onoff These commands turn the temperature compensation on or off The example below turns temperature compensation off Send set temp comp off Receive set temp comp off ok Hardware Configuration contrast This command reports the screen s level of contrast The example below shows the screen contrast is 50 according to Table B 7 Send contrast Receive contrast 5 50 set contrast level Th
59. buffers for the graphics display control signals and a high voltage power supply for the graphics display backlight I O Components External I O is driven from a generic bus that is capable of controlling the following devices Analog output voltage and current Analog input voltage Digital output TTL levels Digital input TTL levels Note The instrument has spare solenoid valve drivers and I O support for future expansion Analog Voltage Outputs The instrument provides six analog voltage outputs Each may be software configured for any one of the following ranges while maintaining a minimum resolution of 12 bits 0 100mV 0 1V 0 5V 0 10V The user can calibrate each analog output zero and span point through firmware At least 5 of full scale over and under range are also supported System Description I O Components 8 10 Model 42i High Level Instruction Manual Thermo Fisher Scientific The analog outputs may be assigned to any measurement or diagnostic channel with a user defined range in the units of the selected parameter The voltage outputs are independent of the current outputs Analog Current Outputs Optional The optional I O Expansion board includes six isolated current outputs These are software configured for any one of the following ranges while maintaining a minimum resolution of 11 bits 0 20 mA 4 20 mA The user can calibrate each an
60. by the instrument s password status In the Main Menu choose Password Set Password The Set Password screen is used to set the password to unlock the front panel The set password is shown if the instrument is unlocked and the password not set In the Main Menu choose Password gt Set Password Press to enter password and disable instrument lock PASSWORD MENU gt SET PASSWORD LOCK INSTRUMENT CHANGE PASSWORD REMOVE PASSWORD UNLOCK INSTRUMENT RANGE AVG DIAGS ALARM ENTER NEW PASSWORD ASSSSSSSSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM Operation Password Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 99 Lock Instrument The Lock Instrument screen is used to lock the instrument s front panel so users can not change any settings from the front panel The lock instrument is shown if the instrument is unlocked and the password set In the Main Menu choose Password gt Lock Instrument Press to enable instrument lock and returns to main menu Change Password The Change Password is used to change the password used to unlock the instrument s front panel The change password is shown if the instrument is unlocked In the Main Menu choose Password gt Change Password Press to change password LOCK FRONT PANEL xxxPRESSING ENTER WILLxxxx PREVENT USER FROM CHANGING xCONFIG FROM FRONT PANELxx LOCK AND R
61. commands if required Send set malloc lrec 10 Receive set malloc lrec 10 ok set copy sp to lrec set copy sp to srec set copy sp to stream These commands copy the current selections in scratch pad sp into the long record short record or streaming data list The example below copies the current list in scratch pad into the long records list Send set copy sp to lrec Receive set copy sp to lrec ok set copy lrec to sp set copy srec to sp set copy stream to sp These commands copy the current contents of the long record short record or streaming data list into the scratch pad sp These commands are useful in easy modification of current long record short record or streaming data lists The example below copies the current list of long records into the scratch pad Send set copy lrec to sp Receive set copy lrec to sp ok sp field number This command reports the variable number and name stored at index in the scratch pad list The example below shows that the field 5 in the scratch pad is set to index number 13 which is for the variable NOx concentration Send sp field 5 Receive sp field 5 13 pres C Link Protocol Commands Datalogging Thermo Fisher Scientific Model 42i High Level Instruction Manual B 23 sp field number value number 1 32 is the maximum number of fields in long and short record lists number 1 18 is for streaming data lists This command sets the scratch pad field number item num
62. commands report the NO NO2 and NOx coefficients in single range mode or the high and low range coefficients in dual or auto range mode If the mode is incorrect the instrument responds with can t wrong settings The example below reports that the NO coefficient is 1 000 Send no coef Receive no coef 1 000 set no coef value set no2 coef value set nox coef value set high no coef value set high no2 coef value set high nox coef value set low no coef value set low no2 coef value set low nox coef value These commands set the NO NO2 and NOx coefficients to user defined values to value where value is a floating point representation of the coefficient The example below sets the NO coefficient to 1 005 Send set no coef 1 005 Receive set no coef 1 005 ok no gas no2 gas nox gas high no gas high no2 gas high nox gas low no gas low no2 gas low nox gas These commands report the low NO NO2 and NOx span gas concentrations used to auto calibrate low NO NO2 and NOx coefficients The high and low commands are only available in dual and auto range C Link Protocol Commands Calibration B 26 Model 42i High Level Instruction Manual Thermo Fisher Scientific mode If the mode is incorrect the instrument responds with can t wrong settings The example below shows that the NO low span gas concentration is 240 0 ppm Send low no gas Receive low no gas 2400E 1 ppm set no gas value set no2 gas value
63. cooler temperature alarm limits in degrees C The example below sets the cooler temperature alarm maximum value to 2 0 C Send set alarm cooler temp max 2 Receive set alarm cooler temp max 2 ok alarm internal temp min alarm internal temp max These commands report the internal temperature alarm minimum and maximum value current settings The example below reports that the internal temperature alarm minimum value is 15 0 C Send internal temp alarm min Receive internal temp alarm min 15 0 deg C set internal temp alarm min value set internal temp alarm max value These commands set the internal temperature alarm minimum and maximum values to value where value is a floating point number representing internal temperature alarm limits in degrees C The example below sets the internal temperature alarm maximum value to 35 0 C Send set internal temp alarm max 35 Receive set internal temp alarm max 35 ok alarm pressure min alarm pressure max These commands report the pressure alarm minimum and maximum value current settings The example below reports that the pressure alarm minimum value is 20 mmHg C Link Protocol Commands Alarms Thermo Fisher Scientific Model 42i High Level Instruction Manual B 15 Send pressure alarm min Receive pressure alarm min 20 mm Hg set alarm pressure min value set alarm pressure max value These commands set the pressure alarm minimum and maximum values to value where value is a
64. displays the current chamber temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 47 to 51 C If the chamber temperature reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu In the Main Menu choose Alarms gt Chamber Temp Min and Max Chamber Temperature Limits The Minimum Chamber Temperature alarm limit screen is used to change the minimum chamber temperature alarm limit The minimum and maximum internal temperature screens function the same way In the Main Menu choose Alarms gt Chamber Temp gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value CHAMBER TEMPERATURE ACTUAL 49 0 oC gt MIN 47 0 oC MAX 51 0 oC RANGE AVG DIAGS ALARM CHAMBER TEMPERATURE ACTUAL MIN 47 0 oC SET MIN TO 48 0 oC INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Alarms Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 75 Cooler Temperature The Cooler Temperature screen displays the current cooler temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 25 to 1 C If the cooler temperature reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu In th
65. example below reports that the current PMT voltage is 750 volts Send pmt voltage Receive pmt voltage 750 pres This command reports the current reaction chamber pressure The example below shows that the actual reaction chamber pressure is 33 8 mmHg Send pres Receive pres 33 8 mm Hg react temp This command reports the current reaction chamber temperature The example below reports that the current reaction chamber temperature is 49 0 C Send react temp Receive react temp 49 0 deg C flags This reports 8 hexadecimal digits or flags that represent status of the ozonator PMT pressure and temperature compensation status gas units gas mode and alarms To decode the flags each hexadecimal digit is converted to binary as shown in the Figure B 1 It is the binary digits that define the status of each parameter In the example below the instrument is reporting that the ozonator and PMT are both on that the instrument is in the span gas mode that at least one of the alarm temperature is activated and that the NO2 high concentration alarm is activated Send flags Receive flags C0028008 C Link Protocol Commands Alarms B 12 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure B 1 Flag Status Alarms alarm chamber temp min alarm chamber temp max These commands report the chamber temperature alarm minimum and maximum value current settings The example below reports that the chambe
66. feet and front panel side trim ears EIA rack Mounted in an EIA style rack includes mounting slides and front panel EIA rack mounting ears Retrofit rack Mounted in a Thermo non EIA rack includes mounting slides and retrofit front panel rack mounting ears Optional Equipment Mounting Options 9 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 9 4 Bench Mounting Optional Equipment Mounting Options Thermo Fisher Scientific Model 42i High Level Instruction Manual 9 7 Figure 9 5 EIA Rack Mounting Optional Equipment Mounting Options 9 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 9 6 Retrofit Rack Mounting Thermo Fisher Scientific 42i High Level Instruction Manual A 1 Appendix A Warranty Seller warrants that the Products will operate or perform substantially in conformance with Seller s published specifications and be free from defects in material and workmanship when subjected to normal proper and intended usage by properly trained personnel for the period of time set forth in the product documentation published specifications or package inserts If a period of time is not specified in Seller s product documentation published specifications or package inserts the warranty period shall be one 1 year from the date of shipment to Buyer for equipment and ninety 90 days for all other products the Warranty Period Seller agrees during the Warra
67. floating point number representing pressure alarm limits in millimeters of mercury The example below sets the pressure alarm maximum value to 90 mmHg Send set alarm pressure max 90 Receive set alarm pressure max 90 ok alarm sample flow min alarm sample flow max These commands report the sample or bypass if installed flow alarm minimum and maximum value current settings The example below reports that the sample flow alarm minimum value is 0 300 LPM Send alarm sample flow min Receive alarm sample flow min 0 3 l min set alarm sample flow min value set alarm sample flow max value These commands set the sample or bypass if installed flow alarm minimum and maximum values to value where value is a floating point number representing sample flow alarm limits in liters per minute The example below sets the sample flow alarm maximum value to 1 000 LPM Send set alarm sample flow max 1 Receive set alarm sample flow max 1 ok alarm trig conc no alarm trig conc no2 alarm trig conc nox These commands report the NO NO2 and NOx concentrations alarm trigger action for minimum alarm current setting to either floor or ceiling The example below shows the NO concentration minimum alarm trigger to ceiling according to Table B 3 Send alarm trig conc no Receive alarm trig conc no 1 set alarm trig conc no value set alarm trig conc no2 value set alarm trig conc nox value C Link Protocol Commands Diagnostics B 16 M
68. item accept set save a change and or toggle on off functions Operation Software Overview 3 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific Soft Keys The Soft Keys are multi functional keys that use part of the display to identify their function at any moment The function of the soft keys allow immediate access to the menu structure and most often used menus and screens They are located directly underneath the display and as the keys functions change this is indicated by user defined labels in the lower part of the display so that the user knows what the keys are to be used for To change a soft key place the menu cursor gt on the item of the selected menu or screen you wish to set Press followed by the selected soft key within 1 second of pressing the right arrow key The edit soft key prompt will be displayed for configuration for the new label Note Not all menu items may be assigned to soft keys If a particular menu or screen item cannot be assigned the key assignment screen will not come up upon entering right arrow soft key combinations All items under the Service menu including the menu itself cannot be assigned soft keys Software Overview The Model 42i High Level utilizes the menu driven software illustrated by the flowchart in Figure 3 3 The Power Up screen shown at the top of the flowchart is displayed each time the instrument is turned on This screen is displayed while the instrume
69. last line in the BMP sc screen This command is meant for backward compatibility on the C series Screen information is reported using the iScreen command above Send screen Receive screen This is an I series Instrument Screen Information not available Void unpackDisplay void far tdib unsigned char far rlescreen int i j k unsigned char far sc4bpp sc2bpp screen ptr ptr screen unsigned char far malloc 19200 RLE decode the screen for i 0 i lt 19200 amp amp ptr screen lt 19200 i ptr rlescreen i if rlescreen i 0 unsigned char rlecount unsigned char rlescreen i while rlecount ptr 0 rlecount else if rlescreen i 0xff unsigned char rlecount unsigned char rlescreen i while rlecount ptr 0xff rlecount C Link Protocol Commands Measurement Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 29 Measurement Configuration range no range no2 range nox high range no high range no2 high range nox low range no low range no2 low range nox These commands report the NO NO2 and NOx ranges in single range mode or the high and low ranges in dual or auto range mode according to Table B 6 If the mode is incorrect the instrument responds with can t wrong settings The example below reports that the NO range is 20 ppm Send range n
70. marking used on the instrument and in the associated documentation Where to Get Help Service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com aqi 1 866 282 0430 Toll Free 1 508 520 0430 International Symbol Description Marking of electrical and electronic equipment which applies to electrical and electronic equipment falling under the Directive 2002 96 EC WEEE and the equipment that has been put on the market after 13 August 2005 Thermo Fisher Scientific 42i High Level Instruction Manual 1 1 Chapter 1 Introduction The Model 42i High Level Chemiluminescence NO NO2 NOx Analyzer combines proven detection technology easy to use menu driven software and advanced diagnostics to offer unsurpassed flexibility and reliability The Model 42i High Level has the following features 320 x 240 graphics display Menu driven software Field programmable ranges User selectable single dual auto range modes Multiple user defined analog outputs Analog input options High sensitivity Fast response time Linearity through all ranges Independent NO NO2 NOx ranges Replaceable NO2 converter cartridge User selectable digital input output capabilities Standard communications features include RS232 485 and Ethernet C Link MOD
71. off B 32 program no Reports analyzer program number B 39 push Simulates pressing a key on the front panel B 27 range mode Reports sets current range mode B 30 range no Reports sets current NO range B 29 range no2 Reports sets current NO2 range B 29 range nox Reports sets current NOx range B 29 react temp Reports current reaction chamber temperature B 11 relay stat Reports sets relay logic status to for the designated relay s B 43 ri right Simulates pressing right pushbutton B 27 ru run Simulates pressing run pushbutton B 27 sample Sets zero span valves to sample mode B 31 save Stores parameters in FLASH B 35 save params Stores parameters in FLASH B 35 sc screen C series legacy command that reports a generic response Use iscreen instead B 28 sp field Reports sets item number and name in scratch pad list B 22 span Sets zero span valves to span mode B 31 sr Reports last short record stored B 18 srec Reports maximum number of short records B 18 srec format Reports sets output format for short records ASCII or binary B 20 srec layout Reports current layout of short record data B 20 srec mem size Reports maximum number of short records B 21 srec per Reports sets short record logging period B 21 stream per Reports sets current set time interval for streaming data B 23 stream time Reports sets a time stamp to streaming data or not B 23 temp comp Re
72. optional alarm information indicated by a commercial at sign with a source indicator and a starting bit indicator All alarm information is presumed to be two bits long low and high The bitfield extraction is performed on the integer part of the source Typical alarm information would appear as 6 4 C Link Protocol Commands Record Layout Definition Thermo Fisher Scientific Model 42i High Level Instruction Manual B 47 Translation Table Then there appears an optional translation table within braces This is a string of words separated by spaces An example translation table would be Code_0 Code_1 Code_2 Code_3 The value once extracted is used as a zero based index into the translation table to determine the string to display Selection Table Then there appears an optional selection table within parentheses This is a string of numbers separated by spaces 0 1 The selection table lists the translation table entries which the user may select from when setting the parameter This is not necessarily the same as the entries which may be displayed Button Designator Then there appears an optional button designator This will be one of B I L T or N B Indicates a button which pops up an input dialog prompting the user for a new value using the designated input format The input format is specified from the B through the subsequent semicolon I Indicates a button which pops up a selection li
73. previous steps in reverse Figure 7 18 Replacing the I O Expansion Board Optional Figure 7 19 Rear Panel Board Connectors Digital Output Board Replacement Use the following procedure to replace the digital output board Figure 7 18 I O Expansion Board Opt Digital Output Board Motherboard Mounting Studs Motherboard Support Bracket Motherboard Digital Output Board I O Expansion Board Servicing Motherboard Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 41 Equipment Required Digital output board Nut driver 3 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the I O expansion board optional if used See the I O Expansion Board Replacement procedure in this chapter 3 Disconnect the digital output board ribbon cable from the motherboard 4 Using the nut driver remove the standoffs securing the board to the rear panel Figure 7 19 5 Pop off the digital output board from the mounting studs and remove the board 6 To install the digital output board follow previous steps in reverse Motherboard Replacement Use the following procedure to replace the motherboard Figure 7 18 Equipment Required Motherboard Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any i
74. range mode High or Low is displayed to indicate the calibration of the high or low coefficient The example below shows the coefficient screen in single mode Note The concentration value will show ERROR if the measured concentration is not a valid span value either higher than the selected range or 0 or lower In the Main Menu choose Calibration Factors gt NO NO2 or NOx Coef Use and to increment or decrement the coefficient value NO BACKGROUND NO 0 44 SET BKG TO 0 0 INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Calibration Factors Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 21 Press to save the new coefficient Calibration Pressure The Calibration Pressure screen reports the reactor pressure at which current calibration was performed The screen also allows this value to be edited by the operator This value should not be changed unless a complete manual calibration is being performed The calibration pressure is set equal to the reactor pressure at the time of calibration Note Turning the pressure compensation on and off can produce significant artificial jumps in the apparent sample concentration If the pressure compensation feature is to be used the instrument must be calibrated with the pressure compensation feature on For more information about calibration see Chapter 4 Calibration In the Main Menu choose Calibration F
75. safety precaution the microprocessor can override the user specified ozonator setting This occurs only if the ozonator flow doesn t indicate any flow or if the NO2 converter temperature is below the minimum alarm limit In this case an alarm is activated and the ozonator is turned off This is done to prevent the ozonator from overheating which will result in permanent damage to the ozonator or if the converter temperature drops below the minimum limit which reduces the effectiveness of the ozone destruct It is possible however to defeat this feature by setting the ozonator safety OFF in the Service Menu Note The ozonator must be ON to obtain NO NO2 and NOx readings As an additional safety precaution a lit LED mounted on the measurement interface board indicates that the ozonator is on In the Main Menu choose Instrument Controls gt Ozonator Press to toggle and set the ozonator on or off INSTRUMENT CONTROLS gt OZONATOR PMT SUPPLY AUTO MANUAL MODE DATALOGGING SETTINGS COMMUNICATION SETTINGS I O CONFIGURATION TEMPERATURE COMPENSATION RANGE AVG DIAGS ALARM PRESSURE COMPENSATION SCREEN CONTRAST SERVICE MODE DATE TIME Operation Instrument Controls Menu 3 30 Model 42i High Level Instruction Manual Thermo Fisher Scientific PMT Supply The PMT Supply screen is used to turn the PMT power supply on or off This is useful in a troubleshooting situation In the Main Menu c
76. see if line voltage is within specifications Molybdenum consumed Replace Molybdenum converter cartridge Table 6 2 Troubleshooting Alarm Messages Alarm Message Possible Cause Action Alarm Cooler Temp High Check fan operation Replace defective fan Check fan filter Clean or replace foam filter Cooler reads 80 C Bad unit Replace cooler Cooler does not hold set point of 3 C Replace cooler thermoelectric module inside cooler failed Table 6 1 Troubleshooting General Guide continued Malfunction Possible Cause Action Troubleshooting Troubleshooting Guides 6 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific Cooler reads 20 C Replace cooler thermocouple bad Alarm Internal Temp Check fan operation Replace fan if not operating properly Check fan filter Clean or replace foam filter refer to Preventive Maintenance chapter in this manual Alarm Chamber Temp Chamber temperature below set point of 50 C Check 10K thermistor replace if bad Check temperature control board to insure the LEDs are coming on If not temperature control board could be defective Alarm Conv Temp Converter temperature low Molybdenum converter should be hot to the touch if not the heater may have failed Check that converter temp set point is approximately 325 C Check that voltage to the heater is 115 VAC Alarm Pressure High pressure indication
77. select a reaction chamber having a different VRC and re compute FD and FO Adjusting Instrument Gain Use the following procedure to adjust the instrument gain Note The NO channel should be calibrated first and then calibrate the NOx channel For detailed information about the menu parameters and the icons used in these procedures see the Operation chapter 1 Determine the GPT flow conditions required to meet the dynamic parameter specifications as indicated in Dynamic Parameter Specifications for Gas Phase Titrator earlier in this chapter 2 Adjust the GPT diluent air and O3 generator air flows to obtain the flows determined in Dynamic Parameter Specifications for Gas Phase Titrator earlier in this chapter The total GPT airflow must exceed the total demand of the analyzer The Model 42i High Level requires approximately 700 cc min of sample flow and a total GPT airflow of at least 1 5 liters min is recommended a Allow the analyzer to sample zero air until the NO NOx and NO2 responses stabilize b After the responses have stabilized from the Main Menu choose Calibration gt Cal NO Background c Press to set the NO reading to zero F F V t NO O RC R F F F F NO O T D Calibration Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 7 d Press to return to the Calibration menu and repeat this procedure to set the NOx background to ze
78. should this grounding system be defeated CAUTION If the LCD panel breaks do not to let the liquid crystal contact your skin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soap and water Avoid contact with converter heated components Allow converter to cool to room temperature before handling converter components Equipment Damage Do not attempt to lift the instrument by the cover or other external fittings Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Handle all printed circuit boards by the edges only Do not point the photomultiplier tube at a light source This can permanently damage the tube Do not remove the panel or frame from the LCD module The LCD module polarizing plate is very fragile handle it carefully Do not wipe the LCD module polarizing plate with a dry cloth it may easily scratch the plate Do not use alcohol acetone MEK or other Ketone based or aromatic solvents to clean the module use a soft cloth moistened with a naphtha cleaning solvent Do not place the LCD module near organic solvents or corrosive gases Do not shake or jolt the LCD module Preface Where to Get Help Thermo Fisher Scientific Model 42i High Level Instruction Manual xviii WEEE Symbol The following symbol and description identify the WEEE
79. the URL of the low NO2 range The decrease must not exceed 90 of the low NO concentration determined in the Calibrate Low NOx procedure 2 From the Main Menu choose Calibration gt Cal Lo NO2 Coefficient The Lo NO2 field displays the current NO2 concentration The Lo Span Conc field is where you enter the Lo NO2 calibration gas concentration 3 Set the low NO2 calibration gas concentration to reflect the sum of the NO2 concentration generated by GPT and any NO2 impurity Use to move the cursor left and right and use to increment and decrement the numeric character at the cursor 4 Press to calculate and save the new low NO2 coefficient based on the entered span concentration Calibrate High NO Use the following procedure to calibrate the NO channel to the NO calibration gas 1 Connect a source of high NO calibration gas of about 80 of the high NO full scale range Allow the analyzer to sample the high NO calibration gas until the NO NO2 and NOx readings have stabilized Calibration Calibration in Dual Range and Auto Range Mode Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 15 2 After the responses have stabilized from the Main Menu choose Calibration gt Cal Hi NO Coefficient The Hi NO field displays the current NO concentration The Hi Span Conc field is where you enter the high NO calibration gas concentration Use to move the cursor left and right and use to increment and dec
80. the input and output communication functions and components Hardware Hardware components Figure 8 1 include NO2 to NO converter Mode solenoid Reaction chamber Optical filter Pressure transducer Ozonator Ozone flow switch Photomultiplier tube Photomultiplier tube cooler Pump System Description NO2 to NO Converter 8 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific Sample capillary Dry air capillary Figure 8 1 Hardware Components NO2 to NO Converter The NO2 to NO converter heats stainless steel to 625 C in order to convert and detect NO2 The converter consists of an insulated housing heater replaceable cartridge and a type K thermocouple sensor Mode Solenoid The mode solenoid valve switches analyzer operation between the NO mode and NOx mode It routes the ambient air sample either through the reaction chamber NO mode or through the NO2 to NO converter and then to the reaction chamber NOx mode Reaction Chamber The reaction chamber is where the sample reacts with ozone and produces excited NO2 that gives off a photon of energy when it decays Power Supply HVPS Thermistor PMT Assembly Reaction Chamber I O Expansion Digital Output Board Motherboard Converter Solenoid Flow Switch Ozonator Ozonator Transformer Pressure Transducer Input Board Board Optional Measurement
81. the liquid crystal contacts your skin or clothes wash it off immediately using soap and water Operation Pushbuttons Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 3 Pushbuttons The Pushbuttons allow the user to traverse the various screens menus Figure 3 2 Front Panel Pushbuttons Table 3 1 Front Panel Pushbuttons Soft Keys The soft keys are used to provide shortcuts that allow the user to jump to user selectable menu screens For more information on processing soft keys see Soft Keys below Run The is used to display the Run screen The Run screen normally displays the NO NO2 and NOx concentrations Menu The is used to display the Main Menu when in the Run screen or back up one level in the menu system For more information about the Main Menu see Main Menu later in this chapter Help The is context sensitive that is it provides additional information about the screen that is being displayed Press for a brief explanation about the current screen or menu Help messages are displayed using lower case letters to easily distinguish them from the operating screens To exit a help screen press or to return to the previous screen or to return to the Run screen Up Down Left Right The four arrow pushbuttons and move the cursor up down left and right or change values and states in specific screens Enter The is used to select a menu
82. the zero calibration In the Main Menu choose Service gt Flow Calibration gt Zero Press to save the current flow reading as the zero reading Calibrate Flow Span The Calibrate Flow Span screen allows the user to view and set the flow sensor calibrate span point WARNING This adjustment should only be performed by an instrument service technician FLOW SENSOR CAL gt ZERO 200 SPAN 1 0000 SET DEFAULTS RANGE AVG DIAGS ALARM CALIBRATE FLOW ZERO CURRENTLY 0 004 LPM SET TO 0 000 LPM DISCONNECT PUMP AND SAVE ZERO PRESSURE RANGE AVG DIAGS ALARM Operation Service Menu 3 88 Model 42i High Level Instruction Manual Thermo Fisher Scientific Note An independent flow sensor is required to read the flow then the operator enters the flow value on this screen to perform the calibration In the Main Menu choose Service gt Flow Calibration gt Span Use and to move and change the value Press to save set to value as actual value Restore Default Flow Calibration The Restore Default Flow Calibration screen allows the user to reset the flow calibration configuration values to factory defaults In the Main Menu choose Service gt Flow Calibration gt Set Defaults Press to warn user and enable restore with Use to overwrite pressure sensor calibration parameters with factory default values when pressed after CALIBRATE FLOW SPAN CURRENTLY 1 000 LPM
83. third party supplier to the extent such assignment is allowed by such original manufacturer or third party supplier In no event shall Seller have any obligation to make repairs replacements or corrections required in whole or in part as the result of i normal wear and tear ii accident disaster or event of force majeure iii misuse fault or negligence of or by Buyer iv use of the Products in a manner for which they were not designed v causes external to the Products such as but not Warranty A 2 42i High Level Instruction Manual Thermo Fisher Scientific limited to power failure or electrical power surges vi improper storage and handling of the Products or vii use of the Products in combination with equipment or software not supplied by Seller If Seller determines that Products for which Buyer has requested warranty services are not covered by the warranty hereunder Buyer shall pay or reimburse Seller for all costs of investigating and responding to such request at Seller s then prevailing time and materials rates If Seller provides repair services or replacement parts that are not covered by the warranty provided in this warranty Buyer shall pay Seller therefor at Seller s then prevailing time and materials rates ANY INSTALLATION MAINTENANCE REPAIR SERVICE RELOCATION OR ALTERATION TO OR OF OR OTHER TAMPERING WITH THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY OTHER THAN SELLER WITHOUT SELLER S PRIOR WRITTEN
84. using set sp field index The example below reports the list of analog output index numbers and variables Send list var aout Receive list var aout index variable 0 none 1 no 2 no2 3 nox 18 intt 19 rctt 20 pmtt 21 convt 25 pres 26 smplf 27 pmtv 28 ain1 29 ain2 30 ain3 31 ain4 32 ain5 33 ain6 34 ain7 35 ain8 relay stat This command reports the current relay logic normally open or normally closed if all the relays are set to same state that is all open or all closed The example below shows that the status when all the relays logic is set to normally open Send relay stat Receive relay stat open 10 Current Output Not Assigned Low NO Range Status 11 Current Output Not Assigned Low NO2 Not Assigned 12 Current Output Not Assigned Low NOx Not Assigned Table B 11 Default Output Assignment continued D to A Function Single Range Dual Range Autorange C Link Protocol Commands Record Layout Definition B 44 Model 42i High Level Instruction Manual Thermo Fisher Scientific Note if individual relays have been assigned different logic then the response would be a 4 digit hexadecimal string with the least significant byte LSB being relay no 1 For example Receive relay stat 0x0001 indicates relay no 1 is set to normally open logic all others are normally closed Receive relay stat 0x0005 indicates relay no 1 and 3 are set to be normally open logic all oth
85. 0 SET TO 100 0 CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM Operation Range Menu 3 16 Model 42i High Level Instruction Manual Thermo Fisher Scientific Set Custom Ranges The Set Custom Ranges menu lists three custom ranges C1 C2 and C3 Custom ranges are user defined ranges In the ppm mode any value between 10 and 5 000 ppm can be specified as a range In the mg m3 mode any value between 20 and 7 500 mg m3 can be specified as a range In the Main Menu choose Range gt Set Custom Ranges Custom Ranges The Custom Ranges screen is used to define the custom ranges The display shows the current custom range The next line of the display is used to set the range To use the custom full scale range be sure to select it Custom range 1 2 or 3 in the NO NO2 or NOx Range screen For more information about selecting ranges see NO NO2 and NOx Ranges above In the Main Menu choose Range gt Set Custom Ranges gt Custom range 1 2 or 3 Use and to increment or decrement the numeric value Press to save the new range CUSTOM RANGES gt CUSTOM RANGE 1 55 6 CUSTOM RANGE 2 75 0 CUSTOM RANGE 3 125 0 RANGE AVG DIAGS ALARM CUSTOM RANGE 1 CURRENTLY 55 6 SET TO 000055 7 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Averaging Time Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 17 Averaging Time The averaging time defines
86. 1 MSB LSB Operating status Service Mode On 0 0 0 0 0 0 0 1 Maintenance Local 0 0 0 0 0 0 1 0 Zero gas On 0 0 0 0 0 1 0 0 Span gas On 0 0 0 0 1 0 0 0 Gas Unit Indication ppm OR ppb 0 0 0 1 0 0 0 0 Ozonator Off 0 0 1 0 0 0 0 0 PMT Off 0 1 0 0 0 0 0 0 Not used 1 0 0 0 0 0 0 0 Table D 2 Error Status for Model 42i High Level D7 D6 D5 D4 D3 D2 D1 D0 Bit 8 7 6 5 4 3 2 1 Hex value 80 40 20 10 08 04 02 01 MSB LSB Error status Not Used 0 0 0 0 0 0 0 1 Not Used 0 0 0 0 0 0 1 0 Not Used 0 0 0 0 0 1 0 0 Any Temperature Alarm 0 0 0 0 1 0 0 0 Pressure Alarm 0 0 0 1 0 0 0 0 Sample Flow Alarm 0 0 1 0 0 0 0 0 Ozonator Flow Alarm 0 1 0 0 0 0 0 0 Not used 1 0 0 0 0 0 0 0 Operating and Error Status
87. 1 Byte 0x05 Output Address 2 Bytes 0x0000 to maximum allowed by instrument Output Value 2 Bytes 0x0000 or 0xFF00 Response Function code 1 Byte 0x05 Output Address 2 Bytes 0x0000 to maximum allowed by instrument Output Value 2 Bytes 0x0000 or 0xFF00 Error Response Function code 1 Byte Function code 0x80 Exception code 1 Byte 01 Illegal Function 02 Illegal Address 03 Illegal Data 04 Slave Device Failure Request Field Name Hex Function 05 Output Address Hi 00 Output Address Lo 05 Output Value Hi FF Output Value Lo 00 MODBUS Protocol MODBUS Commands Supported C 8 42i High Level Instruction Manual Thermo Fisher Scientific MODBUS Commands Supported Table C 1 through Table C 3 list the MODBUS commands supported for the Model 42i High Level Response Field Name Hex Function 05 Output Address Hi 00 Output Address Lo 05 Output Value Hi FF Output Value Lo 00 Table C 1 Read Coils for 42i High Level Coil Number Status 1 AUTORANGE NOx 2 LOCAL REMOTE 3 SERVICE 4 UNITS 5 ZERO MODE 6 SPAN MODE 7 NO MODE 8 NOx MODE 9 NOT USED 10 NOT USED 11 GEN ALARM 12 NO CONC MAX ALARM 13 NO CONC MIN ALARM 14 NO2 CONC MAX ALARM 15 NO2 CONC MIN ALARM 16 NOx CONC MAX ALARM 17 NOx CONC MIN ALARM 18 INT TEMP ALARM 19 CHAMB TEMP ALARM 20 COOLER TEMP ALARM 21 NO2 CONVERTER TEMP ALARM 22 NOT USED
88. 2 1 Relay 1 Contact a 2 Relay 2 Contact a 3 Relay 3 Contact a 4 Relay 4 Contact a 5 Relay 5 Contact a 6 Relay 6 Contact a 7 Relay 7 Contact a 8 Relay 8 Contact a 9 Relay 9 Contact a 10 Relay 10 Contact a 11 NC 12 Solenoid Drive Output 1 13 Solenoid Drive Output 2 14 Solenoid Drive Output 3 Table 6 6 I O Expansion Board Optional Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Description Troubleshooting Connector Pin Descriptions 6 20 Model 42i High Level Instruction Manual Thermo Fisher Scientific 15 Solenoid Drive Output 4 16 Solenoid Drive Output 5 17 Solenoid Drive Output 6 18 Solenoid Drive Output 7 19 Solenoid Drive Output 8 20 Relay 1 Contact b 21 Relay 2 Contact b 22 Relay 3 Contact b 23 Relay 4 Contact b 24 Relay 5 Contact b 25 Relay 6 Contact b 26 Relay 7 Contact b 27 Relay 8 Contact b 28 Relay 9 Contact b 29 Relay 10 Contact b 30 24V 31 24V 32 24V 33 24V 34 24V 35 24V 36 24V 37 24V Table 6 8 Input Board Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description PMT IN J1 1 PMT Input 2 Ground INTF BD J2 1 15V 2 Ground 3 15V Table 6 7 Digital Output Board Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Description Troubleshoo
89. 28 V ANALOG IN 3 0 00 V ANALOG IN 4 0 00 V ANALOG IN 5 0 00 V ANALOG IN 6 0 00 V ANALOG IN 7 0 00 V RANGE AVG DIAGS ALARM Operation Diagnostics Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 69 Digital Inputs The Digital Inputs screen read only displays the state of the 16 digital inputs In the Main Menu choose Diagnostics gt Digital Inputs Relay States The Relay States screen displays the state of the 10 digital outputs and allows toggling of the state to either on 1 or off 0 The relays are restored to their original states upon exiting this screen In the Main Menu choose Diagnostics gt Relay States Test Analog Outputs The Test Analog Outputs menu contains a number of digital to analog converter DAC calibration items Channel choices include all analog outputs 6 voltage channels and 6 current channels if the I O expansion board option is installed In the Main Menu choose Diagnostics gt Test Analog Outputs DIGITAL INPUTS gt INPUT 1 1 INPUT 2 1 INPUT 3 1 INPUT 4 1 INPUT 5 1 INPUT 6 1 INPUT 7 1 RANGE AVG DIAGS ALARM RELAY STATE gt OUTPUT 1 0 OUTPUT 2 0 OUTPUT 3 0 OUTPUT 4 1 OUTPUT 5 0 OUTPUT 6 0 OUTPUT 7 0 RANGE AVG DIAGS ALARM Operation Diagnostics Menu 3 70 Model 42i High Level Instruction Manual Thermo Fisher Scientific Set Analog Outputs The Set Analog Outputs screen contains three choices Set to full scale set to zero
90. 42i High Level Instruction Manual 7 21 5 Loosen the four captive screws holding converter housing to floor plate Figure 7 10 NO2 to NO Stainless Steel Converter Assembly 6 Remove the six screws holding the top housing assembly to the bottom half 7 Remove the converter cartridge heater assembly from the bottom housing assembly 8 Loosen the heater clamp pry heater apart no wider than necessary and remove the converter cartridge noting the proper orientation of heater wires and thermocouple probe 9 To replace converter follow previous steps in reverse Be sure to wrap the O3 converter tube snugly around the heater Stainless Steel O3 Converter Bottom Housing Top Housing Assembly Heater Assembly Captive Screws 4 Thermocouple Leads and Heater Connector Converter Assembly Assembly Servicing Solenoid Valve Replacement 7 22 Model 42i High Level Instruction Manual Thermo Fisher Scientific Solenoid Valve Replacement Use the following procedure to replace the solenoid valve Figure 7 11 Equipment Required Solenoid valve Wrench 5 16 inch Philips screwdriver 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Disconnect solenoid from the Measurement Interface board NO NOX connector Note electrical connections to facilitate re connection 3 Remove plumbing from sole
91. ALOG IN 4 40063 amp 40064 ANALOG IN 5 40065 amp 40066 ANALOG IN 6 40067 amp 40068 ANALOG IN 7 40069 amp 40070 ANALOG IN 8 Table C 3 Write Coils for 42i High Level Coil Number Action Triggered 101 ZERO MODE 102 SPAN MODE 103 NO MODE 104 NOx MODE 105 NOT USED 106 NOT USED 107 SET BACKGROUND 108 CAL TO LO SPAN 109 AOUTS TO ZERO 110 AOUTS TO FS 111 CAL TO HI SPAN Table C 2 Read Registers for 42i High Level continued Register Number Variable Thermo Fisher Scientific Model 42i High Level Instruction Manual D 1 Appendix D Geysitech Bayern Hessen Protocol This appendix provides a description of the Geysitech Bayern Hessen or BH Protocol Interface and is supported both over RS 232 485 as well as TCP IP over Ethernet The Geysitech Commands that are implemented are explained in detail in this document The Geysitech protocol support for the iSeries enables the user to perform the functions of reading the various concentrations and to trigger the instrument to be in sample zero span mode if valid for that instrument This is achieved by using the supported Geysitech commands listed below For details of the Model 42i High Level Geysitech Protocol specification see the following topics Serial Communication Parameters on page D 1 TCP Communication Parameters on page D 2 Instrument Address on page D 2 Abbreviations Used on page D
92. ALUE CHOOSE SIGNAL TO OUTPUT RANGE AVG DIAGS ALARM SELECT OUTPUT RANGE SELECTED OUTPUT V ALL CURRENTLY 0 10V SET TO 0 5V CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 55 Minimum and Maximum Value The MinimumValue screen is used to edit the zero 0 to full scale 100 value in percentages for the selected analog output channel See Table 3 6 for a list of choices The minimum and maximum output value screens function the same way The example below shows the set minimum value screen In the Main Menu choose Instrument Controls gt IO Configuration gt Analog Output Config gt Select Channel gt Set Minimum or Maximum Value Use and to increment or decrement the numeric value Press to validate and save the new minimum value Table 3 6 Analog Output Zero to Full Scale Table Output Zero Value Full Scale 100 Value NO Zero 0 Range Setting NO2 Zero 0 Range Setting NOx Zero 0 Range Setting LO NO Zero 0 Range Setting LO NO2 Zero 0 Range Setting LO NOx Zero 0 Range Setting HI NO Zero 0 Range Setting HI NO2 Zero 0 Range Setting HI NOx Zero 0 Range Setting Range NOx Recommend not to change the setting for this output Internal Temp User set alarm min value User set alarm max value Chamber Temp User set alarm min value User set alarm m
93. ANGE AVG DIAGS ALARM Operation Alarms Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 79 displayed indicating that the flow is acceptable Inadequate ozonator flow will cause the ozonator to overheat resulting in permanent damage to the ozonator In the Main Menu choose Alarms gt Ozonator Flow Zero and Span Check The Zero Span Check screen allows the user to view the status of the most recent zero check and set the maximum zero check offset The zero and span check screens are displayed if the zero span check option is enabled and function the same way In the Main Menu choose Alarms gt Zero or Span Check Max Zero and Span Offset The Max Zero Check Offset screen is used to change the maximum zero check offset The maximum zero and span offset screens function the same way In the Main Menu choose Alarms gt Zero or Span Check gt Max Offset Use and to increment or decrement the numeric value Press to save set to value as actual value OZONATOR FLOW ACTUAL gt 0 050 LPM RANGE AVG DIAGS ALARM ZERO CHECK ALARM OK RESPONSE 0 00 gt MAX OFFSET 10 00 RANGE AVG DIAGS ALARM Operation Alarms Menu 3 80 Model 42i High Level Instruction Manual Thermo Fisher Scientific Zero and Span Auto Calibration The Zero Auto Calibration screen read only allow the user to view the status of the most recent auto background calibration The zero and span au
94. APPROVAL OR ANY USE OF REPLACEMENT PARTS NOT SUPPLIED BY SELLER SHALL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS THE OBLIGATIONS CREATED BY THIS WARRANTY STATEMENT TO REPAIR OR REPLACE A DEFECTIVE PRODUCT SHALL BE THE SOLE REMEDY OF BUYER IN THE EVENT OF A DEFECTIVE PRODUCT EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT SELLER DISCLAIMS ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED ORAL OR WRITTEN WITH RESPECT TO THE PRODUCTS INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT Thermo Fisher Scientific Model 42i High Level Instruction Manual B 1 Appendix B C Link Protocol Commands This appendix provides a description of the C Link protocol commands that can be used to remotely control a Model 42i High Level analyzer using a host device such as a PC or a datalogger C Link protocol may be used over RS 232 RS 485 or Ethernet C Link functions can be accessed over Ethernet using TCP IP port 9880 Instrument Identification Number on page B 2 describes the C Link command format Commands on page B 2 lists all the 42i High Level C Link commands in Table B 1 Measurements on page B 9 describes and gives examples of the measurement commands Alarms on page B 12 describes and gives e
95. BUS and streaming data protocols For details of the analyzer s principle of operation and product specifications see the following topics Principle of Operation on page 1 2 describes the principles by which your analyzer operates Introduction Principle of Operation 1 2 42i High Level Instruction Manual Thermo Fisher Scientific Specifications on page 1 3 is a list of the analyzer s performance specifications Thermo Fisher Scientific is pleased to supply this chemiluminescence NO NO2 NOx analyzer We are committed to the manufacture of instruments exhibiting high standards of quality performance and workmanship Service personnel are available for assistance with any questions or problems that may arise in the use of this analyzer For more information on servicing see Chapter 7 Servicing Principle of Operation The Model 42i High Level operates on the principle that nitric oxide NO and ozone O3 react to produce a characteristic luminescence with an intensity linearly proportional to the NO concentration Infrared light emission results when electronically excited NO2 molecules decay to lower energy states Specifically Nitrogen dioxide NO2 must first be transformed into NO before it can be measured using the chemiluminescent reaction NO2 is converted to NO by a stainless steel NO2 to NO converter heated to about 625 C the optional molybdenum converter is heated to 325 C The am
96. CAL NO BACKGROUND CAL NOx BACKGROUND CAL NOx BACKGROUND CAL NO COEFFICIENT CAL HI NO COEFFICIENT CAL NO2 COEFFICIENT CAL HI NO2 COEFFICIENT CAL NOx COEFFICIENT CAL HI NOx COEFFICIENT CALIBRATE PRESSURE CAL LO NO COEFFICIENT ZERO SPAN CHECK CAL LO NO2 COEFFICIENT RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM CAL LO NOx COEFFICIENT CALIBRATE PRESSURE NO BACKGROUND NO 1 2 CURRENTLY 0 0 SET NO TO ZERO RANGE AVG DIAGS ALARM Operation Calibration Menu 3 24 Model 42i High Level Instruction Manual Thermo Fisher Scientific Calibrate NO NO2 and NOx Coefficients The Calibrate NO Coefficient screen is used to adjust the NO span concentrations while sampling span gas of known concentration All calibration screens operate the same way Therefore the following description of the NO calibration screen applies to the NO2 and NOx calibration screens as well The display shows the current NO concentration reading and the current NO range The next line of the display is where the NO calibration gas concentration is entered It is important to note the averaging time when calibrating The longer the averaging time the more precise the calibration will be For the most precise calibration use the 300 second averaging time For more information about calibration see Chapter 4 Calibration In the Main Menu choose Calibration gt Cal NO NO2 or NOx Coefficents Use and pushbuttons to move the cursor le
97. Calibration Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 5 The O3 generator ozonator airflow rate and the NO flow rate must be adjusted such that the following relationships hold Determining GPT System Flow Conditions Use the following procedure to determine the flow conditions to be used in the GPT system 1 Determine FT the total flow required at the output manifold which should be equal to the analyzer demand plus 10 to 50 percent excess 2 Establish NO OUT as the highest NO concentration that will be required at the output manifold NO OUT should be about equal to 90 of the upper range limit URL of the NO2 concentration range to be covered 3 Determine FNO as 4 Select a convenient or available reaction chamber volume Initially a trial volume may be selected in the range of 200 to 500 cc 5 Compute FO as min ppm 2 75 t x NO P R RC R F F F NO NO NO O NO STD RC min 2 lt F F V t NO O RC R NO F x NO F STD T OUT NO F 2 75 V x F x NO F NO RC NO STD O Calibration Calibration 4 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific 6 Compute tR as 7 Verify that tR lt 2 minutes If not select a reaction chamber with a smaller VRC 8 Compute the diluent air flow rate as 9 If FO turns out to be impractical for the desired system
98. Description 101346 00 Temperature Control 101355 00 Signal Input 101688 00 Ambient Temperature 101695 00 Permeator Oven 101050 00 Heater Power 101036 00 DC Power Supply 24V Output 101037 00 115VAC Supply to Interface Board 101048 00 RS 485 Data 101038 00 Power Switch to Motherboard 101364 00 DC Power Supply Status Monitor 101055 00 Main AC Receptacle Assembly 101054 00 Motherboard to Front Panel Board 101035 00 DC Power Supply AC Input 101033 00 AC from Outlet 101377 00 AC to Power Switch 102057 00 AC to External Pump 101267 00 Fan Power Cable Servicing Cable List Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 7 Figure 7 2 Component Layout Power Supply HVPS Thermistor PMT Assembly Reaction Chamber I O Expansion Digital Output Board Motherboard Converter Solenoid Flow Switch Ozonator Ozonator Transformer Pressure Transducer Input Board Board Optional Measurement Interface Board Capillaries 2 Servicing Removing the Measurement Bench and Lowering the Partition Panel 7 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific Removing the Measurement Bench and Lowering the Partition Panel The measurement bench can be removed and the partition panel can be lowered to improve access to connectors and components Refer to the following steps when a procedure requires lowering the partition panel s
99. ES FLOW RANGE AVG DIAGS ALARM PMT VOLTS ANALOG INPUTS gt NONE ANALOG IN 1 ANALOG IN 2 ANALOG IN 3 ANALOG IN 4 ANALOG IN 5 ANALOG IN 6 RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 46 Model 42i High Level Instruction Manual Thermo Fisher Scientific Press to leave the warning screen and move to next screen Use to confirm and save the new selection change TCP IP Settings The TCP IP Settings menu is used for defining TCP IP settings In the Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings Use DHCP The Use DHCP screen is used to specify whether to use DHCP or not Note The instrument power must be cycled after this parameter has been changed for the change to take effect In the Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt Use DCHP Press to toggle and set DHCP on or off RS 232 RS 485 SELECTION RS 232 RS 485 SELECTION XXXXXX WARNING XXXXXXX CURRENTLY RS 232 DISCONNECT THE SERIALX X SET TO RS 485 CABLES BEFORE CHANGING X MAKE SURE THAT THE CABLEXX THE SELECTION XXXXXX IS OFF PRESS TO CONFIRM TO CONTINUE TOGGLE VALUE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM TCP IP SETTINGS gt USE DHCP OFF IP ADDRESS 192 168 1 15 NETMASK 255 255 255 0 GATEWAY 192 168 1 1 HOST NAME ISERIES RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo F
100. ETURN TO RUN RANGE AVG DIAGS ALARM ENTER NEW PASSWORD ASSSSSSSSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM Operation Password 3 100 Model 42i High Level Instruction Manual Thermo Fisher Scientific Remove Password The Remove Password screen is used to erase the current password and disable password protection The remove password is shown if the instrument is unlocked and the password set In the Main Menu choose Password gt Remove Password Press to remove password and returns to main menu Unlock Instrument The Unlock Instrument screen is used to enter the password to unlock the front panel The Unlock Instrument is shown if the instrument is locked In the Main Menu choose Password gt Unlock Instrument Press to disable instrument lock and returns to main menu REMOVE PASSWORD xxxPRESSING ENTER WILLxxxx xREMOVE CURRENT PASSWORDxx xxxAND DISABLE LOCKINGxxxx REMOVE PASSWORD RANGE AVG DIAGS ALARM ENTER THE PASSWORD ASSSSSSSSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 1 Chapter 4 Calibration This chapter describes procedures for performing a calibration of the Model 42i High Level The information described here should be adequate to perform the calibration However if greater detail is desired due to particular application r
101. GITAL INPUT SETTINGS ANALOG OUTPUT CONFIG ANALOG INPUT CONFIG RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 50 Model 42i High Level Instruction Manual Thermo Fisher Scientific Logic State The Logic State screen is used to change the I O relay to either normally open or normally closed Press to toggle and set the logic state between open or closed Instrument State The Instrument State submenu allows the user to select the instrument state that is tied to the selected relay output A submenu lists signal types of either alarms or non alarm to choose from In the Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings gt Select Relay gt Instrument State OUTPUT RELAY SETTINGS gt 1 NOP GEN ALARM 2 NOP NONE 3 NOP UNITS 4 NOP CONC ALARM 5 NOP NONE 6 NOP NONE 7 NOP NO MODE RANGE AVG DIAGS ALARM OUTPUT RELAY SETUP gt LOGIC STATE OPEN INSTRUMENT STATE RANGE AVG DIAGS ALARM CHOOSE SIGNAL TYPE gt ALARMS NON ALARM RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 51 Alarms The Alarms status screen allows the user to select the alarm status for the selected relay output The selected item is shown by lt after it Items displayed are determined by the options installed In the Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Se
102. High Level Instruction Manual 4 11 The recorder response will be as follows Where URL Nominal upper range limit of the NO2 channel ppm 12 Record the NO2 concentration and the analyzer s NO2 response 13 Maintaining the same FNO FO and FD adjust the ozone generator to obtain several other concentrations of NO2 over the NO2 range at least five evenly spaced points across the remaining scale are suggested 14 Record the stable responses and plot the analyzer s NO2 responses versus the corresponding calculated using the above equation for NO2 OUT concentrations and draw or calculate the NO2 calibration curve Note It is important that the curve should be linear within 1 FS over the NO2 range If the curve is nonlinear the analyzer is not operating correctly possible leak or converter failure etc and should be serviced Assuming the curve is linear subsequent data should be reduced using this NO2 calibration curve response Using the Calibration Factors menu can change the calibration factors This is often useful in a troubleshooting situation However after the above calibration procedure is completed all subsequent data reduction depends on the calibration parameters remaining the same as during the initial calibration Therefore never change any calibration factor without first recording the value so that after any troubleshooting procedure is completed the initial value can be re entered thereby not alte
103. High Level Instruction Manual Thermo Fisher Scientific Send set stream time 0 Receive set stream time 0 ok Calibration set cal no coef set cal no2 coef set cal nox coef set cal high no coef set cal high no2 coef set cal high nox coef set cal low no coef set cal low no2 coef set cal low nox coef These commands will auto calibrate the NO NO2 and NOx coefficients based on the NO NO2 and NOx span gas concentrations The high and low commands are only available in dual and auto range mode If the mode is incorrect the instrument responds with can t wrong settings The example below shows a successful auto calibration of the low NO coefficient Send set cal low no coef Receive set cal low no coef ok set cal no bkg set cal nox bkg These commands will auto calibrate the NO and NOx backgrounds If the instrument is set to manual NOx mode the response to set cal no bkg will be can t wrong settings The example below shows a successful auto calibration of the NO background Send set cal no bkg Receive set cal no bkg ok Table B 5 Stream Time Values Value Stream Time 0 Attaches time stamp to streaming data string 1 Disables time stamp to streaming data string C Link Protocol Commands Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 25 no coef no2 coef nox coef high no coef high no2 coef high nox coef low no coef low no2 coef low nox coef These
104. IAGS ALARM DILUTION RATIO CURRENTLY 001 1 SET TO 002 1 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 97 Restore User Defaults The Restore User Defaults screen is used to reset the user calibration and configuration values to factory defaults The restore user defaults screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter Note When this item is selected the instrument will be automatically rebooted after restoring defaults In the Main Menu choose Service gt Restore User Defaults Press to warn and enable restore with Press to overwrite all user settings with factory default values DISPLAY PIXEL TEST DURING TEST PRESS OR XX TO EXIT TO TOGGLEXXXXXX BEGIN TEST GO BACK TO MENU RANGE AVG DIAGS ALARM RESTORE USER DEFAULTS RESTORE USER DEFAULTS RESTORE RESTORE ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM RESTORE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM Operation Password 3 98 Model 42i High Level Instruction Manual Thermo Fisher Scientific Password The Password menu allows the user to configure password protection If the instrument is locked none of the settings may be changed via the front panel user interface The items visible under the password menu are determined
105. In the Main Menu choose Alarms gt Select Concentration gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value Min Trigger The Minimum Trigger screen allows the user to view and set the NO NO2 and NOx concentration low alarm trigger type to either floor or ceiling The minimum alarm may be programmed as a floor trigger alarm is triggered when the concentration falls below the minimum value or a ceiling trigger alarm is triggered when the concentration goes above the minimum value In the Main Menu choose Alarms gt Select Concentration gt MinTrigger Press to toggle and set to floor or ceiling NO CONCENTRATION ACTUAL 62 7 gt MIN 0 MAX 5000 MIN TRIGGER CEILING RANGE AVG DIAGS ALARM NO CONCENTRATION ACTUAL MIN 0 SET MIN TO 00000001 MOVE CURSOR INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Service Menu 3 82 Model 42i High Level Instruction Manual Thermo Fisher Scientific Service Menu The Service menu appears only when the instrument is in the service mode To put the instrument into service mode In the Main Menu choose Instrument Controls gt Service Mode Press to toggle and set the service mode on Advanced diagnostic functions are included in the service mode Meaningful data should not be collected when the instrument is in the service mode In the Main Menu choose Service
106. Level Instruction Manual Thermo Fisher Scientific Figure 7 1 Properly Grounded Antistatic Wrist Strap Firmware Updates The firmware can be updated by the user in the field via the serial port or over the Ethernet This includes both the main processor firmware and the firmware in all low level processors Refer to the i Port manual for the firmware update procedure Replacement Parts List Table 7 1 lists the replacement parts for the Model 42i High Level major subassemblies Refer to Figure 7 2 to identify the component location Table 7 1 Model 42i High Level Replacement Parts Part Number Description 100480 00 Front Panel Push Button Board 101491 02 Processor Board 100533 00 Motherboard 100539 00 Digital Output Board 100542 00 I O Expansion Board Optional 100859 00 Front Panel Connector Board 100536 00 Measurement Interface Board 100856 00 Temperature Control Board 101167 00 Input Board Assembly 101076 00 Front Panel Display 9973 Ozonator Assembly 9974 Ozonator Transformer 101023 00 Pressure Transducer 101620 00 Flow Switch Ozone 9367 Photomultiplier Tube PMT Servicing Replacement Parts List Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 5 101024 00 PMT High Voltage Power Supply 9981 PMT Base Socket Assembly 101390 00 Solenoid Valve 101020 00 Cooler Assembly 102648 02 Reaction Chamber Assembly 101214 00 NO2 to NO Converter Assembl
107. MIN TRIG CEILING FLOOR ACTUAL TRIGGER CEILING SET TRIGGER TO FLOOR TOGGLE AND SAVE VALUE RANGE AVG DIAGS ALARM SERVICE gt PMT VOLTAGE ADJUSTMENT RANGE MODE SELECT CONVERTER SET TEMP PRESSURE CALIBRATION FLOW CALIBRATION INPUT BOARD CALIBRATION TEMPERATURE CALIBRATION RANGE AVG DIAGS ALARM ANALOG OUT CALIBRATION ANALOG INPUT CALIBRATION OZONATOR SAFETY DILUTION RATIO DISPLAY PIXEL TEST RESTORE USER DEFAULTS Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 83 PMT Voltage Adjustment The PMT Voltage Adjustment screen is used to manually adjust the PMT supply voltage The PMT voltage adjustment screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter In the Main Menu choose Service gt PMT Voltage Adjustment Use and to increment or decrement the PMT counts Press to save the new PMT voltage Range Mode Select The Range Mode Select screen is used to switch between the various range modes single dual and auto range The range mode select screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter In the Main Menu choose Service gt Range Mode Select Use and to scroll through a list of choices Press to save the new range mode WARNING Th
108. Model 42i High Level Instruction Manual Thermo Fisher Scientific Zero Span Ratio The Zero Span Ratio screen is used to adjust the ratio of zeros to spans For example if this value is set to 1 a span check will follow every zero check If this value is set to 3 there will be two zero checks between each zero span check This value may be set from 1 to 10 with 1 as default In the Main Menu choose Calibration gt Zero Span Check gt Zero Span Ratio Use and to increment and decrement the numeric value Press to save the ratio value ZERO SPAN AVERAGING TIME CURRENTLY 60 SEC SET TO 90 SEC CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM ZERO SPAN RATIO CURRENTLY 1 1 SET TO 2 1 CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 29 Instrument Controls Menu The Instrument Controls menu contains a number of items The software controls listed in this menu enable control of the listed instrument functions In the Main Menu choose Instrument Controls Ozonator The Ozonator screen is used to turn the internal ozonator on or off The display shows the status of the control line that turns the ozonator on or off The next line of the display shows the user specified ozonator setting Under most conditions the control line status and ozonator set status are the same However as a
109. Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Input Board Replacement Use the following procedure to replace the input board Figure 7 13 Equipment Required Input board Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Input Board Replacement 7 26 Model 42i High Level Instruction Manual Thermo Fisher Scientific Philips screwdriver 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Disconnect the BNC signal and the ribbon cable 3 Loosen the two screws holding the assembly bracket to the floor plate move the assembly towards the rear and lift the assembly off the screws 4 Loosen the two screws holding the input box to the assembly bracket and lift the input box off the screws Figure 7 13 Replacing the Input Board 5 Remove the four screws holding the input board to the input box and remove the input board 6 Install the input board by following the previous steps in reverse Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Assembly Bracket Input Bo
110. Run screen X CONCENTRATION W NO 62 7 PPM NO2 25 5 PPM NOx 88 2 PPM SAMPLE 12 34 ALARMx RANGE AVG DIAGS ALARM XXLO WCONCENTRATIONXXLO W NO 62 7 PPM NO2 25 5 PPM NOx 88 2 PPM SAMPLE 12 34 ALARMx MAIN MENU gt RANGE AVERAGING TIME CALIBRATION FACTORS CALIBRATION INSTRUMENT CONTROLS DIAGNOSTICS ALARMS RANGE AVG DIAGS ALARM SERVICE PASSWORD Operation Range Menu 3 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific Range Menu The Range menu allows the operator to select the gas units NO NO2 NOx ranges and to set the custom ranges The screens below show the range menu in single range mode and dual auto range modes For more information about the single dual and auto range modes see Single Range Mode Dual Range Mode and Auto Range Mode below In the Main Menu choose Range Single Range Mode In the single range mode the NO NO2 and NOx channels each have one range one averaging time and one span coefficient By default the three analog outputs are arranged on the rear panel connector as shown in Figure 3 4 See Table 3 2 for channels and pin connections Single range mode may be selected from the Single Dual Auto Select in the Service Menu later in this chapter RANGE RANGE gt GAS UNITS PPM gt GAS UNITS PPM NO RANGE 50 HI NO RANGE 100 NO2 RANGE 50 LO NO RANGE 50 NOx RANGE 50 HI NO2 RANGE 100 SET CUSTOM RANGES LO NO2 RANGE
111. S ALARM PRESSURE ACTUAL MIN 20 0 mmHg SET MIN TO 30 0 mmHg INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Alarms Menu 3 78 Model 42i High Level Instruction Manual Thermo Fisher Scientific Flow The Flow screen displays the current bypass flow reading if the bypass flow option is installed and sets the minimum and maximum alarm limits Acceptable alarm limits range from 0 to 1 LPM If the sample flow reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu In the Main Menu choose Alarms gt Flow Min and Max Flow Limits The Minimum Flow alarm limit screen is used to change the minimum sample flow alarm limit The minimum and maximum sample flow screens function the same way In the Main Menu choose Alarms gt Flow gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value Ozonator Flow The Ozonator Flow screen read only is used to display the ozonator flow readings If the ozonator flow reading is 0 050 LPM 50 cc or below an alarm is activated and an alarm condition screen appears as LOW If the ozonator flow is above 0 050 LPM the no alarm condition screen is FLOW ACTUAL 0 531 LPM gt MIN 0 350 LPM MAX 0 900 LPM RANGE AVG DIAGS ALARM FLOW ACTUAL MIN 0 350 LPM SET MIN TO 0 360 LPM INC DEC SAVE VALUE R
112. SET TO OF RECS CHANGE ACCEPT RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 33 The Record Display screen read only displays the selected records Use and to view all the items in the record Use and to view records at different times Date and Time The Date and Time screen is used to set a start date and time for which to view logged data For example if 20 JUN 2005 10 00 is entered then the first logged data record that is displayed is the first record after this time If set to one minute logging this would be at 20 JUN 2005 10 01 Use and to increment or decrement the selected field Use to advance to next field Press to set the date and time of the first record to be displayed and continue to the record display screen SET BACK FROM CURRENT 0000000 TOTAL LRECS 20 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM time date flags 10 00 06 20 05 FC0088900 11 00 06 20 05 FC0088900 12 00 06 20 05 FC0088900 13 00 06 20 05 FC0088900 PGUP DN PAN L R RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 34 Model 42i High Level Instruction Manual Thermo Fisher Scientific The Record Display screen read only displays the selected records Use and to view all the items in the record Use and to view records at different times Erase Log The E
113. STX gt DA lt CR gt Reply String lt STX gt MD03 lt SP gt 001 lt SP gt 2578 01 lt SP gt 03 lt SP gt 04 lt SP gt 0000000000 lt SP gt 002 lt SP gt Address First Concentration E format 25 78 Address 1 5681 00 lt SP gt 03 lt SP gt 04 lt SP gt 0000000000 lt SP gt 003 lt SP gt 1175 01 lt SP gt 03 lt SP gt 04 lt SP Second Concentration 5 681 Address 2 Third Concentration 11 75 0000000000 lt SP gt lt CR gt The attached concentrations are in the selected gas units The measurements that are attached to the response if not valid in a particular mode then a value of 0 0 will be reported The following measurements reported in response to DA command are for the Model 42i High Level The 3 measurements reported in single range mode include NO NO2 NOx The 6 measurements reported in dual or auto range modes include low NO low NO2 low NOx high NO high NO2 high NOx Measurements reported in response to DA command Single Range Mode Dual Auto Range Mode Geysitech Bayern Hessen Protocol Geysitech Commands Thermo Fisher Scientific Model 42i High Level Instruction Manual D 7 See Table D 1 for operating status and Table D 2 for error status for the Model 42i High Level Table D 1 Operating Status for Model 42i High Level D7 D6 D5 D4 D3 D2 D1 D0 Bit 8 7 6 5 4 3 2 1 Hex value 80 40 20 10 08 04 02 0
114. Serial Communication Parameters The following are the communication parameters that are used to configure the serial port of the iSeries to support MODBUS RTU protocol Number of Data bits 8 Number of Stop bits 1 Parity None Data rate from 1200 115200 Baud 9600 is default TCP Communication Parameters iSeries Instruments support the MODBUS TCP protocol The register definition is the same as for the serial interface TCP connection port for MODBUS 502 Application Data Unit Definition Here are the MODBUS ADU Application Data Unit formats over serial and TCP IP Slave Address The MODBUS slave address is a single byte in length This is the same as the instrument ID used for C Link commands and can be between 1 and 127 decimal i e 0x01 hex to 0x7F hex This address is only used for MODBUS RTU over serial connections Note Device ID 0 used for broadcast MODBUS commands is not supported Device IDs 128 through 247 i e 0x80 hex to 0xF7 hex are not supported because of limitations imposed by C Link MBAP Header In MODBUS over TCP IP a MODBUS Application Protocol Header MBAP is used to identify the message This header consists of the following components Serial Slave Address Function Code Data Error Check TCP IP MBAP Header Function Code Data Transaction Identifier 2 Bytes 0x0000 to 0xFFFF Passed back in response Protocol Identifier 2 Bytes 0x00 MODBUS protocol Length 2
115. T ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM RESETXX RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 39 Logging Period Min The Logging Period Min screen is used to select the logging period in minutes for the record format srec or lrec List of choices include off 1 5 15 30 and 60 minutes default In the Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging gt Logging Period Min Use and to scroll through a list of choices Press to set the logging period Memory Allocation Percent The Memory Allocation Percent screen is used to select the percentage of each record type for both short records and long records Percentages between 0 and 100 are available in increments of 10 Changing this value results in log erasure for both short records and long records In the Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging gt Memory Allocation Use and to scroll through a list of choices Press to set the percentage for both record types and proceed to the erasure warning screen DATALOGGING SETTINGS gt LOGGING PERIOD MIN OFF MEMORY ALLOCATION 50 DATA TREATMENT AVG RANGE AVG DIAGS ALARM SET PERIOD FOR SREC CURRENTLY OFF MIN SET TO 60 MIN CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Oper
116. V TEMP CHAMBER PRES FLOW RANGE AVG DIAGS ALARM PMT VOLTS OZONATOR FLOW ANALOG INPUTS gt NONE ANALOG IN 1 ANALOG IN 2 ANALOG IN 3 ANALOG IN 4 ANALOG IN 5 ANALOG IN 6 RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 38 Model 42i High Level Instruction Manual Thermo Fisher Scientific Press to commit changes to selected record format and erase record log file data Press to confirm changes Reset to Default Content The Reset to Default Content screen is used to reset all of the datalogging field items to default values For more information about selecting the analog output signal group choices see Select Content above In the Main Menu choose Instrument Controls gt Datalogging Settings gt Reset to Default Content Press to reset selected record format and erase record log file data Press to reset Configure Datalogging The Configure Datalogging menu deals with datalogging configuration for the currently selected record type In the Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging CHANGE LREC FORMAT AND CHANGE LREC FORMAT AND ERASE LREC LOG FILE DATA ERASE LREC LOG FILE DATA COMMIT COMMIT ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM CHANGES RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM RESET LREC FORMAT AND RESET LREC FORMAT AND ERASE LREC LOG FILE DATA ERASE LREC LOG FILE DATA RESET RESE
117. VG SEC 60 RANGE AVG DIAGS ALARM ZERO CAL RESET SPAN CAL RESET OFF ZERO SPAN RATIO 1 Operation Calibration Menu 3 26 Model 42i High Level Instruction Manual Thermo Fisher Scientific Next Time The Next Time screen is used to view and set the next zero span check date and time Once the initial zero span check is performed the date and time of the next zero span check is calculated and displayed In the Main Menu choose Calibration gt Zero Span Check gt Next Time Use and to move and change the value of the date and time Press to accept a change Period Hours The Zero Span Period Hours screen defines the period or interval between zero span checks Periods between 0 and 999 hours are acceptable To turn the zero span check off set the period to 0 In the Main Menu choose Calibration gt Zero Span Check gt Period Hours Use and to increment and decrement the numeric value Press to save the period NEXT DATE AND TIME NEXT DATE AND TIME 01 JAN 2005 12 00 02 JAN 2005 12 00 PRESS TO EDIT SETTING DAYS SET MONTHS CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM ZERO SPAN PERIOD CURRENTLY 024 HRS SET TO 025 HRS MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Calibration Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 27 Zero Span Purge Duration Minutes The Zero Duration Minu
118. X gt is abbreviation for Start of Text ASCII code 0x02 lt ETX gt is abbreviation for End of Text ASCII code 0x03 lt SP gt is abbreviation for space ASCII code 0x20 The following is the basic structure of a Geysitech command lt STX gt Command text lt ETX gt lt BCC gt OR lt STX gt Command text lt CR gt Each Command is framed by control characters lt STX gt at the start and terminated with either lt ETX gt or lt CR gt If a command is terminated with lt ETX gt then additional two characters lt BCC gt is attached after lt ETX gt this is the block checksum TCP Communication Parameters Instrument Address Abbreviations Used Basic Command Structure Geysitech Bayern Hessen Protocol Block Checksum lt BCC gt Thermo Fisher Scientific Model 42i High Level Instruction Manual D 3 The block checksum is calculated beginning with a seed value of 00000000 binary 0x00 and bitwise exclusive ORing with each of the characters of the command string or response including the framing characters lt STX gt and lt ETX gt The checksum works as an error check The command terminator determines the presence or absence of lt BCC gt If a command is terminated by lt ETX gt then the next two characters are the checksum if the command is terminated with lt CR gt no checksum is attached The block checksum is represented by two characters which represent a 2 digit hex number 1byte e g 1 byt
119. YER YES BYPASS FLOW YES CONVERTER SS DILUTION NO RANGE AVG DIAGS ALARM AUTO CALIBRATION NO CONTACT INFORMATION CALL CENTER 508 520 0430 WEB WWW THERMO COM RANGE AVG DIAGS ALARM Operation Alarms Menu 3 72 Model 42i High Level Instruction Manual Thermo Fisher Scientific Alarms Menu The alarms menu displays a list of items that are monitored by the analyzer If the item being monitored goes outside the lower or upper limit the status of that item will go from OK to either LOW or HIGH respectively If the alarm is not a level alarm the status will go from OK to FAIL The number of alarms detected is displayed to indicate how many alarms have occurred If no alarms are detected the number zero is displayed To see the actual reading of an item and its minimum and maximum limits move the cursor to the item and press The zero span check and auto calibration screens are displayed if the zero span check or auto calibration options are enabled The motherboard status interface board status and I O expansion board status if installed indicates that the power supplies are working and connections are successful There are no setting screens for these alarms In the Main Menu choose Alarms ALARMS ALARMS DETECTED 0 gt INTERNAL TEMP OK CHAMBER TEMP OK COOLER TEMP OK CONVERTER TEMP OK PRESSURE OK FLOW OK RANGE AVG DIAGS ALARM OZONATOR FLOW OK ZERO CHECK OK SPAN CHECK OK ZERO
120. a time period 10 to 300 seconds over which NO NO2 and NOx measurements are averaged The average concentration of the NO NO2 and NOx readings are calculated for that time period The front panel display and analog outputs are updated every 10 seconds with the calculated averages An averaging time of 10 seconds for example means that the average concentration of the last 10 seconds will be output at each update An averaging time of 300 seconds means that the moving average concentration of the last 300 seconds will be output at each 10 second update Therefore the lower the averaging time the faster the front panel display and analog outputs respond to concentration changes Longer averaging times are typically used to smooth output data The Averaging Time screen for the single range mode is shown below In the dual and auto range modes an averaging time menu is displayed before the averaging time screen This additional menu is needed because dual and auto range modes have two averaging times high and low The averaging time screens function the same way in the single dual and auto range modes The following averaging times are available 10 20 30 60 90 120 180 240 and 300 seconds Additional averaging times are available in manual NO and manual NOx modes 1 2 and 5 seconds For more information about the manual mode see Auto Manual Mode later in this chapter In the Main Menu choose Averaging Time Use
121. acing a Fan PMT Cooler and Reaction Chamber Assembly Replacement Use the following procedure to replace the PMT cooler and reaction chamber assembly see Figure 7 6 Equipment Required PMT cooler Wrench 7 16 inch Wrench 9 16 inch Nut driver 1 4 inch Philips screwdriver Wire cutters Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing PMT Cooler and Reaction Chamber Assembly Replacement 7 12 Model 42i High Level Instruction Manual Thermo Fisher Scientific 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Disconnect the reaction chamber connector from the temperature control board 3 Snap off the temperature control board from the board mounts 4 Remove the four screws securing the cooler shroud and remove the shroud Figure 7 6 PMT Cooler and Reaction Chamber 5 Disconnect plumbing connections from the reaction chamber 6 Disconnect the PMT cooler cables from the PMT high voltage power supply the input board and the measurement interface board Remove all tie wraps securing the cables Captive Screws 4 Cooler Shroud Temperature Control Board Reaction Chamber BNC Connector to Input Board To PMT HVPS To BENCH on
122. actors gt Calibration Pressure Use and to increment or decrement the calibration pressure value Press to save the new calibration pressure NO COEFFICIENT NO 51 4 SET COEF TO 1 000 INC DEC SAVE VALUE RANGE AVG DIAGS ALARM CALIBRATION PRESSURE PRESSURE 33 8 SET CAL PRES TO 35 0 INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Calibration Menu 3 22 Model 42i High Level Instruction Manual Thermo Fisher Scientific Reset User Calibration Default The Reset User Calibration Default screen allows the user to reset the calibration configuration values to factory defaults In the Main Menu choose Service gt Calibration Factors gt Reset User Cal Defaults Press to warn user and enable restore with Use to reset the calibration pressure reference value when pressed after Calibration Menu The Calibration menu is used to calibrate the analyzer including zero backgrounds the NO NO2 and NOx coefficients and the calibration pressure The screens below show the calibration menu in single mode and dual auto range modes The calibration procedure is the same in dual auto or single range however there are two sets of gas coefficients in dual or auto range i e low and high coefficients This enables each range to be calibrated separately When calibrating the instrument in dual or auto range be sure to use a low span gas to calibrate the low range and a high
123. address gt if present matches the Instrument Address and the command is terminated with either lt CR gt with no checksum or lt ETX gt followed by the correct checksum lt BCC gt Data Sampling Data Query Command DA Geysitech Bayern Hessen Protocol Geysitech Commands Thermo Fisher Scientific Model 42i High Level Instruction Manual D 5 Sample Data Reply String in response to Data Query Command DA In response to a valid data query command DA the instrument responds in the following format lt STX gt MD02 lt SP gt lt address gt lt SP gt lt measured value1 gt lt SP gt lt status gt lt SP gt lt SFKT gt lt SP gt lt address 1 gt lt SP gt lt measured value2 gt lt SP gt lt status gt lt SP gt lt SFKT gt lt ETX gt lt BCC gt The response uses the same command terminators as used by the received command i e if the received command was terminated with a lt CR gt the response is terminated with lt CR gt and if the command was terminated with a lt ETX gt lt BCC gt the response is terminated with lt ETX gt and the computed checksum lt BCC gt The 02 after the MD indicates that two measurements are present in the reply string a 03 for three measurements and so on this will also determine the length of the reply string lt address gt is the Instrument Address Each subsequent measurement attached to the response will have the lt address X gt where X keeps incrementing by 1 for each measurement
124. al Inputs Sixteen digital inputs are available which may be programmed to signal instrument modes and special conditions including NO Measure Mode System Description I O Components Thermo Fisher Scientific Model 42i High Level Instruction Manual 8 11 NOx Measure Mode Zero Gas Mode Span Gas Mode The actual use of these inputs will vary based on analyzer configuration The digital inputs are TTL level compatible and are pulled up within the analyzer The active state can be user defined in firmware Serial Ports Two serial ports allow daisy chaining so that multiple analyzers may be linked using one PC serial port The standard bi directional serial interface can be configured for either RS 232 or RS 485 The serial baud rate is user selectable in firmware for standard speeds from 1200 to 19 200 baud The user can also set the data bits parity and stop bits The following protocols are supported C Link Streaming Data Modbus Slave The Streaming Data protocol transmits user selected measurement data via the serial port in real time for capture by a serial printer data logger or PC RS 232 Connection A null modem crossed cable is required when connecting the analyzer to an IBM Compatible PC However a straight cable one to one may be required when connecting the analyzer to other remote devices As a general rule when the connector of the host remote device is female a stra
125. alog output zero and span point through firmware At least 5 of full scale over and under range are also supported The analog outputs may be assigned to any measurement or diagnostic channel with a user defined range in the units of the selected parameter The current outputs are independent of the voltage outputs The current outputs are isolated from the instrument power and ground but they share a common return line Isolated GND Analog Voltage Inputs Optional The optional I O expansion board includes eight analog voltage inputs These inputs are used to gather measurement data from third party devices such as meteorological equipment The user may assign a label unit and a voltage to user defined unit conversion table up to 16 points All voltage inputs have a resolution of 12 bits over the range of 0 to 10 volts Digital Relay Outputs The instrument includes one power fail relay on motherboard and ten digital output relays on the digital output board These are reed relays rated for at least 500 mA 200VDC The power fail relay is Form C both normally opened and normally closed contacts All other relays are Form A normally opened contacts and are used to provide alarm status and mode information from the analyzer as well as remote control to other devices such as for controlling valves during calibration The user may select what information is sent out each relay and whether the active state is opened or closed Digit
126. ard gain This may be used as a troubleshooting tool for the input board The gain setting and test mode are reset upon exiting this screen In the Main Menu choose Service gt Input Board Calibration gt Frequency Disp Press to leave warning screen Use and to toggle the test signal and bypass the PMT Use and to change the gain between 1 10 and 100 Temperature Calibration The Temperature calibration screen allows the user to view and set the ambient temperature sensor calibration The temperature calibration screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter In the Main Menu choose Service gt Temperature Calibration Use and to move and change the value Press to save set to value as actual value INPUT BOARD CALIBRATION INPUT BOARD TEST TO CALIBRATE GAIN 1 TEST OFF XXXXXX WARNING XXXXXXX FREQ 5000 CONCENTRATION CALCULATIONX CHG GAIN TEST MODE IS HALTED INSIDE XXXX THIS SCREEN XXXXXXX RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM WARNING This adjustment should only be performed by an instrument service technician Operation Service Menu 3 92 Model 42i High Level Instruction Manual Thermo Fisher Scientific Analog Output Calibration The Analog Output Calibration menu is a selection of 6 voltage channels and 6 current channels if I O ex
127. arm maximum value to 215 Send set alarm conc no max 215 Receive set alarm conc no max 215 ok alarm converter temp min alarm converter temp max These commands report the converter temperature alarm minimum and maximum value current settings The example below reports that the converter temperature alarm minimum value is 600 0 C Send alarm converter temp min Receive alarm converter temp min 600 0 deg C set alarm converter temp min value set alarm converter temp max value These commands set the converter temperature alarm minimum and maximum values to value where value is a floating point number representing converter temperature alarm limits in degrees C The example below sets the converter temperature alarm maximum value to 640 0 C C Link Protocol Commands Alarms B 14 Model 42i High Level Instruction Manual Thermo Fisher Scientific Send set alarm converter temp max 640 Receive set alarm converter temp max 640 ok alarm cooler temp min alarm cooler temp max These commands report the cooler temperature alarm minimum and maximum value current settings The example below reports that the cooler temperature alarm minimum value is 10 0 C Send alarm cooler temp min Receive alarm cooler temp min 10 0 deg C set alarm cooler temp min value set alarm cooler temp max value These commands set the cooler temperature alarm minimum and maximum values to value where value is a floating point number representing
128. ate The Logic State screen is used to change the I O relay to either normally open or normally closed The default state is open which indicates that a relay connected between the digital input pin and ground is normally open and closes to trigger the digital input action If nothing is connected to the digital input pin the state should be left at open to prevent the action from being triggered Press to toggle and set the logic state open or closed NON ALARM STATUS ITEMS gt NONE AUTORANGE NOx SERVICE UNITS ZERO MODE SPAN MODE NO MODE RANGE AVG DIAGS ALARM NOX MODE SAMPLE MODE PURGE MODE DIGITAL INPUT SETTINGS gt 1 NOP NO MODE 2 NOP NOX MODE 3 NOP SET BACKGROUND 4 NOP CAL TO LO SPAN 5 NOP AOUTS TO ZERO 6 NOP AOUTS TO FS 7 NOP NONE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 53 Instrument Action The Instrument Action screen allows the user to select the instrument state that is tied to the selected digital input The selected item is shown by lt after it In the Main Menu choose Instrument Controls gt I O Configuration gt Digital Input Settings gt Select Relay gt Instrument Action Use and to scroll through a list of choices Press to save the new selection for the relay Analog Output Configuration The Analog Output Configuration menu displays a list of the analog output chann
129. ation Calibration 4 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific 3 Be sure the instrument is in the auto mode that is NO NO2 and NOx measurements are being displayed on the front panel display If the instrument is not in auto mode a Press to display the Main Menu then choose Instrument Controls gt Auto Manual Mode b Select NO NOx and press c Press to return to the Run screen 4 Select the RANGE soft key if available or locate this function in the menu to display the Range screen 5 Select NO range and push the AVG soft key to display the Averaging Time screen It is recommended that a higher averaging time be used for best results For more information about the ranges or averaging time see the Operation chapter Note The averaging time should be less than the zero duration and less than the span duration 6 Set the calibration pressure to the current reactor pressure a Push choose gt Calibration Factors gt Cal Pressure b Use to increment decrement the value to match the current reactor pressure and press to save the new calibration pressure value 7 Verify that any filters used during normal monitoring are also used during calibration 8 Connect the analog digital outputs to a strip chart recorder s or PC s Calibration Note that with a Model 42i High Level equipped with internal zero span and sample valves the ZERO and SPAN ports should give i
130. ation Instrument Controls Menu 3 40 Model 42i High Level Instruction Manual Thermo Fisher Scientific Press to confirm change Data Treatment The Data Treatment screen is used to select the data type for the selected record whether the data should be averaged over the interval the minimum or maximum used or the current value logged Data treatment doesn t apply to all data just to the concentration measurement All other data points log the current value at the end of the interval In the Main Menu choose Instrument Controls gt Datalogging Settings gt Configure Datalogging gt Data Treatment Use and to scroll through a list of choices Press to set the data type SET PERCENT SRECS SET PERCENT SRECS CURRENTLY 50 CURRENTLY 50 SET TO 60 SET TO 60 THIS WILL ERASE ALL LOGS x PRESS TO CONFIRM CHANGE CHANGE VALUE SAVE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM SET LREC DATA TYPE CURRENTLY AVG SET TO CUR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 41 Communication Settings The communication Settings menu is used with communications control and configuration In the Main Menu choose Instrument Controls gt Communication Settings Baud Rate The Baud Rate screen is used to set the RS 232 RS 485 interface baud rate Baud rates of 1200 2400 4800 a
131. ature screens function the same way Note The ozonator will not turn on if the converter is below alarm limit In the Main Menu choose Alarms gt Converter Temp gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value CONVERTER TEMPERATURE ACTUAL 625 0 oC gt MIN 600 0 oC MAX 650 0 oC RANGE AVG DIAGS ALARM CONVERTER TEMPERATURE ACTUAL MIN 600 0 oC SET MIN TO 610 0 oC INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Alarms Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 77 Pressure The Pressure screen displays the current reaction chamber pressure reading and sets the minimum and maximum alarm limits Acceptable alarm limits range from 20 to 100 mmHg If the pressure reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu In the Main Menu choose Alarms gt Pressure Min and Max Pressure Limits The Minimum Pressure alarm limit screen is used to change the minimum pressure alarm limit The minimum and maximum pressure screens function the same way In the Main Menu choose Alarms gt Pressure gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value PRESSURE ACTUAL 33 8 mmHg gt MIN 20 0 mmHg MAX 100 0 mmHg RANGE AVG DIAG
132. ax value Cooler Temp User set alarm min value User set alarm max value MINIMUM OUTPUT PERCENT SELECTED OUTPUT V ALL CURRENTLY N A SET TO 0000 5 CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 56 Model 42i High Level Instruction Manual Thermo Fisher Scientific Choose Signal to Output The Choose Signal to Output screen displays a submenu list of the analog output signal group choices Group choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board option is installed This allows the user to select the output signal to the selected output channel The Concentrations screen is shown below See Table 3 7 below for a list of items for each signal group choice In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Output Config gt Select Channel gt Choose Signal To Output Use and to move the cursor up and down Press to select a choice NO2 Converter Temp User set alarm min value User set alarm max value Chamber Pressure User set alarm min value User set alarm max value Flow User set alarm min value User set alarm max value PMT Volts 700 volts 1100 volts Everything Else 0 units 10 units Table 3 6 Analog Output Zero to Full Scale Table continued Output Zero Value Full Scale 100 Value Table 3 7 Signal Type Group Choices Concentrations Other Measurements Analog Inputs Non
133. bb oo pp qq yy srec aa bb oo pp qq yy xxxx the number of past records yy the number of records to return 1 to 10 aa hours 01 to 24 bb minutes 01 to 59 C Link Protocol Commands Datalogging Thermo Fisher Scientific Model 42i High Level Instruction Manual B 19 oo month 01 to 12 pp day 01 to 31 qq year These commands output long or short records and dynamic data The output format is determined by the set lrec format and set srec format commands The logging time is determined by the set lrec per and set srec per commands In dual range the long records and short records contain the high and low NO and NOx concentrations In single range the low NO and low NOx values are set to 0 and the high NO and high NOx are used In NO or NOx only mode the pertinent high value used other concentrations are set to 0 Concentrations are stored in either ppm or mg m3 In the following example there are 740 long records currently stored in memory When the command lrec 100 5 is sent the instrument counts back 100 records from the last record collected record 740 and then returns 5 records 640 641 642 643 and 644 For details on how to decode the flag fields within these records see Figure B 1 in the flags command Send lrec 100 5 Receive lrec 100 5 11 03 02 22 03 flags 54089100 no 8416E 1 nox 8458E 1 lono 6474E 1 lonox 6506E 1 pres 131 4 pmtt 53 1 intt 80 0 rctt 80 0 convt 61 smpl
134. ber in scratch pad list to value where value is the index number of a variable in the analog out variable list Available variables and their corresponding index numbers may be obtained using the command list var aout The set sp field command is used to create a list of variables which can then be transferred into the long record short record or streaming data lists using the set copy sp to lrec set copy sp to srec or set copy sp to stream commands Send set sp field 1 34 Receive set sp field 1 34 ok stream per This command reports the currently set time interval in seconds for streaming data Send stream per Receive stream per 10 set stream per number value number value 1 2 5 10 20 30 60 90 120 180 240 300 This command sets the time interval between two consecutive streaming data strings to number value in seconds The example below sets the number value to 10 seconds Send set stream per 10 Receive set stream per 10 ok stream time This command reports if the streaming data string will have a time stamp attached to it or not according to Table B 5 Send stream time Receive stream time 1 set stream time value This command enables value where value is to attach or disable time stamp to streaming data string according to Table B 5 The example below attaches a time stamp to streaming data C Link Protocol Commands Calibration B 24 Model 42i
135. bient air sample is drawn into the Model 42i High Level through the sample bulkhead as shown in Figure 1 1 The sample flows through a capillary and then to the mode solenoid valve The solenoid valve routes the sample either straight to the reaction chamber NO mode or through the NO2 to NO converter and then to the reaction chamber NOx mode A flow sensor prior to the reaction chamber measures the sample flow Dry air enters the Model 42i High Level through the dry air bulkhead passes through a flow switch and then through a silent discharge ozonator The ozonator generates the ozone needed for the chemiluminescent reaction At the reaction chamber the ozone reacts with the NO in the sample to produce excited NO2 molecules A photomultiplier tube PMT housed in a thermoelectric cooler detects the luminescence generated during this reaction From the reaction chamber the exhaust travels through the ozone O3 converter to the pump and is released through the vent The NO and NOx concentrations calculated in the NO and NOx modes are stored in memory The difference between the concentrations is used to calculate the NO2 concentration The Model 42i High Level outputs NO h O NO O NO 2 2 3 Introduction Specifications Thermo Fisher Scientific 42i High Level Instruction Manual 1 3 NO2 and NOx concentrations to the front panel display the analog outputs and also makes the data available over the serial or
136. c Model 42i High Level Instruction Manual 9 3 Bypass Flow The regulated bypass flow system is used when the sample must be transported over a long distance It is also used when an unstable flow is being provided The regulated bypass flow system provides make up air through the sample regulator and eliminates instrument drift due to pressure changes Figure 9 2 Bypass Flow Option Flow Schematic Permeation Dryer Assembly The permeation dryer minimizes routine maintenance procedures by providing a continuous stream of dry air to the ozonator using the selective water permeation characteristics of the dryer With the permeation dryer option it is not necessary to constantly replenish the ozonator air drying column as in the standard instrument Refer to the Operation chapter for more information Ammonia Scrubber The ammonia scrubber is mounted internally and removes ammonia from the sample air Optional Equipment Teflon Particulate Filter 9 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific Teflon Particulate Filter A 5 10 micron pore size two inch diameter Teflon element is available for the Model 42i High Level This filter should be installed just prior to the SAMPLE bulkhead When using a filter all calibrations and span checks must be performed through the filter Ozone Particulate Filter The ozone particulate filter minimizes the potential for contamination of the ozonator by trapping any
137. c electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Photomultiplier Tube Replacement 7 14 Model 42i High Level Instruction Manual Thermo Fisher Scientific cover plate Figure 7 7 If the cooler fan is attached unplug the fan power cord if necessary Figure 7 7 Replacing the PMT 4 Remove the three retaining screws holding PMT base assembly to the cooler using a 5 16 inch nut driver 5 Pull the PMT and PMT base from cooler assembly by twisting it slightly back and forth 6 To install PMT follow previous steps in reverse making sure to backfill the cooler with dry air or nitrogen prior to replacing the PMT 7 Perform a photomultiplier tube calibration See Photomultiplier Tube Calibration in the Operation chapter PMT Cover Plate Screws 3 PMT Shroud Screws 4 PMT Base Screws 3 PMT Base Assembly Equipment Damage Do not point the photomultiplier tube at a light source This can permanently damage the tube Servicing PMT High Voltage Power Supply Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 15 PMT High Voltage Power Supply Replacement Use the following procedure to replace the PMT high voltage power supply Figure 7 8 Equipment Required PMT high voltage power supply Nut driver 1 4 inch Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover
138. calibrated separately This is necessary if the two ranges are not close to one another For example if the low NO range is set to 0 50 ppm and the high NO range is set to 0 1 000 ppm By default in the dual range mode the analog outputs are arranged on the rear panel connector as shown in Figure 3 5 See Table 3 3 for channels and pin connections Dual range mode may be selected from the Single Dual Auto Select in the Service Menu later in this chapter Figure 3 5 Pin Out of Rear Panel Connector in Dual Range Mode Operation Range Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 11 Table 3 3 Default Analog Outputs in Dual Range Mode Note All channels are user definable If any customization has been made to the analog output configuration the default selections may not apply Auto Range Mode The auto range mode switches the NO NO2 and NOx analog outputs between high and low ranges depending on the NOx concentration level except when continuous NO mode is active The high and low ranges are defined in the Range menu For example suppose the low ranges are set to 50 ppm and the high ranges are set to 100 ppm Figure 3 6 Sample concentrations below 50 ppm are presented to the low ranges analog outputs and sample concentrations above 50 ppm are presented to the high ranges analog outputs When the low ranges are active the status output is at 0 volts When the high ranges are active th
139. cks lrec per srec per These commands report the long and short records logging period The example below shows that the short record logging period is 5 minutes Send srec per Receive srec per 5 min set srec per value set srec per value value 1 5 15 30 60 These commands set the long and short records logging period to value in minutes The example below sets the long record logging period to 15 minutes Send set lrec per 15 Receive set lrec per 15 ok no of lrec no of srec These commands report the number of long and short records stored in the long and short records memory The example below shows that 50 long records have been stored in the memory Send no of lrec Receive no of lrec 50 recs malloc lrec malloc srec These commands report the currently set memory allocation for long and short records in percent of total memory Send malloc lrec Receive malloc lrec 10 C Link Protocol Commands Datalogging B 22 Model 42i High Level Instruction Manual Thermo Fisher Scientific set malloc lrec value set malloc srec value value 0 to 100 These commands set the percent of memory space allocated for long and short records to value where value is a floating point number representing percent The example below sets the memory allocation for long records to 10 Note Issuing these commands will clear all the logging data memory All the existing records should be retrieved using appropriate
140. concentration B 10 no bkg Reports sets current NO background B 26 no coef Reports sets current NO coefficient B 25 no gas Reports sets NO span gas concentration B 25 no of lrec Reports sets number of long records stored in memory B 21 no of srec Reports sets number of short records stored in memory B 21 no2 Reports current NO2 concentration B 10 no2 coef Reports sets current NO2 coefficient B 25 no2 gas Reports sets NO2 span gas concentration B 25 nox Reports current NOx concentration B 10 nox bkg Reports sets current NOx background B 26 nox coef Reports sets current NOx coefficient B 25 nox gas Reports sets NOx span gas concentration B 25 ozonator Reports sets ozonator on or off B 34 ozonator flow Reports current ozonator flow B 34 ozonator safety Reports sets ozonator safety on or off B 34 ozonator status Reports status of ozonator and safety B 35 pmt status Reports sets PMT status on or off B 35 pmt temp Reports temperature of the PMT cooler same as cooler temperature B 11 pmt voltage Reports current PMT voltage B 11 Table B 1 C Link Protocol Commands continued Command Description Page C Link Protocol Commands Commands B 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific pres Reports current reaction chamber pressure B 11 pres cal Reports sets pressure used for calibration B 27 pres comp Reports sets pressure compensation on or
141. configuration the default selections may not apply Channel Pin Description 1 14 NO Analog Output 2 33 NO2 Analog Output 3 15 NOx Analog Output 4 34 Range Status half scale high range zero scale low range 5 17 None 6 36 None Ground 16 18 19 35 37 Signal Ground Operation Range Menu 3 14 Model 42i High Level Instruction Manual Thermo Fisher Scientific Gas Units The Gas Units screen defines how the NO NO2 and NOx concentration readings are expressed Gas units of parts per million ppm and milligrams per cubic meter mg m3 are available The mg m3 gas concentration mode is calculated using a standard pressure of 760 mmHg and a standard temperature of 20 C When switching the selected units from ppm to mg m3 the analog ranges all default to the highest range in that mode For example when switching from mg m3 to ppm all the ranges default to 5 000 ppm Therefore whenever you change units you should also check the range settings In the Main Menu choose Range gt Gas Units Use and to scroll through a list of choices Press to save the new units Note If the units change from ppm to mg m3 or vice versa the instrument should be recalculated particularly if the user s standard temperature is different from 20 C A display warning will appear that ranges will be defaulted and calibration parameters reset NO NO2 and NOx Ranges The NO NO2 and NOx Ra
142. cs and measurement system These illustrations can be used along with the connector pin descriptions in Table 6 3 through Table 6 9 to troubleshoot board level faults Figure 6 1 Board Level Connection Diagram Common Electronics 2 Pin P1 DIGITAL OUTPUTS 24VDC POWER SUPPLY MOTHER BOARD DIGITAL OUTPUT BOARD I O EXPANSION BOARD J14 J3 FRONT PANEL BOARD J1 LCD DISPLAY KEY PANEL J18 J2 J4 J3 J1 J10 J17 PJ1 PJ3 PJ2 FRONT PANEL POWER SW 16 Pin 4 Pin 8 Pin 34 Pin 3 Pin 2 Pin 3 Pin 3 Pin 3 Pin PJ6 3 Pin IPJ8 3 Pin 8 Pin 11 Pin 2 Pin EXPANSION RS485 ANALOG OUTPUTS DIGITAL INPUTS P1 A P1 B RS232 RS485 J2 10 BASE T J15 J5 15 Pin 8 Pin 37 Pin 9 Pin 9 Pin RS232 RS485 J1 EXPANSION I O J2 25 Pin 37 Pin AC AC REAR PANEL AC INPUT 3 Cond AC POWER_GOOD 24VDC TRANSFORMER 90VAC or 240VAC OPTIONS J4 8 Pin SPARE DATA DATA TO MEASUREMENT SYSTEM Troubleshooting Board Level Connection Diagrams Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 7 Figure 6 2 Board Level Connection Diagram Measurement System DATA J1 3 Pin SAMPLE SOL SPARE 2 SOL ZERO SPAN SOL NO NOX SOL GAS THERM AMBIENT TEMP THERM MEASUREMENT INTERFACE BOARD FAN2 PUMP 3 Pin 2 Pin 2 Pin 2 Pin 3 Pin 4 Pin CHAMBER PRESSURE 2 Pin COOLER
143. ctronics 6 6 Board Level Connection Diagram Measurement System 6 7 Properly Grounded Antistatic Wrist Strap 7 4 Component Layout 7 7 Removing the Measurement Bench and Lowering the Partition Panel 7 8 Replacing the Pump 7 10 Replacing a Fan 7 11 PMT Cooler and Reaction Chamber 7 12 Replacing the PMT 7 14 Replacing the PMT HVPS 7 16 Cleaning or Removing the Reaction Chamber 7 19 NO2 to NO Stainless Steel Converter Assembly 7 21 Replacing the Solenoid Valve 7 23 Replacing the Ozonator Assembly 7 24 Replacing the Input Board 7 26 Replacing the DC Power Supply 7 29 Rear Panel Analog Voltage Output Pins 7 30 Replacing the Pressure Transducer 7 33 Replacing the Scrubber 7 39 Re
144. d Thermo Fisher Scientific Model 42i High Level Instruction Manual 9 1 Chapter 9 Optional Equipment The Model 42i High Level is available with the following options Internal Zero Span Assembly on page 9 1 Bypass Flow on page 9 3 Ammonia Scrubber on page 9 3 Teflon Particulate Filter on page 9 4 Ozone Particulate Filter on page 9 4 NO2 to NO Converter on page 9 4 I O Expansion Board Assembly on page 9 4 Terminal Block and Cable Kits on page 9 4 Mounting Options on page 9 5 Internal Zero Span Assembly With the internal zero span assembly option a source of span gas is connected to the SPAN port and a source of zero air is connected to the ZERO port as shown in Figure 9 1 Zero and span gas should be supplied at atmospheric pressure It may be necessary to use an atmospheric dump bypass plumbing arrangement to accomplish this Refer to Setup Procedure in the Installation chapter for an illustration of an atmospheric dump bypass arrangement For more information refer to the Installation chapter If this option is installed refer to the Operation chapter for more information Optional Equipment Internal Zero Span Assembly 9 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 9 1 Zero Span Option Flow Diagram Optional Equipment Bypass Flow Thermo Fisher Scientifi
145. d as a string NO 18sBd ddd set no coef s n This is a line which also appears slightly indented The next field is also NO but the value is taken from the eighteenth element of the data response again interpreted as a string A button appears on this line which when pressed pops up an input dialog which will state Please enter a new value for NO using a d ddd format The string entered by the user is used to construct the output command If the user enters for example 1 234 the constructed command will be set no coef 1 234 NO 21f Code_0 Code_1 Code_2 Code_3 Code_4 Code_5 Code_6 Code_7 Code_8 Code_9 Code_10 Code_11 Lset range no d n This is a line which appears slightly indented the title is again NO and the value the twenty first element of the data response interpreted as a floating point number There is a no translation button which creates a selection list of twelve Code nn options The number of the user selection is used to create the output command Mode 6 12 13x local remote service service 0 1 Tset mode s n This is a line which has a title of Mode and value taken from the sixth field of the data response There is a bitfield extraction of bits 12 through 13 from the source the value type is not important here because the value is being translated to an output string Once the bits have been extracted they are shifted down to the bit zero position Thus the possible values of this example wil
146. dentical responses to the sample port when test gases are introduced The user should calibrate the Model 42i High Level using the sample port to introduce the zero and span gas sources After calibration the zero and span sources should be plumbed to the appropriate ports on the rear panel of the Model Calibration Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 3 42i High Level and then reintroduced to the instrument The Model 42i High Level should give identical responses to the test gases whether they are introduced via the sample port or the zero or span ports If not the plumbing and or valves should be serviced The following procedure discusses calibration of the Model 42i High Level analyzer using the gas phase titrator and zero gas generator previously described It is suggested that a calibration curve have at least seven points between the zero and full scale NO concentrations Although the seven point curve is optional two of whatever number of points is chosen should be located at the zero and 90 levels and the remaining points equally spaced between these values Connecting the GPT Apparatus Use the following procedure to connect the GPT apparatus 1 Assemble a dynamic calibration system such as the one shown in Figure 4 1 Figure 4 1 GPT System 2 Ensure that all flowmeters are calibrated under the conditions of use against a reliable standard such as a soap bubble meter or we
147. display is where you enter the NO2 calibration gas concentration 10 Set the NO2 calibration gas concentration to reflect the sum of the following the NO2 concentration generated by GPT NO ORIG NO REM and any NO2 impurity Use to move the cursor left and right and use to increment and decrement the numeric character at the cursor Where NO2 OUT diluted NO2 concentration at the output manifold ppm NO ORIG original NO concentration prior to addition of O3 ppm NO REM NO concentration remaining after addition of O3 ppm 11 Press to calculate and save the new NO2 coefficient based on the entered span concentration The analyzer does a one point NO2 span coefficient calculation corrects the NO2 reading for converter inefficiency and then adds the corrected NO2 to the NO signal to give a corrected NOx signal If the analyzer calculates a NO2 span coefficient of less than 0 96 either the entered NO2 concentration is incorrect the converter is not being heated to the proper temperature the instrument needs servicing leak or imbalance or the converter needs replacement or servicing The NO2 analog output will reflect the NO2 concentration generated by GPT any NO2 impurity and the NO2 zero offset F F F NO x F NO NO NO D O NO IMP 2 NO REM ORIG OUT 2 Calibration Calibration in Dual Range and Auto Range Mode Thermo Fisher Scientific Model 42i
148. e 5 1 Safety Precautions 5 1 Replacement Parts 5 1 Cleaning the Outside Case 5 2 Ozonator Air Feed Drying Column Replacement 5 2 Capillaries Inspection and Replacement 5 2 Contents viii Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermoelectric Cooler Fins Inspection and Cleaning 5 4 Fan Filters Inspection and Cleaning 5 4 Pump Rebuilding 5 5 Chapter 6 Troubleshooting 6 1 Safety Precautions 6 1 Troubleshooting Guides 6 2 Board Level Connection Diagrams 6 6 Connector Pin Descriptions 6 8 Service Locations 6 22 Chapter 7 Servicing 7 1 Safety Precautions
149. e None None NO single auto range mode Internal Temp Analog Input 1 NO2 single auto range mode Chamber Temp Analog Input 2 NOx single auto range mode Cooler Temp Analog Input 3 CHOOSE SIGNAL CONC SELECTED OUTPUT V1 CURRENTLY NONE SET TO NONE CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 57 Analog Input Configuration The Analog Input Configuration menu displays a list of the 8 analog input channels available for configuration This screen is displayed if the I O expansion board option is installed Configuration includes entering descriptor units decimal places choice of 1 10 points in the table and corresponding number of points selected In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config LO NO dual mode NO2 Converter Temp Analog Input 4 LO NO2 dual mode Chamber Pressure Analog Input 5 LO NOx dual mode Flow Analog Input 6 HI NO dual mode PMT Volts Analog Input 7 HI NO2 dual mode Analog Input 8 HI NOx dual mode Range NOx auto range mode Table 3 7 Signal Type Group Choices continued Concentrations Other Measurements Analog Inputs ANALOG INPUT CONFIG gt CHANNEL 1 IN1 CHANNEL 2 IN2 CHANNEL 3 IN3 CHANNEL 4 IN4 CHANNEL 5 IN5 CHANNEL 6 IN6 CHANNEL 7 IN7 RANGE AVG DIAGS ALARM ANALOG INPUT 01 CONFIG gt
150. e response These requests specify the starting address i e the address of the first output specified and the number of outputs The outputs are addressed starting at zero Therefore outputs numbered 1 16 are addressed as 0 15 MODBUS Protocol Function Codes C 4 42i High Level Instruction Manual Thermo Fisher Scientific The outputs in the response message are packed as one per bit of the data field Status is indicated as 1 Active on and 0 Inactive off The LSB of the first data byte contains the output addressed in the query The other outputs follow toward the high order end of this byte and from low order to high order in subsequent bytes If the returned output quantity is not a multiple of eight the remaining bits in the final data byte will be padded with zeros toward the high order end of the byte The Byte Count field specifies the quantity of complete bytes of data Note The values reported may not reflect the state of the actual relays in the instrument as the user may program these outputs for either active closed or open N Quantity of Outputs 8 if the remainder not equal to zero then N N 1 Here is an example of a request and response to read outputs 2 15 Request Function code 1 Byte 0x01 or 0x02 Starting Address 2 Bytes 0x0000 to maximum allowed by instrument Quantity of outputs 2 Bytes 1 to maximum allowed by instrument Unit Identifier 1 Byte 0x00 to 0xFF Passed back in re
151. e 0xAB hex checksum will be represented by the two characters A amp B The checksum is referred to as lt BCC gt throughout this document The following commands are supported by the Geysitech protocol Instrument Control Command ST Data Sampling Data Query Command DA There are three control commands supported by the Geysitech protocol This lt control command gt is a single letter which triggers an action in the instrument These commands are active only when service mode is inactive and the zero span option is present Command N switches the instrument gas mode to Zero mode Command K switches the instrument gas mode to Span mode Command M switches the instrument gas mode to Sample mode The following are the different acceptable formats of the ST command lt STX gt ST lt address gt lt control command gt lt ETX gt lt BCC gt OR lt STX gt ST lt address gt lt control command gt lt CR gt OR lt STX gt ST lt address gt lt SP gt lt control command gt lt CR gt OR lt STX gt ST lt address gt lt SP gt lt control command gt lt ETX gt lt BCC gt Block Checksum lt BCC gt Geysitech Commands Instrument Control Command ST Geysitech Bayern Hessen Protocol Geysitech Commands D 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific The lt address gt is optional which means it can be left out completely The lt address gt if pr
152. e Main Menu choose Alarms gt Cooler Temp Min and Max Cooler Temperature Limits The Minimum Cooler Temperature alarm limit screen is used to change the minimum cooler temperature alarm limit The minimum and maximum cooler temperature screens function the same way In the Main Menu choose Alarms gt Cooler Temp gt Min or Max Use and to increment or decrement the numeric value Press to save set to value as actual value COOLER TEMPERATURE ACTUAL 2 8 oC gt MIN 10 0 oC MAX 1 0 oC RANGE AVG DIAGS ALARM COOLER TEMPERATURE ACTUAL MIN 10 0 oC SET MIN TO 9 0 oC INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Alarms Menu 3 76 Model 42i High Level Instruction Manual Thermo Fisher Scientific Converter Temperature The Converter Temperature screen displays the current converter temperature and sets the minimum and maximum alarm limits Acceptable alarm limits range from 300 to 700 C The actual alarm setpoints should be set for the installed converter If the converter temperature reading goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu In the Main Menu choose Alarms gt Converter Temp Min and Max Converter Temperature Limits The Minimum Converter Temperature alarm limit screen is used to change the minimum converter temperature alarm limit The minimum and maximum converter temper
153. e Mode 3 10 Auto Range Mode 3 11 Gas Units 3 14 NO NO2 and NOx Ranges 3 14 Set Custom Ranges 3 16 Averaging Time 3 17 Calibration Factors Menu 3 18 NO and NOx Backgrounds 3 18 NO NO2 and NOx Coefficients 3 20 Calibration Pressure 3 21 Calibration Menu 3 22 Calibrate NO and NOx Background 3 23 Calibrate NO NO2 and NOx Coefficients 3 24 Calibrate Pressure 3 25 Zero Span Check 3 25 Contents vi Model 42i High Level Instruction Manual Thermo Fisher Scientific Instrument Controls Menu 3 29 Ozonator 3 29 PMT Supply
154. e instrument to local or remote mode The example below sets the instrument to the local mode Send set mode local Receive set mode local ok program no This command reports the analyzer s model information and program version number which will be dependant on the current version Send program no Receive program no iSeries 42iHL 01 00 01 074 C Link Protocol Commands I O Configuration B 40 Model 42i High Level Instruction Manual Thermo Fisher Scientific set layout ack This command disables the stale layout layout change indicator that is attached to each response if the layout has changed Send set layout ack Receive set layout ack ok I O Configuration analog iout range channel This command reports the analog current output range setting for channels where channel must be between 1 and 6 inclusive The example below reports current output channel 4 to the 4 20 mA range according to Table B 9 This command responds with feature not enabled if the I O expansion board is not detected Send analog iout range 4 Receive analog iout range 4 2 set analog iout range channel range This command sets analog current output channel to the channel range where channel is between 1 and 6 inclusive and range is set according to Table B 9 The example below sets current output channel 4 to the 0 20 mA range This command responds with feature not enabled if the I O expansion board is not detected
155. e previous steps in reverse Analog Output Testing The analog outputs should be tested if the concentration value on the front panel display disagrees with the analog outputs To check the analog outputs you connect a meter to an analog voltage output channel and compare the meter reading with the output value set on the Test Analog Outputs screen Use the following procedure to test the analog outputs 1 Connect a meter to the channel to be tested Figure 7 15 shows the analog output pins and Table 7 3 identifies the associated channels Power Supply Retaining Screws 4 BOTTOM VIEW Captive Screw Servicing Analog Output Testing 7 30 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 7 15 Rear Panel Analog Voltage Output Pins 2 From the Main Menu press to scroll to Diagnostics gt press gt to scroll to Test Analog Outputs and press The Test Analog Outputs screen appears 3 Press to scroll to the channel Voltage Channel 1 6 corresponding to the rear panel terminal pin where the meter is connected and press Table 7 3 Analog Output Channels and Rear Panel Pin Connections Channel Pin 1 14 2 33 3 15 4 34 5 17 6 36 Ground 16 18 19 35 37 Servicing Analog Output Adjustment Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 31 The Set Analog Outputs screen appears 4 Press to set the output to full scale The Output Se
156. e status output is at half of full scale When the high ranges are active the NOx concentration must drop to 95 of the low NOx range for the low ranges to become active In addition to each channel having two ranges each channel has two span coefficients There are two span coefficients so that each range can be calibrated separately This is necessary if the two ranges are not close to one another For example if the low NO range is set to 0 50 ppm and the high NO range is set to 0 1 000 ppm Channel Pin Description 1 14 NO High Range 2 33 NO2 High Range 3 15 NOx High Range 4 34 NO Low Range 5 17 NO2 Low Range 6 36 NOx Low Range Ground 16 18 19 35 37 Signal Ground Operation Range Menu 3 12 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 3 6 Analog Output in Auto Range Mode By default in the auto range mode the analog outputs are arranged on the rear panel connector as shown in Figure 3 7 See Table 3 4 for channels and pin connections Auto range mode may be selected from the Single Dual Auto Select in the Service Menu later in this chapter Operation Range Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 13 Figure 3 7 Pin Out of Rear Panel Connector in Auto Range Mode Table 3 4 Default Analog Outputs in Auto Range Mode Note All channels are user definable If any customization has been made to the analog output
157. ee Figure 7 3 Figure 7 3 Removing the Measurement Bench and Lowering the Partition Panel Equipment Required Philips screwdriver 1 Turn instrument OFF and unplug the power cord 2 If the instrument is mounted in a rack remove it from the rack Loosen Captive Screw Pass Through Connectors Partition Panel REMOVE SCREWS Remove Screw Remove Screws Remove Screw SLIDE BENCH OUT Remove Hidden Screw LOWER BENCH Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Pump Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 9 3 Remove the cover 4 Disconnect the plumbing connections at the rear of the measurement bench 5 Disconnect the three connectors that pass through the center of the partition panel 6 Remove two screws from the left side of the case viewed from front 7 Remove one screw from the bottom front of the case 8 Remove one screw from the top front of the partition panel 9 While holding the case securely loosen the captive screw at the rear of the measurement bench and pull the measurement bench from the rear of the case 10 Remove the screw at the top rear of the partition panel securing the top of partition panel to the measurement bench and lower the panel being careful not to put excessive t
158. el pulled high Serial Ports 1 RS 232 or RS 485 with two connectors baud rate 1200 115200 data bits parity and stop bits protocols C Link MODBUS and streaming data all user selectable Ethernet connection RJ45 connector for 10Mbs Ethernet connection static or dynamic TCP IP addressing In non condensing environments Performance specifications based on operation in 15 35 C range Thermo Fisher Scientific Model 42i High Level Instruction Manual 2 1 Chapter 2 Installation Installing the Model 42i High Level includes the following recommendations and procedures Lifting on page 2 1 Unpacking and Inspection on page 2 1 Setup Procedure on page 2 2 Startup on page 2 5 Lifting When lifting the instrument use procedure appropriate to lifting a heavy object such as bending at the knees while keeping your back straight and upright Grasp the instrument at the bottom in the front and at the rear of the unit Although one person can lift the unit it is desirable to have two persons lifting one by grasping the bottom in the front and the other by grasping the bottom in the rear Unpacking and Inspection The Model 42i High Level is shipped in two containers If there is obvious damage to the shipping container when you receive the instrument notify the carrier immediately and hold for inspection The carrier is responsible for any damage incurred during shipment Use
159. els available for configuration Channel choices include all voltage channels all current channels voltage channels 1 6 and current channels 1 6 if the I O expansion board option is installed Configuration choices include selecting range setting minimum maximum values and choosing signal to output In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Output Config DIGITAL INPUT SETUP gt LOGIC STATE OPEN INSTRUMENT ACTION RANGE AVG DIAGS ALARM CHOOSE ACTION gt NONE ZERO MODE SPAN MODE NO MODE lt NOX MODE SET BACKGROUND CAL TO LO SPAN RANGE AVG DIAGS ALARM AOUTS TO ZERO AOUTS TO FS CAL TO HI SPAN Operation Instrument Controls Menu 3 54 Model 42i High Level Instruction Manual Thermo Fisher Scientific Select Output Range The Select Output Range screen is used to select the hardware range for the selected analog output channel Possible ranges for the voltage outputs are 0 100 mV 0 1 0 5 0 10 V In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Output Config gt Select Channel gt Select Range Use and to move the cursor up and down Press to save the new range OUTPUT CHANNELS gt ALL VOLTAGE CHANNELS ALL CURRENT CHANNELS VOLTAGE CHANNEL 1 VOLTAGE CHANNEL 2 VOLTAGE CHANNEL 3 VOLTAGE CHANNEL 4 VOLTAGE CHANNEL 5 RANGE AVG DIAGS ALARM ANALOG OUTPUT CONFIG gt SELECT RANGE SET MINIMUM VALUE SET MAXIMUM V
160. ension on the cables 11 Replace the measurement bench by following previous steps in reverse Pump Replacement Use the following procedure to replace the pump see Figure 7 4 To rebuild the pump see Pump Rebuilding in the Preventive Maintenance chapter Equipment Required 110V pump or 220V pump Wrench 9 16 inch 1 Disconnect the pump power line from the AC power outlet Servicing Fan Replacement 7 10 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 7 4 Replacing the Pump 2 Remove both inlet and exhaust lines from the pump 3 Install the new pump by following the previous steps in reverse Fan Replacement Use the following procedure to replace the fan Figure 7 5 Equipment Required Fan Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the fan guard from the fan and remove the filter Captive Screws 2 Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing PMT Cooler and Reaction Chamber Assembly Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 11 3 Pull the power connectors off the fan 4 Remove the four fan mounting screws and remove the fan 5 Install a new fan following the previous steps in reverse Figure 7 5 Repl
161. eports that the PMT is on Send pmt status Receive pmt status on set pmt onoff These commands set the PMT on or off The example below turns the PMT off Send set pmt off Receive set pmt off ok save set save params This command stores all current parameters in FLASH memory It is important that each time instrument parameters are changed that this command be sent If changes are not saved they will be lost in the event of a power failure The example below saves the parameters to FLASH memory Send set save params Receive set save params ok time This command reports the current time 24 hour time The example below reports that the internal time is 2 15 30 pm Send time Receive time 14 15 30 set time hh mm ss hh hours mm minutes ss seconds This command sets the internal clock 24 hour time The example below sets the internal time to 2 15 pm C Link Protocol Commands Communications Configuration B 36 Model 42i High Level Instruction Manual Thermo Fisher Scientific Note if seconds are omitted the seconds default to 00 Send set time 14 15 Receive set time 14 15 ok Communications Configuration addr dns This command reports the TCP IP address for the domain name server Send addr dns Receive addr dns 192 168 1 1 set addr dns address This command sets the domain name server address where address consists of four numbers ranging from 0 255 inclusive separated by
162. equirements the factory should be consulted Equipment Required A zero air source free of contaminants such as NO NO2 and O3 is required for dilution calibration and gas phase titration This can be a cylinder of zero gas a scrubbed compressed air source or room air depending on the concentration of NOx to be measured and the level of NOx in the ambient area Pre Calibration Use the following procedure before calibrating the Model 42i High Level For detailed information about the menu parameters and the icons used in these procedures see the Operation chapter Note The calibration and calibration check duration times should be long enough to account for the transition purge process when switching from sample to zero and from zero to span This transition time is the time required to purge the existing air Depending on the plumbing configuration and the instrument data from approximately the first minute of a zero calibration or check should be disregarded because of residual sample air Also data from approximately the first minute of a span calibration or check should be disregarded because the span is mixing with the residual zero air 1 Allow the instrument to warm up and stabilize 2 Be sure the ozonator is ON If the ozonator is not ON a Press to display the Main Menu then choose Instrument Controls gt Ozonator b Press to toggle the ozonator ON c Press to return to the Run screen Calibr
163. er RS 232 485 RTU protocol as well as TCP IP over Ethernet The MODBUS Commands that are implemented are explained in detail in this document The MODBUS protocol support for the iSeries enables the user to perform the functions of reading the various concentrations and other analog values or variables read the status of the digital outputs of the analyzer and to trigger or simulate the activation of a digital input to the instrument This is achieved by using the supported MODBUS commands listed below For details of the Model 42i High Level MODBUS Protocol specification see the following topics Serial Communication Parameters on page C 2 describes the parameters used to support MODBUS RTU protocol TCP Communication Parameters on page C 2 describes the parameters used for TCP connection Application Data Unit Definition on page C 2 describes the formats used over serial and TCP IP Function Codes on page C 3 describes the various function codes supported by the instrument MODBUS Commands Supported on page C 8 lists the MODBUS commands supported in Table C 1 through Table C 3 Additional information on the MODBUS protocol can be obtained at http www modbus org References are from MODBUS Application Protocol Specification V1 1a MODBUS IDA June 4 2004 MODBUS Protocol Serial Communication Parameters C 2 42i High Level Instruction Manual Thermo Fisher Scientific
164. ermo Fisher Scientific Model 42i High Level Instruction Manual 3 85 The pressure sensor s zero counts and span slope are displayed on the menu In the Main Menu choose Service gt Pressure Calibration Calibrate Pressure Zero The Calibrate Pressure Zero screen calibrates the pressure sensor at zero pressure Note A vacuum pump must be connected to the pressure sensor before performing the zero calibration In the Main Menu choose Service gt Pressure Calibration gt Zero Press to save the current pressure reading as the zero reading Calibrate Pressure Span The Calibrate Pressure Span screen allows the user to view and set the pressure sensor calibration span point WARNING This adjustment should only be performed by an instrument service technician PRESSURE SENSOR CAL gt ZERO 72 SPAN 1 1447 SET DEFAULTS RANGE AVG DIAGS ALARM CALIBRATE PRESSURE ZERO CURRENTLY 33 8 mmHg SET TO 0 0 mmHg CONNECT VACUUM PUMP AND SAVE ZERO PRESSURE RANGE AVG DIAGS ALARM Operation Service Menu 3 86 Model 42i High Level Instruction Manual Thermo Fisher Scientific Note The plumbing going to the pressure sensor should be disconnected so the sensor is reading ambient pressure before performing the span calibration The operator should use an independent barometer to measure the ambient pressure and enter the value on this screen before calibrating In the Main Menu choose Service gt Pressure
165. ero valve option and is in SAMPLE mode Other modes appear in the same area of the display as ZERO or SPAN For more information about the optional solenoid valves see Chapter 9 Optional Equipment When operating in dual or auto range mode two sets of coefficients are used to calculate the NO NO2 NOx LOW and HIGH concentrations Also two averaging times are used one for each range The title bar indicates which range concentrations are displayed The words LOW RANGE CONCENTRATION on the top of the display indicates that the low concentration is displayed The display shows as default the low concentrations In dual range mode pressing the and arrows will toggle between high and low concentrations The example below shows the Run screen in single range mode Operation Software Overview Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 7 Main Menu The Main Menu contains a number of submenus Instrument parameters and features are divided into these submenus according to their function The concentration appears above the main menu and submenus in every screen as shown below The Service menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode later in this chapter Use and to move the cursor up and down Press to select a choice Press to return to the Main Menu or to return to the
166. ers are normally closed set relay open set relay open value set relay closed set relay closed value These commands set the relay logic to normally open or closed for relay number value where value is the relay between 1 and 16 The example below sets the relay no 1 logic to normally open Note if the command is sent without an appended relay number then all the relays are assigned the set logic of normally open closed Send set relay open 1 Receive set relay open 1 ok Record Layout Definition The Erec Lrec and Srec Layouts contain the following A format specifier for parsing ASCII responses A format specifier for parsing binary responses In addition to these the Erec Layout contains A format specifier for producing the front panel displays In operation values are read in using either the ASCII or binary format specifiers and converted to uniform internal representations 32 bit floats or 32 bit integers These values are converted into text for display on the screen using the format specifier for the front panel display Normally the specifier used to parse a particular datum from the input stream will be strongly related to the specifier used to display it e g all of the floating point inputs will be displayed with an f output specifier and all of the integer inputs will be displayed with a d specifier C Link Protocol Commands Record Layout Definition Thermo Fisher Scientific Model 42i
167. esent must match the Instrument Address Additional space can be present after the lt address gt If the received command does not satisfy the above formats or if the lt address gt does not match the Instrument Address the command is ignored This is a sample command to switch the instrument to zero mode instrument id 5 lt STX gt ST005 lt SP gt N lt CR gt This command DA initiates a data transfer from the instrument The instrument responds with measurement data which depends on the range mode and is listed in Measurements reported in response to DA command below The command structure for a data query command is as follows lt STX gt DA lt address gt lt ETX gt lt BCC gt The lt address gt is optional which means it can be left out completely The lt address gt if present must match the Instrument Address Additional space can be present after the lt address gt If the lt address gt is left out then no space is allowed in the query string A command with no address is also a valid command The following are the different acceptable formats of the DA command with Instrument Address 5 lt STX gt DA lt CR gt lt STX gt DA005 lt CR gt lt STX gt DA lt SP gt lt SP gt 5 lt ETX gt lt BCC gt lt STX gt DA lt ETX gt lt BCC gt The data query string is valid and will be answered with data transmission only if the command starts with lt STX gt which is followed by the characters DA and the lt
168. et dout 4 11 open Receive set dout 4 11 open ok dtoa channel This reports the outputs of the 6 or 12 digital to analog converters according to Table B 11 The example below shows that the DAC 1 is 97 7 full scale Send dtoa 1 Receive dtoa 1 97 7 Note All channel ranges are user definable If any customization has been made to the analog output configuration the default selections may not apply Table B 11 Default Output Assignment D to A Function Single Range Dual Range Autorange 1 Voltage Output NO High NO High Low NO 2 Voltage Output NO2 High NO2 High Low NO2 3 Voltage Output NOx High NOx High Low NOx 4 Voltage Output Not Assigned Low NO Range Status 5 Voltage Output Not Assigned Low NO2 Not Assigned 6 Voltage Output Not Assigned Low NOx Not Assigned 7 Current Output NO High NO High Low NO 8 Current Output NO2 High NO2 High Low NO2 9 Current Output NOx High NOx High Low NOx C Link Protocol Commands I O Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 43 list var aout list var dout list var din These commands report the list of index numbers and the variables associated with that index number available for selection in the current mode determined by single dual auto gas mode no nox or no nox for analog output digital output and digital inputs The index number is used to insert the variable in a field location in a list
169. ethernet connection Figure 1 1 Model 42i High Level Flow Schematic shown with bypass flow option Specifications Table 1 1 Model 42i High Level Specifications Preset ranges 0 10 20 50 100 200 500 1000 2000 5000 ppm 0 20 50 100 200 500 1000 2000 5000 7500 mg m3 Custom ranges 0 10 to 5000 ppm 0 20 to 7500 mg m3 Zero noise 0 025 ppm Lower detectable limit 0 050 ppm Zero drift 24 hour 0 050 ppm Span drift 24 hour 1 full scale Response time in manual mode 2 5 seconds NO 5 0 seconds NOx Vacuum 28 5 Hg Linearity 1 full scale Sample flow rate 25 cc min Bypass flow rate option 250 1100 cc min Introduction Specifications 1 4 42i High Level Instruction Manual Thermo Fisher Scientific Operating temperature 15 35 C may be safely operated over the range of 0 45 C Power requirements 100 VAC 50 60 Hz 115 VAC 50 60 Hz 220 240 VAC 50 60 Hz 500 watts Physical dimensions 16 75 W X 8 62 H X 23 D Weight Approximately 70 lbs including external pump Analog outputs 6 voltage outputs 0 100 mV 1 V 5 V 10 V User selectable 5 of full scale over under range 12 bit resolution user selectable for measurement input Digital outputs 1 power fail relay Form C 10 digital relays Form A user selectable alarm output relay logic 100 mA 200 VDC Digital inputs 16 digital inputs user select programmable TTL lev
170. f 0 500 ozonf 0 000 pmtv 116 11 04 02 22 03 flags 54089100 no 8421E 1 nox 8457E 1 lono 6477E 1 lonox 6505E 1 pres 131 5 pmtt 53 1 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 05 02 22 03 flags 54089100 no 8440E 1 nox 8456E 1 lono 6492E 1 lonox 6505E 1 pres 131 5 pmtt 53 2 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 06 02 22 03 flags 54089100 no 8432E 1 nox 8483E 1 lono 6486E 1 lonox 6525E 1 pres 133 0 pmtt 53 0 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 11 07 02 22 03 flags 54089100 no 8442E 1 nox 8383E 1 lono 6494E 1 lonox 6449E 1 pres 131 5 pmtt 53 1 intt 80 0 rctt 80 0 convt 61 smplf 0 500 ozonf 0 000 pmtv 116 where pmtv PMT Voltage pmtt PMT Temperature intt Internal Temperature rctt Reaction Chamber Temperature convt NO2 Converter Temperature smplf Sample Flow ozonf Ozonator Flow pres Pressure C Link Protocol Commands Datalogging B 20 Model 42i High Level Instruction Manual Thermo Fisher Scientific erec format srec format lrec format These commands report the output format for long and short records and dynamic data in various formats such as ASCII without text ASCII with text or binary The example below shows the output format for long records is ASCII with text according to Table B 4 Send lrec format Receive lrec format 1 set erec format format set lrec format format set srec format format These commands set the output format
171. f the bottom support 4 Replace the front panel board by following previous steps in reverse Figure 7 21 Replacing the Front Panel Board and the LCD Module LCD Module Replacement Use the following procedure to replace the LCD module Figure 7 21 Equipment Required LCD module Philips screwdriver Ribbon Cables 3 Two Wire Connector Mounting Studs 2 Bottom Support LCD Module Screws 2 Front Panel Board LCD Module Retaining Screw CAUTION If the LCD panel breaks do not to let the liquid crystal contact your skin or clothes If the liquid crystal contacts your skin or clothes wash it off immediately using soap and water Servicing LCD Module Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 45 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the two screws from right side of LCD module viewed front front 3 Disconnect the ribbon cable and the two wire connector from the front panel board 4 Loosen left side retaining screw viewed from front and slide the LCD module out towards the right and rear of the instrument 5 Replace the LCD module by following previous steps in reverse Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Do not remove the panel or frame from the module The
172. for long and short records and dynamic data according to Table B 4 The example below sets the long record output format to ASCII with text Send set lrec format 1 Receive set lrec format 1 ok erec layout lrec layout srec layout These commands reports the layout string indicating the data formats for data that is sent out in response to the erec lrec srec and related commands The example below shows a typical response For details on how to interpret the strings see Record Layout Definition later in this appendix Send lrec layout Receive lrec layout s s lx f f f f f f f f f f f f t D L ffffffffffff flags no nox hino hinox pres pmtt intt rctt convt smplf ozonf pmtv Table B 4 Record Output Formats Format Output Format 0 ASCII no text 1 ASCII with text 2 binary data C Link Protocol Commands Datalogging Thermo Fisher Scientific Model 42i High Level Instruction Manual B 21 lrec mem size srec mem size These commands report the long and short records that can be stored with the current settings and the number of blocks reserved for long and short records To calculate the number of short records per block add 2 to the number of records and then divide by the number of blocks The example below shows that 7 blocks were reserved for long records and the maximum number of long records that can be stored in memory is 1426 Send lrec mem size Receive lrec mem size 1426 recs 7 blo
173. format Reports sets erec format ASCII or binary B 20 erec layout Reports current layout of erec data B 20 flags Reports 8 hexadecimal digits or flags that represent the status of the ozonator PMT gas mode and alarms B 11 flow Reports current measured flow B 10 format Reports sets current reply termination format B 38 gas mode Reports current mode of sample zero or span B 31 gas unit Reports sets current gas units B 31 he help Simulates pressing help pushbutton B 27 high avg time Reports sets high range averaging time B 9 high no Reports NO concentration calculated with high range coefficients B 10 high no coef Reports sets high range NO coefficients B 25 high no gas Reports sets high range NO span gas concentration B 25 high no2 Reports NO2 concentration calculated with high range coefficients B 10 high no2 coef Reports sets high range NO2 coefficients B 25 high no2 gas Reports sets high range NO2 span gas concentration B 25 high nox Reports NOx concentration calculated with high range coefficients B 10 Table B 1 C Link Protocol Commands continued Command Description Page C Link Protocol Commands Commands B 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific high nox coef Reports sets high range NOx coefficients B 25 high nox gas Reports high range NOx span gas concentration B 25 high range no Reports selects current NO high range B 29
174. ft or right Use and to increment or decrement the numeric value Press to calculate and save the new coefficient based on the entered span concentration CALIBRATE NO NO 79 1 SPAN CONC 00000801 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Calibration Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 25 Calibrate Pressure The Calibrate Pressure screen is used to set the calibration pressure The calibration pressure should be set only when calibrating the instrument In the Main Menu choose Calibration gt Calibrate Pressure Press to save the current chamber as the new calibration pressure Zero Span Check The Zero Span Check menu is available with the zero span valve option It is used to program the instrument to perform fully automated zero and span check or adjustments Total Duration Hour is the sum of zero span and purge duration minutes Zero and Span Calibration Reset are toggle items that change between yes or no when selected and displayed if auto calibration is installed In the Main Menu choose Calibration gt Zero Span Check CALIBRATE PRESSURE CUR CAL PRES 35 0 mmHg CURRENT PRES 33 8 mmHg SAVE CURRENT PRESSURE AS CAL PRESSURE RANGE AVG DIAGS ALARM ZERO SPAN CHECK gt NEXT TIME 01Jan05 12 00 PERIOD HR 24 TOTAL DURATION HR 1 5 ZERO DURATION MIN 30 SPAN DURATION MIN 30 PURGE DURATION MIN 30 ZERO SPAN A
175. gisters for 42i High Level C 9 Write Coils for 42i High Level C 10 Operating Status for Model 42i High Level D 7 Error Status for Model 42i High Level D 7 Tables xiv Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Model 42i High Level Instruction Manual xv About This Manual This manual provides information about operating maintaining and servicing the analyzer It also contains important alerts to ensure safe operation and prevent equipment damage The manual is organized into the following chapters and appendices to provide direct access to specific operation and service information Chapter 1 Introduction provides an overview of product features describes the principles of operation and lists the specifications Chapter 2 Installation describes how to unpack setup and startup the analyzer Chapter 3 Operation describes the front panel display the front panel pushbuttons and the menu driven software Chapter 4 Calibration provides the procedures for calibrating the analyzer and describes the required equipment Chapter 5 Preventive Maintenance provides maintenance procedures to ensure reliable and consistent i
176. gnal 11 LD1 LCD Signal 12 LD6 LCD Signal 13 LD2 LCD Signal 14 LD7 LCD Signal 15 LD3 LCD Signal 16 LCD Bias Voltage 17 5V 18 Ground 19 Ground 20 LCD_ONOFF LCD Signal 21 Keypad Row 2 Input 22 Keypad Row 1 Input 23 Keypad Row 4 Input 24 Keypad Row 3 Input 25 Keypad Col 2 Select 26 Keypad Col 1 Select 27 Keypad Col 4 Select 28 Keypad Col 3 Select 29 Ground 30 Ground 31 Ground Troubleshooting Connector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 17 32 Ground 33 24V 34 24V LCD DATA J2 1 LFLM_5V LCD Signal 2 LLP_5V LCD Signal 3 LCLK_5V LCD Signal 4 LCD_ONOFF_5V LCD Signal 5 5V 6 Ground 7 LCD Bias Voltage 8 LD0_5V LCD Signal 9 LD1_5V LCD Signal 10 LD2_5V LCD Signal 11 LD3_5V LCD Signal 12 LD4_5V LCD Signal 13 LD5_5V LCD Signal 14 LD6_5V LCD Signal 15 LD7_5V LCD Signal 16 Ground KEYBOARD J3 1 Keypad Row 1 Input 2 Keypad Row 2 Input 3 Keypad Row 3 Input 4 Keypad Row 4 Input 5 Keypad Col 1 Select 6 Keypad Col 2 Select 7 Keypad Col 3 Select 8 Keypad Col 4 Select LCD BACKLIGHT J4 1 LCD Backlight Voltage 1 2 NC 3 NC 4 LCD Backlight Voltage 2 Table 6 5 Front Panel Board Connector Pin Diagram continued Connector Label Reference Designator Pin
177. gnal is actually the combination of electrical offsets PMT dark current and trace substances undergoing chemiluminescence Before the analyzer sets the NO and NOx readings to zero it stores these values as the NO and NOx background corrections respectively The NO2 background correction is determined from the NO and NOx background corrections and is not displayed NO and NOx background corrections are typically below 0 030 ppm CALIBRATION FACTORS CALIBRATION FACTORS gt NO BKG 0 0 gt NO BKG 0 0 NOx BKG 0 0 NOx BKG 0 0 NO COEF 1 000 HI NO COEF 1 000 NO2 COEF 1 000 HI NO2COEF 1 000 NOx COEF 1 000 HI NOx COEF 1 000 CAL PRESSURE 35 0 mmHg LO NO COEF 1 000 RESET USER CAL DEFAULTS LO NO2 COEF 1 000 RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM LO NOx COEF 1 000 CAL PRESSURE 35 0 mmHg RESET USER CAL DEFAULTS Operation Calibration Factors Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 19 The NO and NOx Background screens are used to perform a manual adjustment of the instruments zero background Before performing a background adjustment allow the analyzer to sample zero air until stable readings are obtained The NO channel should be adjusted first Both the NO and NOx Background screens operate the same way Therefore the following description of the NO background screen applies to the NOx background screen as well The first line of the display shows the current NO reading The second line of the d
178. ground and Set NOx Background screens operate the same way and the following procedure also applies to the Set NOx background screen For detailed information about the menu parameters and the icons used in these procedures see the Operation chapter 1 Follow the Pre Calibration procedure described previously in this chapter 2 Introduce zero air to the SAMPLE bulkhead and allow the analyzer to sample zero air until the NO NOx and NO2 responses stabilize 3 When the responses stabilize from the Main Menu choose Calibration gt Cal NO Background 4 The Set NO Background screen displays the current NO background and NO concentration 5 Press to set the NO background to zero 6 Press to return to the Run screen Calibration Calibration in Dual Range and Auto Range Mode Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 13 7 Repeat Steps 3 through 6 selecting Cal NOx Background to set the NOx background to zero Calibrate Low NO Use the following procedure to calibrate NO channel to the NO calibration gas 1 Disconnect the source of zero air from the SAMPLE bulkhead In its place connect a source of NO calibration gas of about 80 of the low NO full scale range 2 Allow the analyzer to sample the low NO calibration gas until the NO NO2 and NOx readings stabilize 3 When the responses are stabile from the Main Menu choose Calibration gt Cal Lo NO Coefficient 4 The L
179. gt Datalogging Settings gt Select Content gt Select Field gt Other Measurements Use and to move the cursor up and down Press to select a new choice CONCENTRATIONS gt NONE NO lt NO2 NOx LO NO LO NO2 LO NOx RANGE AVG DIAGS ALARM HI NO HI NO2 HI NOx RANGE NOX Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 37 Analog Inputs The Analog Inputs screen allows the user to select the output signal none or analog input 1 8 that is tied to the selected field item The selected item is shown by lt after it Note that at this point pressing indicates that these are proposed changes as opposed to implemented changes To change the selected record format and erase record log file data see Commit Content below In the Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content gt Select Field gt Analog Inputs Use and to move the cursor up and down Press to select a new choice Commit Content The Commit Content screen is used to save the selected output signal that is tied to the selected field item For more information about selecting the analog output signal group choices see Select Content above In the Main Menu choose Instrument Controls gt Datalogging Settings gt Commit Content OTHER MEASUREMENTS gt NONE INT TEMP CHAMBER TEMP COOLER TEMP NO2 CON
180. gt PROGRAM VERSION VOLTAGES TEMPERATURES PRESSURE FLOW ANALOG INPUT READINGS ANALOG INPUT VOLTAGES RANGE AVG DIAGS ALARM DIGITAL INPUTS RELAY STATES TEST ANALOG OUTPUTS INSTRUMENT CONFIGURATION CONTACT INFORMATION Operation Diagnostics Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 65 Program Version The Program Version screen read only shows the version number of the program installed Prior to contacting the factory with any questions regarding the instrument please note the program version number In the Main Menu choose Diagnostics gt Program Version Voltages The Voltages menu displays the current diagnostic voltage readings This screen enables the power supply to be quickly read for low or fluctuating voltages without having to use a voltage meter The I O board is displayed if the I O expansion board option is installed In the Main Menu choose Diagnostics gt Voltages Motherboard Voltages The Motherboard screen read only is used to display the current voltage readings on the motherboard In the Main Menu choose Diagnostics gt Voltages gt Motherboard Voltages PROGRAM VERSION PRODUCT MODEL 42iHL VERSION 01 00 01 074 RANGE AVG DIAGS ALARM VOLTAGES gt MOTHERBOARD INTERFACE BOARD I O BOARD RANGE AVG DIAGS ALARM Operation Diagnostics Menu 3 66 Model 42i High Level Instruction Manual Thermo Fisher Scientific Interface Board Voltages
181. hoose Cal NOx Coefficient 8 Verify that the NOx calibration gas concentration is the same as the NO calibration gas concentration plus any known NO2 impurity The NOx line of the Calibrate NOx screen displays the current NOx concentration The SPAN CONC line of the display is where you enter the NOx calibration gas concentration Use and to move the cursor left and right and use and to increment and decrement each digit Press to calibrate the NOx channel to the NOx calibration gas 9 Press to return to the Run screen The exact NOx concentration is calculated from Where NOx OUT diluted NOx concentration at the output manifold ppm NO2 IMP concentration of NO2 impurity in the standard NO cylinder ppm Z 100 x URL NO scale Response Recorder NO OUT F F F NO NO x F NO D O NO IMP 2 STD NO OUT x Calibration Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 9 The NOx recorder response will equal Where URL Nominal upper range limit of the NOx channel ppm Record the NOx concentration and the analyzer s NOx response Preparing NO NOx and NO2 Calibration Curves Use the following procedure to prepare the NO NOx and NO2 calibration curves 1 Generate several additional NO and NOx concentrations by decreasing FNO or increasing FD 2 For each concentration generated calculate the exact NO
182. hoose Instrument Controls gt PMT Supply Press to toggle and set the PMT supply on or off Auto Manual Mode The Auto Manual Mode screen allows selection of the automatic mode NO NOx NO mode manual NO or NOx mode manual NOx The auto mode switches the mode solenoid valve automatically on a 10 second cycle so that NO NO2 and NOx concentrations are determined The manual NO mode puts the mode solenoid valve into the open position so that the sample gas bypasses the NO2 to NO converter Therefore only the NO concentration is determined The manual NOx mode puts the mode solenoid valve into the closed position so that the sample gas passes through the NO2 to NO converter Therefore only the NOx concentration is determined In the manual modes additional averaging times of 1 2 and 5 seconds are available from the Averaging Time screen In the Main Menu choose Instrument Controls gt Auto Manual Mode Use and to scroll through a list of choices OZONATOR CURRENTLY OFF SET TO ON TOGGLE VALUE RANGE AVG DIAGS ALARM PMT SUPPLY CURRENTLY OFF SET TO ON TOGGLE VALUE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 31 Press to save the new mode state Datalogging Settings The Datalogging Settings menu deals with datalogging In the Main Menu choose Instrument Controls gt Datalogging Settings Selec
183. hoose Service gt Analog Input Calibration gt Select Channel gt Calibrate Zero Hook up a voltage source of 0 V to the analog input channel Press to save the value WARNING This adjustment should only be performed by an instrument service technician ANALOG INPUT CAL gt INPUT CHANNEL 1 INPUT CHANNEL 2 INPUT CHANNEL 3 INPUT CHANNEL 4 INPUT CHANNEL 5 INPUT CHANNEL 6 INPUT CHANNEL 7 RANGE AVG DIAGS ALARM ANALOG INPUT CAL gt CALIBRATE ZERO CALIBRATE FULL SCALE RANGE AVG DIAGS ALARM Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 95 Analog Input Calibrate Full Scale The Analog Input Calibration Full Scale screen allows the user to calibrate the full scale state of the selected analog input In the Main Menu choose Service gt Analog Input Calibration gt Select Channel gt Calibrate Full Scale Hook up a voltage source of 10 V to the analog input channel Use and to increment or decrement the numeric value Press to save the value Ozonator Safety The Ozonator Safety screen is used to turn the ozonator safety feature on and off If the ozonator safety is turned off the ozonator will always be on even if there is no flow or the converter is not up to temperature The ozonator safety screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter
184. ight cable is required and when the connector is male a null modem cable is required Data Format 1200 2400 4800 9600 19200 38400 57600 or 115200 BAUD 8 data bits 1 stop bit no parity System Description I O Components 8 12 Model 42i High Level Instruction Manual Thermo Fisher Scientific All responses are terminated with a carriage return hex 0D Refer to Table 8 1 for the DB9 connector pin configuration RS 485 Connection The instrument uses a four wire RS 485 configuration with automatic flow control SD Refer to Table 8 2 for the DB9 connector pin configuration Ethernet Connection An RJ45 connector is used for the 10Mbs Ethernet connection supporting TCP IP communications via standard IPV4 addressing The IP address may be configured for static addressing or dynamic addressing set using a DHCP server Any serial port protocols may be accessed over Ethernet in addition to the serial port External Accessory Connector The external accessory connector is not used Note This port is used in other models to communicate with smart external devices that may be mounted hundreds of feet from the analyzer using an RS 485 electrical interface Table 8 1 RS 232 DB Connector Pin Configurations DB9 Pin Function 2 RX 3 TX 7 RTS 8 CTS 5 Ground Table 8 2 RS 485 DB Connector Pin Configuration DB9 Pin Function 2 receive 8 receive 7 transmit 3 transmit 5 groun
185. included lt measured value gt is the concentration value in currently selected gas units represented as exponential representation with 4 characters mantissa and 2 characters exponent each with sign Mantissa sign and 4 digits The decimal point is assumed to be after the first digit and is not transmitted Exponent sign and 2 digits Example 5384000 0 is represented as 5384 06 0 04567 is represented as 4567 02 lt status gt is formed by lt operating status gt and lt error status gt and separated by a space i e lt operating status gt lt SP gt lt error status gt Each of the two lt operating status gt and lt error status gt are formed by two characters each representing a 2 digit hex number which is one byte 8 Bits operation status and one byte 8 Bits error status These two bytes contain the information about the main operating conditions of the instrument at that instant For details on how to interpret the status bytes refer to Table D 1 and Table D 2 below lt SFKT gt is the space provided for future use for special function it currently contains a string of ten 0 s i e lt 0000000000 gt Geysitech Bayern Hessen Protocol Geysitech Commands D 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Example Geysitech Protocol with transmission of three concentrations Instrument ID is 1 Operation Status is 03 Error Status is 04 Data Query String lt
186. ion is detected Each board has a specific address that is used to identify to the firmware what functions are supported on that board This address is also used for the communications between the low level processors and the high level processor Every tenth of a second the frequency counters analog I O and digital I O are read and written to by the low level processor The counters are accumulated over the past second and the analog inputs are averaged over that second The high level processor polls the low level processors once per second to exchange the measurement and control data Monitoring Signals Signals are gathered from the low level processors once per second and then processed by the high level processor to produce the final measurement values The one second accumulated counts representing the NO NOx are accumulated and reported for the user specified averaging time If this averaging time is greater than ten seconds the measurement is reported every 10 seconds The one second average of the other analog inputs are reported directly no additional signal conditioning is performed by the high level processor System Description Software Thermo Fisher Scientific Model 42i High Level Instruction Manual 8 5 In auto mode every ten seconds the NO NOx solenoid switches and the processor waits three seconds for the reaction chamber to flush and stabilize After those three seconds it accumulates the signal counts for seven
187. ion of NO and NO2 usually generated via an NIST traceable NO working standard and a GPT system to the SAMPLE bulkhead or SPAN bulkhead for instruments equipped with the zero span and sample solenoid valve option on the rear panel 4 Allow the instrument to sample the calibration gas until a stable reading is obtained on the NO NO2 and NOx channels If the calibration has changed by more than 10 a new multipoint calibration curve should be generated 5 When the calibration check has been completed record the NO NO2 and NOx values 6 Reconnect the analyzer sample line to the SAMPLE bulkhead Calibration Zero and Span Check 4 18 Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Model 42i High Level Instruction Manual 5 1 Chapter 5 Preventive Maintenance This chapter describes the periodic maintenance procedures that should be performed on the instrument to ensure proper operation Since usage and environmental conditions vary greatly you should inspect the components frequently until an appropriate maintenance schedule is determined This chapter includes the following maintenance information and replacement procedures Safety Precautions on page 5 1 Cleaning the Outside Case on page 5 2 Ozonator Air Feed Drying Column Replacement on page 5 2 Capillaries Inspection and Replacement on page 5 2 Thermoelectric Cooler
188. is adjustment should only be performed by an instrument service technician SET PMT VOLTAGE SET PMT 750 0 V COUNTS 2254 INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Service Menu 3 84 Model 42i High Level Instruction Manual Thermo Fisher Scientific Converter Set Temperature The Converter Set Temperature screen is used to change the converter set temperature The converter set temperature reading is updated every second The converter set temperature screen is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter In the Main Menu choose Service gt Converter Set Temperature Use and to increment or decrement the numeric values Press to save the new set temperature Pressure Calibration The Pressure Calibration menu is used to calibrate the pressure sensor to zero span or restore factory default values The pressure calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in this chapter SINGLE DUAL AUTO RANGE CURRENTLY SINGLE SET TO DUAL CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM WARNING This adjustment should only be performed by an instrument service technician SET CONVERTER TEMP CURRENTLY 625 oC SET TO 625 oC INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Service Menu Th
189. is command sets the screen s level of contrast according to Table B 7 The example below sets the contrast level to 50 Send set contrast 5 Receive set contrast 5 ok C Link Protocol Commands Hardware Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 33 conv set temp This command reports the temperature that the NO2 converter is set to The example below reports that the converter temperature is set to 625 C Send conv set temp Receive conv set temp 625 deg C set conv set temp value This command sets the temperature that the NO2 converter is set to where value is an integer representing degrees C The example below sets the converter temperature to 625 C Send set conv set temp Receive set conv set temp 625 deg C ok date This command reports the current date The example below reports the date as December 1 2004 Send date Receive date 12 01 04 set date mm dd yy mm month dd day yy year Table B 7 Contrast Levels Level Contrast Level 0 0 1 10 2 20 3 30 4 40 5 50 6 60 7 70 8 80 9 90 10 100 C Link Protocol Commands Hardware Configuration B 34 Model 42i High Level Instruction Manual Thermo Fisher Scientific This command sets the date of the analyzer s internal clock The example below sets the date to March 19 2005 Send set date 03 19 05 Receive set date 03 19 05 ok set default param
190. isher Scientific Model 42i High Level Instruction Manual 3 47 IP Address The IP Address screen is used to edit the IP address In the Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt IP Address Use and to move and change the value of the IP address Press to save the new address Netmask The Netmask screen is used to edit the netmask address In the Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt Netmask Use and to move and change the value of the netmask Press to save the new address DHCP CURRENTLY OFF SET TO ON TOGGLE VALUE CYCLE POWER TO CHANGE DHCP RANGE AVG DIAGS ALARM IP ADDRESS CURRENT 192 168 1 15 SET TO 192 168 1 15 1 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 48 Model 42i High Level Instruction Manual Thermo Fisher Scientific Gateway The Gateway screen is used to edit the gateway address In the Main Menu choose Instrument Controls gt Communication Settings gt TCP IP Settings gt Gateway Use and to move and change the value of the gateway address Press to save the new address Host Name The host name screen is used to edit the host name When DHCP is enabled this name is reported to the DHCP server In the Main Menu choose Instrument Controls gt Commu
191. isplay shows the NO background correction that is stored in memory The NO background correction is a value expressed in the current gas units that is subtracted from the NO reading to produce the NO reading that is displayed In the example below the analyzer is displaying 44 ppm of NO while sampling zero air A background correction of 0 0 ppm means that 0 ppm is being subtracted from the NO concentration being displayed Therefore the background correction must be increased to 44 ppm in order for the NO reading to be at 0 ppm i e a NO reading of 44 ppm minus a NO background reading of 44 ppm gives the corrected NO reading of 0 ppm To set the NO reading in the example below to zero use to increment the NO background correction to 44 ppm As the NO background correction is increased the NO concentration is decreased Note that at this point pressing and however has no affect on the analog outputs or the stored NO background correction of 0 0 ppm A question mark following both the NO reading and the NO background correction indicates that these are proposed changes as opposed to implemented changes To escape this screen without saving any changes press to return to the Calibration Factors menu or to return to the Run screen Press to actually set the NO reading to 0 ppm and store the new background correction of 44 ppm Then the question mark prompt beside the NO reading disappears In the Main Menu choose Calibratio
192. ith dry air or nitrogen prior to installing reaction chamber 8 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter PMT Cooler O Ring 2 034 Red Filter Viton Spacer Quartz Window O Ring 2 127 Reaction Chamber Rear Reaction Chamber Front Servicing NO2 to NO Converter Replacement 7 20 Model 42i High Level Instruction Manual Thermo Fisher Scientific NO2 to NO Converter Replacement Use the following procedure to replace the converter Figure 7 10 Equipment Required NO2 to NO Converter Wrench 7 16 inch Wrench 9 16 inch Wrench 1 2 inch Wrench 5 8 inch Screwdriver Nut driver 1 4 inch Nut driver 5 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Allow converter to cool to room temperature to prevent contact with heated components 3 Disconnect plumbing at converter inlet and outlet 4 Disconnect thermocouple leads and heater connector from temperature control board CAUTION Avoid contact with converter heated components Allow converter to cool to room temperature before handling converter components Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing NO2 to NO Converter Replacement Thermo Fisher Scientific Model
193. ith the instrument You should have a quality control plan where the frequency and the number of points required for calibration can be modified on the basis of calibration and zero and span check data collected over a period of time Note however that the EPA requires a minimum of one multipoint calibration per calendar quarter Such a quality control program is essential to ascertain the accuracy and reliability of the air quality data collected and to alert the user if the accuracy or reliability of the data should become unacceptable A compilation of this kind might include items such as dates of calibration atmospheric conditions calibration factors and other pertinent data Calibration Zero and Span Check Thermo Fisher Scientific Model 42i High Level Instruction Manual 4 17 Use the following procedure to perform a zero and span check 1 Connect the zero gas to the SAMPLE bulkhead in a standard instrument or to the ZERO bulkhead in a Model 42i High Level equipped with the zero span and sample solenoid valve option 2 Allow the instrument to sample zero gas until a stable reading is obtained on the NO NO2 and NOx channels then record the zero readings Unless the zero has changed by more than 0 010 ppm it is recommended that the zero not be adjusted If an adjustment larger than this is indicated due to a change in zero reading a new multipoint calibration curve should be generated 3 Attach a supply of known concentrat
194. ive set custom 1 range 55 5 ok range mode This command reports the current range mode Send range mode Receive range mode single set range mode mode This command sets the current range mode to single dual or auto The example below sets the range mode to single Send set range mode single Receive set range mode single ok 8 5 000 7 500 9 C1 C1 10 C2 C2 11 C3 C3 Table B 6 Operating Ranges continued Selection ppm mg m3 C Link Protocol Commands Measurement Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 31 gas mode This command reports the current mode of sample zero or span The example below reports that the gas mode is sample Send gas mode Receive gas mode sample set sample set zero set span These commands set the current gas mode to sample zero or span The example below sets the instrument to span mode that is the instrument is sampling span gas Send set span Receive set span ok gas unit This command reports the current gas units ppm or mg m3 The example reports that the gas unit is set to ppm Send gas unit Receive gas unit ppm set gas unit unit ppm mg m3 This command sets the gas units to ppm or mg m3 The example below sets the gas unit to mg m3 Send set gas unit mg m3 Receive set gas unit mg m3 ok meas mode This command reports which measurement mode NO NOx NO NOx is active The example
195. l 42i High Level Instruction Manual B 17 Datalogging clr records This command will clear all long and short records that have been saved Send clear records Receive clear records ok set clr lrecs set clr srecs These commands will clear only the long records or only the short records that have been saved The example below clears short records Send set clr srecs Receive set clr srecs ok list din list dout These commands report the current selection for the digital outputs in the format Output no Index number variable name active state The active state for digital outputs is open or closed The active state for digital inputs is high or low Send list dout Receive list dout output index variable state 1 35 CONC ALARM open 3 4 UNITS open 4 11 GEN ALARM closed 7 7 NO MODE open 8 8 NOX MODE open list lrec list srec list stream list sp These commands report the list of current selections for long record logging data short record logging data streaming data output or the scratch pad sp list The example below shows the list for streaming data output Send list stream Receive list stream field index variable x x time 1 1 no 2 2 no2 3 3 nox 4 18 intt 5 25 pres 6 26 smplf C Link Protocol Commands Datalogging B 18 Model 42i High Level Instruction Manual Thermo Fisher Scientific er xy lr xy sr xy x 0 1 Reply termination format see set format format command y 0 1
196. l are restricted to qualified service representatives If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired CAUTION Carefully observe the instructions in each procedure Avoid contact with converter heated components Allow converter to cool to room temperature before handling converter components Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Figure 7 1 If an antistatic wrist strap is not available be sure to touch a grounded metal object before touching any internal components When the instrument is unplugged the chassis is not at earth ground Handle all printed circuit boards by the edges Do Not point the photomultiplier tube at a light source This can permanently damage the tube Do not remove the LCD panel or frame from the LCD module The polarizing plate is very fragile handle it carefully Do not wipe the polarizing plate with a dry cloth it may easily scratch the plate Do not use alcohol acetone MEK or other Ketone based or aromatic solvents to clean the LCD module use a soft cloth moistened with a naphtha cleaning solvent Do not place the LCD module near organic solvents or corrosive gases Do not shake or jolt the LCD module Servicing Firmware Updates 7 4 Model 42i High
197. l be 0 through 3 The translation list shows the words which correspond to each input value the zeroth value appearing first 0 gt local 1 gt remote etc The selection list shows that only the first two values in this case are to be shown to the user when the button is pressed The T button indicates full translation input code to string and user selection number to output string C Link Protocol Commands Record Layout Definition Thermo Fisher Scientific Model 42i High Level Instruction Manual B 49 xC This is a line that starts a new column the xC or L Comp 6 11x off on Tset temp comp s n This shows that the bitfield end the second part of a bitfield specification is optional The bitfield will be one bit long starting in this case at the eleventh bit Background 7f 8Bd ddd set o3 bkg s n This shows the use of indirect precision specifiers for floating point displays The background value is taken from the 7th element and the precision specifier is taken from the 8th If the asterisk were not present it would indicate instead that 8 digits after the decimal point should be displayed C Link Protocol Commands Record Layout Definition B 50 Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific 42i High Level Instruction Manual C 1 Appendix C MODBUS Protocol This appendix provides a description of the MODBUS Protocol Interface and is supported both ov
198. l components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component WARNING The service procedures in this manual are restricted to qualified service representatives If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Servicing Ambient Temperature Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 37 1 Remove the instrument cover 2 Tape the thermistor plugged into the measurement interface board to a calibrated thermometer Figure 7 2 Note Since the thermistors are interchangeable to an accuracy of 0 2 C and have a value of 10K ohms at 25 C an alternate procedure is to connect an accurately known 10K resistor to the thermistor input AMB TEMP on the measurement interface board and enter the temperature reading A 1 C change corresponds to a 5 change in resistance thus this alternative procedure can be quite accurate as a check however it clearly is not NIST traceable 3 From the Main Menu press to scroll to Service gt press gt to scroll to Temperature Calibration gt and press The Calibrate Ambient Temperature screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt
199. le screen allows the user to calibrate the full scale state of the selected analog output The operator must connect a meter to the output and adjust output until it reads the value shown in the set output to field In the Main Menu choose Service gt Analog Out Calibration gt Select Channel gt Calibrate Full Scale Use and to increment or decrement the numeric value Press to save the value ANALOG OUTPUT CAL ZERO CONNECT METER TO OUTPUT SELECTED OUTPUT V1 SET TO 101 SAVE VALUE INC DEC SET OUTPUT TO 0 0 V RANGE AVG DIAGS ALARM ANALOG OUTPUT CAL SPAN CONNECT METER TO OUTPUT SELECTED OUTPUT V1 SET TO 3697 SAVE VALUE INC DEC SET OUTPUT TO 10 V RANGE AVG DIAGS ALARM Operation Service Menu 3 94 Model 42i High Level Instruction Manual Thermo Fisher Scientific Analog Input Calibration The Analog Input Calibration menu is a selection of 8 analog inputs if the I O expansion board option is installed to calibrate and allows the user to select the calibration action zero or span The analog input calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter In the Main Menu choose Service gt Analog Input Calibration Analog Input Calibrate Zero The Analog Input Calibrate Zero screen allows the user to calibrate the zero state of the selected analog input In the Main Menu c
200. log Voltage Output 4 35 Ground 36 Analog Voltage Output 6 37 Ground SER EN J7 1 Serial Enable Jumper 2 3 3V 24V IN J10 1 24V 2 Ground DIGITAL I O J14 1 5V 2 24V 3 24V 4 Ground 5 Ground 6 Ground 7 SPI Reset 8 SPI Input 9 SPI Output 10 SPI Board Select 11 SPI Clock EXT RS485 J15 1 RS485 to Rear Panel 2 RS485 to Rear Panel 3 5V 4 5V 5 5V 6 Ground Table 6 3 Motherboard Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Descriptions Troubleshooting Connector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 11 7 Ground 8 Ground 9 NC 10 NC 11 24V 12 24V 13 24V 14 24V 15 24V 24V MONITOR J17 1 24V Power Monitor 2 Ground FRONT PANEL BD J18 1 Ground 2 Ground 3 LCLK LCD Signal 4 Ground 5 Ground 6 LLP LCD Signal 7 LFLM LCD Signal 8 LD4 LCD Signal 9 LD0 LCD Signal 10 LD5 LCD Signal 11 LD1 LCD Signal 12 LD6 LCD Signal 13 LD2 LCD Signal 14 LD7 LCD Signal 15 LD3 LCD Signal 16 LCD Bias Voltage 17 5V 18 Ground 19 Ground 20 LCD_ONOFF LCD Signal 21 Keypad Row 2 Input Table 6 3 Motherboard Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Descriptions Tr
201. manual are restricted to qualified service representatives Servicing DC Power Supply Replacement 7 28 Model 42i High Level Instruction Manual Thermo Fisher Scientific 4 At the GAIN 100 screen use to increment the D A counts until the FREQ value matches or is slightly above within 50 counts the value noted in the previous step 5 Press to store the value The screen flashes Calculating Please Wait and Done Values Saved messages DC Power Supply Replacement Use the following procedure to replace the DC power supply Figure 7 14 Equipment Required DC power supply Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect all the power supply electrical connections Note connector locations to facilitate re connection 3 Loosen the captive screw securing the power supply to the chassis plate and lift out the power supply Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Analog Output Testing Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 29 Figure 7 14 Replacing the DC Power Supply 4 Turn the power supply upside down and remove the four retaining screws securing the power supply to the power supply plate and remove the power supply 5 To install the DC power supply follow th
202. ment has been designed to achieve a high level of reliability In the event of problems or failure the troubleshooting guidelines board level connection diagrams connector pin descriptions and testing procedures presented in this chapter should be helpful in isolating and identifying problems For additional fault location information refer to the Preventive Maintenance chapter in this manual The service mode in the Operation chapter includes parameters and functions that are useful when making adjustments or diagnosing problems The service mode includes some of the same information found in the Diagnostic menu however readings are updated every second in the service mode compared with every 10 seconds in the Diagnostics menu The Technical Support Department at Thermo Fisher Scientific can also be consulted in the event of problems See Service Locations at the end of this chapter for contact information In any correspondence with the factory please note both the serial number and program number of the instrument This chapter provides the following troubleshooting and service support information Safety Precautions on page 6 1 Troubleshooting Guides on page 6 2 Board Level Connection Diagrams on page 6 6 Connector Pin Descriptions on page 6 8 Service Locations on page 6 22 Safety Precautions Read the safety precautions in the Preface and the Ser
203. n Factors gt NO or NOx Background Use and to increment or decrement the proposed background value Press to save the new background Operation Calibration Factors Menu 3 20 Model 42i High Level Instruction Manual Thermo Fisher Scientific NO NO2 and NOx Coefficients The NO NO2 and NOx span coefficients are usually calculated by the instrument processor during calibration The span coefficients are used to correct the NO NO2 and NOx readings The NO and NOx span coefficients normally have values near 1 000 The NO2 span coefficient normally has a value between 0 95 and 1 050 The NO NO2 and NOx Coefficient screens allow the NO NO2 and NOx span coefficients to be manually changed while sampling span gas of known concentration The NO NO2 and NOx coefficient screens operate the same way Therefore the following description of the NO coefficient screen applies to the NO2 and NOx coefficient screens as well The display shows the current NO concentration reading The next line of the display shows the NO span coefficient that is stored in memory and is being used to correct the NO concentration Notice that as the span coefficient value is changed the current NO concentration reading on the above line also changes However no real changes are made to the value stored in memory until is pressed Only proposed changes as indicated by a question mark prompt are displayed until is pressed In dual or auto
204. n for EPA equivalency When pressure compensation is on the first line of the display represents the current pressure in the reaction chamber When pressure compensation is off the first line of the display shows the factory standard pressure of 35 mmHg In the Main Menu choose Instrument Controls gt Pressure Compensation Press to toggle and set the pressure compensation on or off TEMPERATURE COMPENSATION COMP TEMP 30 0 oC CURRENTLY OFF SET TO ON TOGGLE VALUE RANGE AVG DIAGS ALARM PRESSURE COMPENSATION COMP PRES 35 0 mmHg CURRENTLY OFF SET TO ON TOGGLE VALUE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 63 Screen Contrast The Screen Contrast screen is used to change the contrast of the display Intensities between 0 and 100 in increments of 10 are available Changing the screen contrast may be necessary if the instrument is operated at extreme temperatures In the Main Menu choose Instrument Controls gt Screen Contrast Use and to increment or decrement the screen contrast Press to accept a change Service Mode The Service Mode screen is used to turn the service mode on or off The service mode locks out any remote actions and includes parameters and functions that are useful when making adjustments or diagnosing the Model 42i High Level For more information about the service mode
205. n is used to change the instrument communication protocol for serial communications This does not affect communications over Ethernet because the protocols are processed simultaneously on different ports In the Main Menu choose Instrument Controls gt Communication Settings gt Communication Protocol Use and to scroll through a list of choices Press to save the new protocol INSTRUMENT ID CURRENTLY 42 SET TO 50 CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM COMMUNICATION PROTOCOL CURRENTLY CLINK SET TO STREAMING CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 43 Streaming Data Configuration The Streaming Data Configuration menu is used to allow for configuration of the 18 streaming data output items streaming interval current data format and current time The Choose Stream Data submenu displays a list of the analog signal group choices to choose from Choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board option is installed Note Add Labels and Prepend Timestamp are toggle items that change between yes or no when selected In the Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config Streaming Data Interval The Streaming Data Interval screen is used to adjust the streaming data interval The following i
206. n outlet of the appropriate voltage and frequency Startup Use the following procedure when starting the instrument Note It is best to turn the ozonator on and let the instrument run overnight before calibration in order to obtain the most accurate results 1 Plug the sample pump and the bypass pump if the bypass flow option is installed into an appropriate AC outlet 2 Turn the power ON 3 Allow 90 minutes for the instrument to stabilize 4 Set instrument parameters such as operating ranges and averaging times to appropriate settings For more information about instrument parameters see the Operation chapter 5 Before beginning actual monitoring perform a multipoint calibration as described in the Calibration chapter WARNING This instrument is supplied with a three wire grounding cord DO NOT alter this grounding system under any circumstances Installation Startup 2 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 1 Chapter 3 Operation This chapter describes the front panel display front panel pushbuttons and menu driven software Display on page 3 2 describes the LCD graphics display Pushbuttons on page 3 3 describes the various front panel pushbuttons and the expected key actions for each Software Overview on page 3 4 describes the menu driven software and submenus
207. nd 9600 19200 38400 57600 and 115200 are available In the Main Menu choose Instrument Controls gt Communication Settings gt Baud Rate Use and to scroll through a list of choices Press to save the new baud rate Instrument ID The Instrument ID screen allows the operator to edit the instrument ID The ID is used to identify the instrument when using the C Link or MODBUS protocols to control the instrument or collect data It may be necessary to edit the ID number if two or more of the same instrument are connected to one computer over the serial port Valid Instrument ID numbers are from 0 to 127 The Model 42i High Level has a default COMMUNICATION SETTINGS gt BAUD RATE INSTRUMENT ID COMMUNICATION PROTOCOL STREAMING DATA CONFIG RS 232 RS 485 SELECTION TCP IP SETTINGS RANGE AVG DIAGS ALARM BAUD RATE CURRENTLY 9600 SET TO 19200 CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 42 Model 42i High Level Instruction Manual Thermo Fisher Scientific Instrument ID of 42 For more information about the Instrument ID see Appendix B C Link Protocol Commands or Appendix C MODBUS Protocol In the Main Menu choose Instrument Controls gt Communication Settings gt Instrument ID Use and to increment or decrement the ID value Press to save the new instrument ID Communication Protocol The Communication Protocol scree
208. nges define the concentration range of the analog outputs For example an NO2 range of 0 50 ppm restricts the NO2 analog output to concentrations between 0 and 50 ppm The display shows the current NO NO2 or NOx range The next line of the display is used to change the range The range screen is similar for the single dual and auto range modes The only difference between the screens are the words High and Low to indicate which range is displayed The example below shows the NO range screen in single mode For more GAS UNITS CURRENTLY PPM SET TO MG M3 AND SET RANGES AND CAL TOX DEFAULT SETTINGSXXXXXXXXXX CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Range Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 15 information about the single dual and auto range modes see Single Range Mode Dual Range Mode and Auto Range Mode earlier in this chapter Table 3 5 lists the available ranges In the Main Menu choose Range gt NO NO2 or NOx Range Use and to scroll through a list of choices Press to save the new range C1 C2 and C3 are custom ranges For more information about custom ranges see Set Custom Ranges below Table 3 5 Operating Ranges ppm mg m3 10 20 20 50 50 100 100 200 200 500 500 1 000 1 000 2 000 2 000 5 000 5 000 7 500 C1 C1 C2 C2 C3 C3 NO RANGE CURRENTLY 50
209. nication Settings gt TCP IP Settings gt Host Name Use and to move the cursor or change between the edit field and the alpha page Press to save the new letter in the alpha table or save the new alpha page NETMASK CURRENT 255 255 255 0 SET TO 255 255 255 000 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM DEFAULT GATEWAY CURRENT 192 168 1 1 SET TO 192 168 1 1 1 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 49 I O Configuration The I O Configuration menu deals with configuration of the analyzer s I O system The analog input configuration is displayed if the I O expansion board option is installed In the Main Menu choose Instrument Controls gt I O Configuration Output Relay Settings The Output Relay Settings menu displays a list of the 10 analog output relays available and allows the user to select the logic state or instrument parameter for the relay selected Note The digital outputs may take up to one second after the assigned state occurs to show up on the outputs In the Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings HOST NAME CURRENT ISERIES ISERIES SSSSSS ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM I O CONFIGURATION gt OUTPUT RELAY SETTINGS DI
210. noid Note plumbing connections to facilitate re connection 4 Pull solenoid valve from mounting clip 5 To replace solenoid follow above in reverse 6 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Ozonator Assembly Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 23 Figure 7 11 Replacing the Solenoid Valve Ozonator Assembly Replacement Use the following procedure to replace the ozonator assembly Figure 7 12 Equipment Required Ozonator assembly Wrench 5 8 inch Philips screwdriver 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Carefully disconnect the plumbing at the glass inlet and outlet of the ozonator Solenoid Valve Mounting Clip Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Ozonator Assembly Replacement 7 24 Model 42i High Level Instruction Manual Thermo Fisher Scientific 3 Loosen the four captive screw
211. nstrument operation Chapter 6 Troubleshooting presents guidelines for diagnosing analyzer failures isolating faults and includes recommended actions for restoring proper operation Chapter 7 Servicing presents safety alerts for technicians working on the analyzer step by step instructions for repairing and replacing components and a replacement parts list It also includes contact information for product support and technical information Chapter 8 System Description describes the function and location of the system components provides an overview of the software structure and includes a description of the system electronics and input output connections Chapter 9 Optional Equipment describes the optional equipment that can be used with this instrument Appendix A Warranty provides a copy of the warranty statement Preface Safety xvi Model 42i High Level Instruction Manual Thermo Fisher Scientific Appendix B C Link Protocol Commands provides a description of the C Link protocol commands that can be used to remotely control an analyzer using a host device such as a PC or a datalogger Appendix C MODBUS Protocol provides a description of the MODBUS Protocol Interface and is supported both over RS 232 485 RTU protocol as well as TCP IP over Ethernet Safety Review the following safety information carefully before using the analyzer This manual pr
212. nt is warming up and performing self checks After the warm up period the Run screen is automatically displayed The Run screen is the normal operating screen It displays the NO NO2 and NOx concentrations depending on operating mode From the Run screen the Main Menu can be displayed by pressing The Main Menu contains a list of submenus Each submenu contains related instrument parameters and or functions This chapter describes each submenu and screen in detail Refer to the appropriate sections for more information EDIT SOFT KEY PROMPT CURRENTLY RANGE RANGE ABCDEFGHIJKLMN BKSP OPQRSTUVWXYZ PAGE 0123456789 SAVE RANGE AVG DIAGS ALARM Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 5 Figure 3 3 Flowchart of Menu Driven Software Operation Software Overview 3 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Please wait while booting Power Up Screen The Power Up screen is displayed on power up of the Model 42i High Level The Self Test is displayed while the internal components are warming up and diagnostic checks are performed Run Screen The Run screen displays the NO NO2 and NOx concentrations The status bar displays time and the status of the remote control interface and optional zero span solenoid valves if installed The word SAMPLE on the bottom left of the display indicates the analyzer has the span z
213. nt voltage and used to control that the reaction chamber heaters to maintain a constant temperature of 50 C Protective circuitry prevents over heating in the event of broken wires to the thermistor The converter temperature is measured by a conditioned thermocouple signal and fed back to the main processor to be used to display and control the converter temperature The temperature control board receives control signals from the main processor software to control the converter heater to the desired set point Protective circuitry prevents over heating in the event of broken wires to the thermocouple or processor faults PMT Power Supply Assembly The PMT power supply produces high voltage to operate the photo multiplier tube used in the measurement system The output voltage is adjustable from approximately 600 to 1200 volts under software control Input Board Assembly The input board accepts the current signal from the PMT and converts it to a voltage which is scaled by a factor of approximately 1 10 or 100 depending on the full scale range of the NO channel The scaled voltage signal is converted to a frequency and sent to the microprocessor The input board includes a test signal that can be activated under software control The test signal is injected at the first stage of the input board in parallel with the PMT input This allows the input board and the connection to the processor system to be tested and calibrated without using the
214. nternal component Servicing Measurement Interface Board Replacement 7 42 Model 42i High Level Instruction Manual Thermo Fisher Scientific Nut driver 3 16 inch 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the I O expansion board optional if used See the I O Expansion Board Replacement procedure in this chapter 3 Remove the digital output board See the Digital Output Board Replacement procedure in this chapter 4 Unplug all connectors from the motherboard Note connector locations to facilitate reconnection 5 Using the nut driver remove the standoffs securing the board to the rear panel 6 Pop off the motherboard from motherboard support bracket and remove the motherboard 7 To install the motherboard follow previous steps in reverse Measurement Interface Board Replacement Use the following procedure to replace the measurement interface board Figure 7 20 Equipment Required Measurement interface board Philips screwdriver Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Front Panel Board Replacement The
215. nterval times are available 1 2 5 10 20 30 60 90 120 180 240 and 300 seconds In the Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Interval Use and to scroll through a list of choices Press to save the new streaming data period STREAMING DATA CONFIG INTERVAL 10 SEC ADD LABELS NO PREPEND TIMESTAMP YES gt ITEM 1 NO2 ITEM 2 INTT ITEM 3 PRES ITEM 4 NONE RANGE AVG DIAGS ALARM CHOOSE STREAM DATA gt CONCENTRATIONS OTHER MEASUREMENTS ANALOG INPUTS RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 44 Model 42i High Level Instruction Manual Thermo Fisher Scientific Concentrations The Concentrations screen allows the user to select the output signal that is tied to the selected streaming data item The selected item is shown by lt after it In dual or auto range mode High or Low is displayed to indicate high or low concentrations Range NOx is visible only in auto range mode In the Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Select Item gt Concentrations Use and to move the cursor up and down Press to select a new choice Other Measurements The Other Measurements screen allows the user to select the output signal that is tied to the selected streaming data item The selected item is shown by lt after it In
216. nty Period to repair or replace at Seller s option defective Products so as to cause the same to operate in substantial conformance with said published specifications provided that a Buyer shall promptly notify Seller in writing upon the discovery of any defect which notice shall include the product model and serial number if applicable and details of the warranty claim b after Seller s review Seller will provide Buyer with service data and or a Return Material Authorization RMA which may include biohazard decontamination procedures and other product specific handling instructions and c then if applicable Buyer may return the defective Products to Seller with all costs prepaid by Buyer Replacement parts may be new or refurbished at the election of Seller All replaced parts shall become the property of Seller Shipment to Buyer of repaired or replacement Products shall be made in accordance with the Delivery provisions of the Seller s Terms and Conditions of Sale Consumables including but not limited to lamps fuses batteries bulbs and other such expendable items are expressly excluded from the warranty under this warranty Notwithstanding the foregoing Products supplied by Seller that are obtained by Seller from an original manufacturer or third party supplier are not warranted by Seller but Seller agrees to assign to Buyer any warranty rights in such Product that Seller may have from the original manufacturer or
217. o Receive range no 0 2000E 2 ppm set range no selection set range no2 selection set range nox selection set high range no selection set high range no2 selection set high range nox selection set low range no selection set low range no2 selection set low range nox selection These commands select the NO NO2 and NOx full scale ranges according to Table B 6 The example below sets the NOx full scale to 2 000 ppm Send set range nox 7 Receive set range nox 7 ok Table B 6 Operating Ranges Selection ppm mg m3 0 10 20 1 20 50 2 50 100 3 100 200 4 200 500 5 500 1 000 6 1 000 2 000 7 2 000 5 000 C Link Protocol Commands Measurement Configuration B 30 Model 42i High Level Instruction Manual Thermo Fisher Scientific custom range range 1 2 3 This command reports the user defined value of custom range 1 2 or 3 The example below reports that custom range 1 is defined to 55 0 ppm Send custom 1 Receive custom 1 5500E 2 ppm set custom range value set custom 1 value set custom 2 value set custom 3 value set custom 1 range value set custom 2 range value set custom 3 range value These commands are used to set the maximum concentration for any of the three custom ranges 1 2 or 3 to range value where value is a floating point number representing concentration in ppm or mg m3 The example below sets the custom 1 range to 55 5 ppm Send set custom 1 range 55 5 Rece
218. o NO field displays the current NO concentration The Lo Span Conc field is where you enter the low NO calibration gas concentration Use to move the cursor left and right and use to increment and decrement the numeric character at the cursor 5 Press to calculate and save the new low NO coefficient based on the entered span concentration Calibrate Low NOx Use the following procedure to calibrate the NOx channel to the NOx calibration gas 1 Press to return to the Calibration menu and choose Cal Lo NOx Coefficient 2 Verify that the low NOx calibration gas concentration is the same as the low NO calibration gas concentration plus any known NO2 impurity The Lo NOx field displays the current NOx concentration The Lo Span Conc field is where you enter the low NOx calibration gas concentration Calibration Calibration in Dual Range and Auto Range Mode 4 14 Model 42i High Level Instruction Manual Thermo Fisher Scientific Use to move the cursor left and right and use to increment and decrement the numeric character at the cursor 3 Press to calculate and save the new low NOx coefficient based on the entered span concentration 4 Press to return to the Run screen Calibrate Low NO2 Use the following procedure to calibrate the NO2 channel to the NO2 calibration gas 1 Adjust the O3 generator in the GPT system to generate sufficient O3 to produce a decrease in the low NO concentration equivalent to about 80 of
219. ocessor and serves as the communication hub for the instrument The motherboard receives operator inputs from the front panel mounted function key panel and or over I O connections on the rear panel and sends commands to the other boards to control the functions of the instrument and to collect measurement and diagnostic information The motherboard outputs instrument status and measurement data to the front panel mounted graphics display and to the rear panel I O The motherboard also contains I O circuitry and the associated connector to monitor external digital status lines and to output analog voltages that represent the measurement data Connectors located on the motherboard include External Connectors External connectors include External Accessory RS 232 485 Communications two connectors Ethernet Communications I O connector with Power Fail Relay 16 Digital Inputs and 6 Analog Voltage Outputs Internal Connectors Internal connectors include Function key panel and Display Measurement Interface Board Data I O Expansion Board Data Digital Output Board System Description Electronics Thermo Fisher Scientific Model 42i High Level Instruction Manual 8 7 AC distribution Measurement Interface Board The measurement interface board serves as a central connection area for all measurement electronics in the instrument It contains power supplies and interface circuitry fo
220. odel 42i High Level Instruction Manual Thermo Fisher Scientific These commands set the NO NO2 and NOx concentrations alarm minimum value where value is set to either floor or ceiling according to Table B 3 The example below sets the NO concentration minimum alarm trigger to ceiling Send set alarm trig conc no 1 Receive set alarm trig conc no 1 ok Diagnostics diag volt mb This command reports the diagnostic voltage measurements on the motherboard The sequence of voltages is Positive 24 positive 15 positive 5 positive 3 3 and negative 3 3 Each voltage value is separated by a space Send diag volt mb Receive diag volt mb 24 1 14 9 4 9 3 2 3 2 diag volt mib This command reports the diagnostic voltage measurements on the measurement interface board The sequence of voltages is Positive 24 positive 15 negative 15 positive 5 positive 3 3 and positive 15 Each voltage value is separated by a space Send diag volt mib Receive diag volt mib 24 1 14 9 14 9 4 9 3 2 14 9 diag volt iob This command reports the diagnostic voltage measurements on the I O expansion board The sequence of voltages is Positive 24 positive 5 positive 3 3 and negative 3 3 Each voltage value is separated by a space Send diag volt iob Receive diag volt iob 24 1 4 9 3 2 3 2 Table B 3 Alarm Trigger Values Value Alarm Trigger 0 Floor 1 Ceiling C Link Protocol Commands Datalogging Thermo Fisher Scientific Mode
221. oefficient B 24 cal high nox coef Sets auto calibrates high range NOx coefficient B 24 cal low no coef Sets auto calibrates low range NO coefficient B 24 cal low no2 coef Sets auto calibrates low range NO2 coefficient B 24 cal low nox coef Sets auto calibrates low range NOx coefficient B 24 cal no bkg Sets auto calibrates NO background B 24 cal no coef Sets auto calibrates NO coefficient B 24 cal no2 coef Sets auto calibrates NO2 coefficient B 24 cal nox bkg Sets auto calibrates NOx background B 24 cal nox coef Sets auto calibrates NOx coefficient B 24 cal pres Sets current measured pressure as pressure during calibration for pressure compensation B 27 clr lrecs Clears away only long records that have been saved B 17 clr records Clears away all logging records that have been saved B 17 clr srecs Clears away only short records that have been saved B 17 contrast Reports sets current screen contrast B 32 conv set temp Reports sets temperature setpoint for NO2 converter B 33 conv temp Reports current NO2 converter temperature B 10 cooler temp Reports temperature of PMT cooler same as PMT temperature B 10 copy lrec to sp Sets copies current lrec selection into the scratch pad B 22 copy sp to lrec Sets copies current selections in scratch pad into lrec list B 22 copy sp to srec Sets copies current selections in scratch pad into srec list B 22 copy sp to stream Sets copies c
222. ommand that does not begin with its instrument identification number If the instrument ID is set to 0 then this byte is not required For more information on changing Instrument ID see Chapter 3 Operation Commands The analyzer must be in the remote mode in order to change instrument parameters via remote However the command set mode remote can be sent to the analyzer to put it in the remote mode Report commands commands that don t begin with set can be issued either in the remote or local mode For information on changing modes see Chapter 3 Operation The commands can be sent in either uppercase or lowercase characters Each command must begin with the proper instrument identification number ASCII character The command in the example below begins with the ASCII character code 170 decimal which directs the command to the Model 42i High Level and is terminated by a carriage return CR ASCII character code 13 decimal If an incorrect command is sent a bad command message will be received The example below sends the incorrect command set unit ppm instead of the correct command set gas unit ppm Send set unit ppm Receive set unit ppm bad cmd The save and set save params commands stores parameters in FLASH It is important that each time instrument parameters are changed that this command be sent If changes are not saved they will be lost in the event of a po
223. onnector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 15 2 AC NEUT 3 AC Ground FAN 1 PJ4 1 24V 2 Ground FAN 2 PJ5 1 24V 2 Ground AC IN PJ6 1 AC HOT 2 AC NEUT 3 AC Ground COOLER PJ7 1 Cooler Thermistor 2 Ground 3 15V_PWR 4 Cooler On Off Control AC TEMP PJ8 1 AC HOT 2 AC NEUT 3 AC Ground NO NOX SOL PJ9 1 24V 2 NO NOX Solenoid Control SAMPLE SOL PJ10 1 24V 2 Sample Solenoid Control Z S SOL PJ11 1 24V 2 Zero Span Solenoid Control SPARE1 SOL PJ12 1 24V 2 Spare 1 Solenoid Control SPARE2 SOL PJ13 1 24V 2 Spare 2 Solenoid Control PERM OVEN THERM POJ1 1 Perm Oven Gas Thermistor 2 Ground PERM OVEN POJ3 1 Perm Oven Heater On Off 2 15V_PWR 3 Perm Oven Thermistor 4 Ground Table 6 4 Measurement Interface Board Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Description Troubleshooting Connector Pin Descriptions 6 16 Model 42i High Level Instruction Manual Thermo Fisher Scientific Table 6 5 Front Panel Board Connector Pin Diagram Connector Label Reference Designator Pin Signal Description MOTHER BOARD J1 1 Ground 2 Ground 3 LCLK LCD Signal 4 Ground 5 Ground 6 LLP LCD Signal 7 LFLM LCD Signal 8 LD4 LCD Signal 9 LD0 LCD Signal 10 LD5 LCD Si
224. oubleshooting Connector Pin Descriptions 6 12 Model 42i High Level Instruction Manual Thermo Fisher Scientific 22 Keypad Row 1 Input 23 Keypad Row 4 Input 24 Keypad Row 3 Input 25 Keypad Col 2 Select 26 Keypad Col 1 Select 27 Keypad Col 4 Select 28 Keypad Col 3 Select 29 Ground 30 Ground 31 Ground 32 Ground 33 24V 34 24V RS232 RS485 A P1 A 1 NC 2 Serial Port 1 RX RS485 IN 3 Serial Port 1 TX RS485 OUT 4 NC 5 Ground 6 NC 7 Serial Port 1 RTS RS485 OUT 8 Serial Port 1 CTS RS485 IN 9 NC RS232 RS485 B P1 B 1 NC 2 Serial Port 2 RX RS485 IN 3 Serial Port 2 TX RS485 OUT 4 NC 5 Ground 6 NC 7 Serial Port 2 RTS RS485 OUT 8 Serial Port 2 CTS RS485 IN 9 NC AC IN PJ1 1 AC HOT 2 AC NEUT Table 6 3 Motherboard Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Descriptions Troubleshooting Connector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 13 3 AC Ground AC 24VPWR PJ2 1 AC HOT 2 AC NEUT 3 AC Ground AC INTF BD PJ3 1 AC HOT 2 AC NEUT 3 AC Ground Table 6 4 Measurement Interface Board Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description DATA IPJ8 1 Ground 2 RS485 from Motherboard 3 RS485 from Motherboard PRES MJ3 1 Pressure Sen
225. ovides specific information on how to operate the analyzer however if the analyzer is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Safety and Equipment Damage Alerts This manual contains important information to alert you to potential safety hazards and risks of equipment damage Refer to the following types of alerts you may see and the actual alerts that appear in this manual Safety and Equipment Damage Alert Descriptions Alert Description DANGER A hazard is present that will result in death or serious personal injury if the warning is ignored WARNING A hazard is present or an unsafe practice can result in serious personal injury if the warning is ignored CAUTION The hazard or unsafe practice could result in minor to moderate personal injury if the warning is ignored Equipment Damage The hazard or unsafe practice could result in property damage if the warning is ignored Preface Safety Thermo Fisher Scientific Model 42i High Level Instruction Manual xvii Safety and Equipment Damage Alerts in this Manual Alert Description WARNING If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired The service procedures in this manual are restricted to qualified service personnel only The Model 42i High Level is supplied with a three wire grounding cord Under no circumstances
226. pansion board option is installed to calibrate and allows the user to select the calibration action zero or span The analog output calibration menu is visible only when the instrument is in service mode For more information on the service mode see Service Mode earlier in the chapter In the Main Menu choose Service gt Analog Out Calibration CALIBRATE AMBIENT TEMP CURRENTLY 28 6 oC SET TO 25 0 oC MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM WARNING This adjustment should only be performed by an instrument service technician ANALOG OUTPUT CAL gt VOLTAGE CHANNEL 1 VOLTAGE CHANNEL 2 VOLTAGE CHANNEL 3 VOLTAGE CHANNEL 4 VOLTAGE CHANNEL 5 VOLTAGE CHANNEL 6 CURRENT CHANNEL 1 RANGE AVG DIAGS ALARM ANALOG OUTPUT CAL gt CALIBRATE ZERO CALIBRATE FULL SCALE RANGE AVG DIAGS ALARM Operation Service Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 93 Analog Output Calibrate Zero The Analog Output Calibrate Zero screen allows the user to calibrate the zero state of the selected analog output The operator must connect a meter to the output and adjust the output until it reads 0 0 V on the meter In the Main Menu choose Service gt Analog Out Calibration gt Select Channel gt Calibrate Zero Use and to increment or decrement the numeric value Press to save the value Analog Output Calibrate Full Scale The Analog Output Calibrate Full Sca
227. particulate matter before passing through the ozonator NO2 to NO Converter The Model 42i High Level includes a stainless steel NO2 to NO converter as standard equipment I O Expansion Board Assembly For a detailed description refer to the System Description chapter Terminal Block and Cable Kits The terminal block and cable kit provides a convenient way to connect devices to the analyzer The kit breaks out the signals on the rear panel connector to individual numbered terminals Two types of terminal block and cable kits are available One kit is for the DB37 connectors and can be used for either the analog output connector or the relay output connector The other kit is for the DB25 connector and can be used for the optional I O expansion board The parts available in these kits can also be purchased separately Each kit consists of one six foot cable one terminal block one snap track Note Supporting all of the connections on units with the optional I O expansion board requires two DB37 kits one DB25 kit Optional Equipment Mounting Options Thermo Fisher Scientific Model 42i High Level Instruction Manual 9 5 Mounting Options The analyzer can be installed in the configurations described in Table 9 1 and shown in Figure 9 3 through Figure 9 6 Figure 9 3 Rack Mount Option Assembly Table 9 1 Mounting Options Mounting Type Description Bench Positioned on bench includes mounting
228. placing the I O Expansion Board Optional 7 40 Rear Panel Board Connectors 7 40 Replacing the Measurement Interface Board 7 43 Replacing the Front Panel Board and the LCD Module 7 44 Hardware Components 8 2 Zero Span Option Flow Diagram 9 2 Bypass Flow Option Flow Schematic 9 3 Rack Mount Option Assembly 9 5 Figures xii Model 42i High Level Instruction Manual Thermo Fisher Scientific Bench Mounting 9 6 EIA Rack Mounting 9 7 Retrofit Rack Mounting 9 8 Flag Status B 12 Tables Thermo Fisher Scientific Model 42i High Level Instruction Manual xiii Tables Model 42i High Level Specifications 1 3 Front Panel Pushbuttons 3 3 Default Analog Outputs in Single Range Mode 3 9 Default Analog Outputs in Dual Range Mode
229. pment Required Allen Wrench 9 64 inch Wrench 7 16 inch Wrench 9 16 inch 1 Remove PMT cooler as described in PMT Cooler and Reaction Chamber Replacement in this chapter 2 Disconnect the 1 8 inch line at the mixing tee on the rear of the reaction chamber This line is connected to the left 1 8 inch elbow at the bottom of the front of the reaction chamber 3 Disconnect 1 4 inch fitting from the exhaust elbow on the front of the reaction chamber 4 Disconnect 1 8 inch fitting from 1 8 inch elbow at the bottom of the front of the reaction chamber 5 Remove the three socket head screws fastening front of reaction chamber to rear This exposes the inner surfaces of both sections of the Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Reaction Chamber Cleaning or Removal Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 19 reaction chamber and the quartz window To clean these surfaces use cotton swabs and methanol Figure 7 9 Cleaning or Removing the Reaction Chamber 6 To continue removing rear of reaction chamber remove the three socket head screws holding it to cooler being careful to keep quartz window and red filter in cooler body 7 To reinstall reaction chamber follow previous steps in reverse making sure to backfill the cooler w
230. polarizing plate is very fragile handle it carefully Do not wipe the polarizing plate with a dry cloth it may easily scratch the plate Do not use alcohol acetone MEK or other Ketone based or aromatic solvents to clean the module use a soft cloth moistened with a naphtha cleaning solvent Do not place the module near organic solvents or corrosive gases Do not shake or jolt the module Servicing Service Locations 7 46 Model 42i High Level Instruction Manual Thermo Fisher Scientific Service Locations For additional assistance service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com aqi 1 866 282 0430 Toll Free 1 508 520 0430 International Thermo Fisher Scientific Model 42i High Level Instruction Manual 8 1 Chapter 8 System Description This chapter describes the function and location of the system components provides an overview of the software structure and includes a description of the system electronics and input output connections and functions Hardware on page 8 1 describes the analyzer components Software on page 8 4 provides an overview of the software organization and detailed information on the software tasks Electronics on page 8 6 describes the system boards assemblies and connectors I O Components on page 8 9 describes
231. ports sets temperature compensation on or off B 32 time Reports sets current time 24 hour time B 35 up Simulates pressing up pushbutton B 27 zero Sets zero span valves to zero mode B 31 Table B 1 C Link Protocol Commands continued Command Description Page C Link Protocol Commands Measurements Thermo Fisher Scientific Model 42i High Level Instruction Manual B 9 Measurements avg time high avg time low avg time These commands report the averaging time in seconds when operating in single range or averaging time used with the high and low ranges when operating in dual or auto range mode The example below shows that the averaging time is 300 seconds according to Table B 2 Send avg time Receive avg time 11 300 sec set avg time selection set high avg time selection set low avg time selection These commands set the averaging time high and low averaging times according to Table B 2 The example below sets the low range averaging time to 120 seconds Send set low avg time 8 Receive set low avg time 8 ok Table B 2 Averaging Times Selection Time NO Measure Mode NOx Measure Mode Time NO NOx Measure Mode 0 1 seconds 1 2 2 5 3 10 10 seconds 4 20 20 5 30 30 6 60 60 7 90 90 8 120 120 9 180 180 10 240 240 11 300 300 C Link Protocol Commands Measurements B 10 Model 42i High Level Instruction Manual Thermo Fisher Scientific no no2 nox
232. r sensors and control devices in the measurement system It sends status data to the motherboard and receives control signals from the motherboard Measurement Interface Board Connectors Connectors located on the measurement interface board include Data communication with the motherboard 24V and 120VAC power supply inputs Fans and solenoid outputs Cooler control 120VAC outputs for the pump and temperature control board Ozonator Pressure sensor Ambient temperature sensor Temperature control board PMT high voltage supply Measurement input board Permeation oven option Pressure Sensor Assembly The pressure sensor assembly consists of a board containing an instrumentation amplifier and a pressure transducer with a gas input fitting The pressure transducer output is produced by measuring the pressure difference between the sample gas pressure and ambient air pressure Temperature Control Board The temperature control board regulates and sets the temperature of the reaction chamber and converter System Description Electronics 8 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific The reaction chamber temperature is measured with a thermistor The voltage across the thermistor is fed to the main processor for use in calculating and displaying the reaction chamber temperature The voltage across the thermistor is also compared to a set poi
233. r temperature alarm minimum value is 47 0 C Send alarm chamber temp min Receive alarm chamber temp min 47 0 deg C set alarm chamber temp min value set alarm chamber temp max value These commands set the chamber temperature alarm minimum and maximum values to value where value is a floating point number representing chamber temperature alarm limits in degrees C The example below sets the chamber temperature alarm maximum value to 50 0 C C Link Protocol Commands Alarms Thermo Fisher Scientific Model 42i High Level Instruction Manual B 13 Send set alarm chamber temp max 50 0 Receive set alarm chamber temp max 50 0 ok alarm conc no min alarm conc no2 min alarm conc nox min alarm conc no max alarm conc no2 max alarm conc nox max These commands report the NO NO2 and NOx concentrations alarm minimum and maximum value current setting The example below reports that the NO concentration minimum is 5 2 ppm Send alarm conc no min Receive alarm conc no min 5 2 ppm set alarm conc no min value set alarm conc no2 min value set alarm conc nox min value set alarm conc no max value set alarm conc no2 max value set alarm conc nox max value These commands set the NO NO2 and NOx concentrations alarm minimum and maximum value to value where value is a floating point representation of the concentration alarm limits Values must be in the units that are currently set for use The example below sets the NO concentration al
234. rase Log is used to erase all saved data for the selected record type not all short records and long records In the Main Menu choose Instrument Controls gt Datalogging Settings gt Erase Log Press to erase all data Press to confirm erasure DATE AND TIME 20 JUN 2005 10 00 CHG DAYS SET CURSOR TO MONTHS ACCEPT AS SHOWN RANGE AVG DIAGS ALARM time date flags 10 01 06 20 05 FC0088900 10 02 06 20 05 FC0088900 10 03 06 20 05 FC0088900 10 04 06 20 05 FC0088900 PGUP DN PAN L R RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 35 Select Content The Select Content submenu displays a list of 32 record fields to use and a submenu list of the analog output signal group choices to choose from Choices are Concentrations Other Measurements and Analog Inputs if the I O expansion board is installed This is a temporary list of items for the selected record type that must be committed via the datalogging menu before the changes will apply Note that committing any changes to this list will erase all currently logged data as the format of the stored data is changed In the Main Menu choose Instrument Controls gt Datalogging Settings gt Select Content ERASE LREC LOG FILE DATA ERASE LREC LOG FILE DATA ERASE ERASE ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM ERASURE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM
235. reading is added to the corrected NO reading to yield a fully corrected NOx value Output Communication The front panel display serial and Ethernet data ports and analog outputs are the means of communicating the results of the above calculations The front panel display presents the NO NO2 and NOx concentrations simultaneously The display is updated every 1 10 seconds depending on the averaging time The analog output ranges are user selectable via software The analog outputs are defaulted based on the measurement range The defaults are calculated by dividing the data values by the full scale range for each of the three parameters and then multiplying each result by the user selected output range Negative concentrations can be represented as long as they are within 5 of full scale The zero and span values may be set by the user to any desired value System Description Electronics 8 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Electronics All electronics operate from a universal switching supply which is capable of auto sensing the input voltage and working over the entire operating range Internal pumps and heaters all operate on 110VAC An optional transformer is required if operating on the 210 250VAC or 90 110VAC ranges An on off switch controls all power to the instrument and is accessible on the front panel Motherboard The motherboard contains the main processor power supplies a sub pr
236. rement the numeric character at the cursor 3 Press to calculate and save the new high NO coefficient based on the entered span concentration Calibrate High NOx Use the following procedure to calibrate the NOx channel to the NOx calibration gas 1 Press to return to the Calibration menu and choose Cal Hi NOx Coefficient 2 Verify that the high NOx calibration gas concentration is the same as the high NO calibration gas concentration plus any known NO2 impurity Use to move the cursor left and right and use to increment and decrement the numeric character at the cursor 3 Press to calculate and save the new high NOx coefficient based on the entered span concentration 4 Press to return to the Run screen Calibrate High NO2 Use the following procedure to calibrate the NO2 channel to the NO2 calibration gas 1 Adjust the O3 generator in the GPT system to generate sufficient O3 to produce a decrease in the high NO concentration equivalent to about 80 of the URL of the high NO2 range The decrease must not exceed 90 of the high NO concentration determined in the Calibrate High NOx procedure Calibration Zero and Span Check 4 16 Model 42i High Level Instruction Manual Thermo Fisher Scientific 2 From the Main Menu choose Calibration gt Cal Hi NO2 Coefficient The Hi NO2 field displays the current NO2 concentration The Hi Span Conc field is where you enter the high NO2 calibration gas concentration
237. ries Inspection and Replacement The capillaries normally only require inspection when instrument performance indicates that there may be a flow problem Use the following procedure to inspect and replace the capillaries This procedure can be used to check any or all of the capillaries 1 Turn the instrument OFF and unplug the power cord 2 Remove the instrument cover 3 Locate the capillaries See Figure 5 1 and Figure 7 2 Equipment Damage Do Not use solvents or other cleaning products to clean the outside case Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter Preventive Maintenance Capillaries Inspection and Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 5 3 Figure 5 1 Inspecting and Replacing the Capillaries 4 Remove the Cajon fitting s from the reaction chamber body using a 5 8 inch wrench 5 Remove the glass capillaries and O ring Inspect O ring for cuts or abrasion and replace as necessary 6 Check capillary for particulate deposits Clean or replace as necessary 7 Replace capillary in reaction chamber body making sure the O ring is around the capillary before inserting it into the body 8 Replace Cajon fitting Note that the Cajon fi
238. ring the multipoint calibration Calibration in Dual Range and Auto Range Mode The dual auto range calibration feature is used to calibrate the analyzer at two different span levels as opposed to a single span level in the standard mode generating a tailored multi point calibration curve stored in the analyzer s memory This feature may be used Z 100 x URL NO scale Response Recorder NO OUT 2 2 Calibration Calibration in Dual Range and Auto Range Mode 4 12 Model 42i High Level Instruction Manual Thermo Fisher Scientific When widely different gas levels are being monitored such as a factor of 10 or greater apart If precision and span levels are being introduced using separate tanks If more than one multi component cylinder is being used to calibrate the instrument Properly designed chemiluminescence analyzers are inherently linear over a wide dynamic range and under normal USEPA compliance situations this feature is not required Dual calibration may be used for span levels less than a factor of 10 apart however if this is done to correct for a significant non linearity it may mask the problems causing the effect such as bad calibration cylinder leaks in sampling lines or low ozonator output Use the following procedures to calibrate the analyzer in dual or auto range mode Use the following procedure to set NO and NOx background readings to zero Both the Set NO Back
239. rmat 01 ok where xxxx 4 hexadecimal digits that represent the sum of all the characters bytes in the message host name This command reports the host name string Send host name Receive host name ISERIES set host name string This command sets the host name string where string is 1 13 alphanumeric characters Send set host name analyzer01 Receive set host name analyzer01 ok Table B 8 Reply Termination Formats Format Reply Termination 00 lt CR gt 01 lt NL gt sum xxxx lt CR gt C Link Protocol Commands Communications Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 39 instr name This command reports the instrument name Send instr name Receive instr name NO NO2 NOx Analyzer NO NO2 NOx Analyzer instrument id This command reports the instrument id Send instrument id Receive instrument id 42 set instrument id value This command sets the instrument id to value where value is a decimal number between 0 and 127 inclusive Note sending this command via RS 232 or RS 485 will require the host to use the new id for subsequent commands Send set instrument id 50 Receive set instrument id 50 ok mode This command reports what operating mode the instrument is in local service or remote The example below shows that the instrument is in the remote mode Send mode Receive mode remote set mode local set mode remote These commands set th
240. rmo Fisher Scientific Model 42i High Level Instruction Manual 7 43 1 Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter to lower the partition panel then proceed to the next step below 2 Unplug all connectors Note the locations of the connectors to facilitate reconnection 3 Pop off the measurement interface board from the four mounting studs and remove the board 4 To install the measurement interface board follow previous steps in reverse 5 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Figure 7 20 Replacing the Measurement Interface Board Front Panel Board Replacement Use the following procedure to replace the front panel board Figure 7 21 Equipment Required Front panel board 1 Turn instrument OFF unplug the power cord and remove the cover Measurement Interface Board Mounting Studs 4 Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing LCD Module Replacement 7 44 Model 42i High Level Instruction Manual Thermo Fisher Scientific 2 Remove the three ribbon cables and the two wire connector from the front panel board 3 Pop off the board from the two top mounting studs and remove the board by lifting it up and of
241. ro e Record the stable zero air responses as ZNO ZNOX and ZNO2 recorder response percent scale 3 Adjust the NO flow from the standard NO cylinder to generate a NO concentration of about 80 of the upper range limit URL of the NO range The exact NO concentration is calculated from Where NO OUT Diluted NO concentration at the output manifold ppm NOSTD No feed concentration FNO No flow FO Ozone flow FD Dilution flow 4 Allow the analyzer to sample the NO calibration gas until the NO NO2 and NOx readings stabilize 5 When the responses stabilize from the Main Menu choose Calibration gt Cal NO Coefficient The NO line of the Calibrate NO screen displays the current NO concentration The SPAN CONC line of the display is where you enter the NO calibration gas concentration Use and to move the cursor left and right and use and to increment and decrement each digit 6 Press to calculate and save the new NO coefficient based on the entered span concentration F F F NO x F NO D O NO STD NO OUT Calibration Calibration 4 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific The NO recorder response will equal Where URL Nominal upper range limit of the NO channel ppm Record the NO OUT concentration and the NO response as indicated by the recorder response 7 Press to return to the Calibration menu and c
242. s This command sets all the parameters to their default values This does not affect the factory calibrated parameters Send set default params Receive set default params ok ozonator This command reports the ozonator on or off The example below reports that the ozonator is on Send ozonator Receive ozonator on set ozonator onoff These commands set the ozonator on or off The example below sets the ozonator off Send set ozonator off Receive set ozonator off ok ozonator flow This command reports the current ozonator flow The example below reports that the current ozonator flow is 0 050 LPM Send ozonator flow Receive ozonator flow 0 050 l m ozonator safety This command reports the status of the ozonator safety on or off The example below reports that the ozonator safety is on Send ozonator safety Receive ozonator safety on set ozonator safety onoff These commands set the ozonator safety on or off The example below sets the ozonator off Send set ozonator safety off Receive set ozonator safety off ok C Link Protocol Commands Hardware Configuration Thermo Fisher Scientific Model 42i High Level Instruction Manual B 35 ozonator status This command reports the status of the ozonator and safety The example below reports that the ozonator is off Send ozonator status Receive ozonator status off pmt status This command reports the status of the PMT on or off The example below r
243. s securing the ozonator bracket to the floor plate Figure 7 12 Replacing the Ozonator Assembly 4 Remove the two screws securing the ozonator to the ozonator bracket 5 Unplug the ozonator from the ozonator transformer by lifting the ozonator straight up 6 To install the ozonator follow the previous steps in reverse 7 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter Ozonator Assembly Top View Ozonator Assembly Side View Captive Screws 4 Ozonator Bracket Screws 2 Ozonator Ozonator Transformer Screws 4 Ozonator Transformer Servicing Ozonator Transformer Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 25 Ozonator Transformer Replacement Use the following procedure to replace the ozonator transformer Figure 7 12 Equipment Required Ozonator transformer Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover 2 Remove the ozonator assembly as described in Ozonator Assembly Replacement 3 Disconnect the plug connecting the ozonator transformer to the measurement interface board OZONATOR connector 4 Remove the four screws holding the ozonator transformer to the ozonator bracket and remove the ozonator transformer 5 To install the ozonator transformer follow the previous steps in reverse 6 Re install the measurement bench
244. seconds before again switching the solenoid Measurement Calculations The calculation of the NO and NOx concentrations is lengthy and uses the high level processor to provide the most accurate readings The calculation begins by subtracting the appropriate electronic offset from the seven second count accumulation Following this correction the raw accumulated counts are scaled according to the gain setting of the input board Next the uncorrected NO and NOx values are determined according to a unique averaging algorithm which minimizes errors resulting from rapidly changing gas concentrations This algorithm results in NO and NOx values which are stored in RAM in a circular buffer that holds all the ten second data from the previous five minutes This data is averaged over the selected time interval which can be any multiple of ten between 10 and 300 the manual modes have additional intervals of 1 2 and 5 seconds The background values for NO and NOx which are corrected for temperature are subtracted from their respective averages The NO reading is corrected by the stored span factor and by the temperature factor The NOx reading is partially corrected by the span factor temperature factor and balance factor The corrected NO value is subtracted from the partially corrected NOx value to yield an uncorrected NO2 value The NO2 value is then corrected for converter efficiency to give a corrected NO2 reading Finally the corrected NO2
245. see Service Menu later in this chapter Note The service mode should be turned off when finished as it prevents remote operation In the Main Menu choose Instrument Controls gt Service Mode Press to toggle and set the service mode on or off SCREEN CONTRAST CURRENTLY 50 SET TO 60 CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM SERVICE MODE CURRENTLY OFF SET TO ON TOGGLE VALUE RANGE AVG DIAGS ALARM Operation Diagnostics Menu 3 64 Model 42i High Level Instruction Manual Thermo Fisher Scientific Date Time The Date Time screen and allows the user to view and change the system date and time 24 hour format The internal clock is powered by its own battery when instrument power is off In the Main Menu choose Instrument Controls gt Date Time Use and to move and change the value of the date and time Press to edit and save the new date and time Diagnostics Menu The Diagnostics menu provides access to diagnostic information and functions This menu is useful when troubleshooting the instrument The analog input readings and analog input voltages are displayed if the I O expansion board option is installed In the Main Menu choose Diagnostics DATE AND TIME 19 MAR 2005 12 34 56 DATE AND TIME PRESS TO EDIT 19 MAR 2005 12 34 56 SETTING DAYS SET MONTHS CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM DIAGNOSTICS
246. set nox gas value set high no gas value set high no2 gas value set high nox gas value set low no gas value set low no2 gas value set low nox gas value These commands set the NO NO2 and NOx span gas concentrations used by the auto calibration routine to value where value is a floating point representation of the gas concentration in current selected units The gas units are the same as those chosen by the user The example below sets the NO span gas concentration to 123 4 ppm Send set no gas 123 4 Receive set no gas 123 4 ok no bkg nox bkg These commands report the current NO and NOx backgrounds The example below reports that the NO background is 55 ppm Send no bkg Receive no bkg 55 ppm set no bkg value set nox bkg value These commands are used to set NO and NOx backgrounds to user defined values to value where value is a floating point representation of the background in current selected units The example below sets the NO background to 55 ppm Send set no bkg 55 Receive set no bkg 55 ok C Link Protocol Commands Keys Display Thermo Fisher Scientific Model 42i High Level Instruction Manual B 27 pres cal This command reports the pressure recorded at the time of calibration The example below shows that the pressure at calibration is 33 8 mmHg Send pres cal Receive pres cal 33 8 mmHg set pres cal This command automatically sets the current pressure as the calibration pressure The example below
247. shown below All of the values are reported as 32 bit IEEE standard 754 floating point format This uses 2 sequential registers least significant 16 bits first The request specifies the starting register address and the number of registers Registers are addressed starting at zero Therefore registers numbered 1 16 are addressed as 0 15 The register data in the response message are packed as two bytes per register with the binary contents right justified within each byte For each register the first byte contains the high order bits and the second contains the low order bits Response Field Name Hex Function 0x01 Byte Count 0x03 Outputs status 2 10 0xCD Outputs status 11 15 0x0A Request Function code 1 Byte 0x03 or 0x04 Starting Address 2 Bytes 0x0000 to maximum allowed by instrument Quantity of Registers 2 Bytes 1 to maximum allowed by instrument MODBUS Protocol Function Codes C 6 42i High Level Instruction Manual Thermo Fisher Scientific N Quantity of Registers Here is an example of a request to read registers 10 13 The contents of register 10 are shown as the two byte values of 0x02 0x2B The contents of registers 11 13 are 0x00 0x00 0x00 0x64 and 0x00 0x64 respectively Response Function code 1 Byte 0x03 or 0x04 Byte count 1 Byte 2 x N Register value N x 2 Bytes n N or N 1 Error Response Function code 1 Byte Function code 0x80 Exception code 1 By
248. sor Input 2 Ground 3 15V 4 15V INPUT BD MJ8 1 15V 2 Ground 3 15V 4 5V 5 Ground 6 Measurement Frequency Output 7 Amplifier Zero Adjust Voltage 8 SPI Output 9 SPI Clock 10 SPI Board Select AMB TEMP MJ9 1 Ambient Temperature Thermistor 2 Ground HVPS MJ10 1 HV Power Supply Voltage Adjust 2 Ground Table 6 3 Motherboard Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Descriptions Troubleshooting Connector Pin Descriptions 6 14 Model 42i High Level Instruction Manual Thermo Fisher Scientific 3 HV Power Supply On Off 4 Ground 5 HV Power Supply Voltage Monitor 6 Ground 7 Ground FLOW SW MJ14 1 NC 2 Ground 3 Ozonator Flow OK Switch FLOW MJ15 1 Flow Sensor Input 2 Ground 3 15V 4 15V 5 Ground TEMP CTRL MJ17 1 Bench Temperature Input 2 Ground 3 15V 4 Converter Heater On Off 5 Converter Temperature Input 6 15V_PWR OZONATOR OJ1 1 Ozonator Output A 2 Ozonator Output B 24V IN P1 1 24V 2 Ground PROV INPUT P2 1 Spare Voltage Input 2 Ground 3 Ground 4 Ground 5 Ground 6 Ground 7 Spare Frequency Input 8 Ground 9 Ground AC PUMP PJ1 1 AC HOT Table 6 4 Measurement Interface Board Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Description Troubleshooting C
249. span gas to calibrate the high range Whether dual or single range the first step in calibrating the instrument is to assign the calibration pressure The calibration pressure is used to account for slight pressure fluctuation brought on by changing weather The calibration pressure is set equal to the reactor pressure at the time of calibration For more information about calibration see Chapter 4 Calibration In the Main Menu choose Calibration RESTORE DEFAULT CAL RESTORE DEFAULT CAL RESTORE RESTORE ARE YOU SURE YOU WANT TO x PRESS TO CONFIRM RESTORE RANGE AVG DIAGS ALARM RANGE AVG DIAGS ALARM Operation Calibration Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 23 Calibrate NO and NOx Background The Calibrate NO and NOx Background screens are used to adjust the background or perform a zero calibration Be sure the analyzer samples zero air until the readings stabilize The display shows the current NO or NOx reading It is important to note the averaging time when calibrating The longer the averaging time the more precise the calibration will be For the most precise calibration use the 300 second averaging time For more information about calibration see Chapter 4 Calibration In the Main Menu choose Calibration gt Calibrate NO or NOx Background Press to set the new reading to zero CALIBRATION CALIBRATION gt CAL NO BACKGROUND gt
250. sponse Response Function code 1 Byte 0x01 or 0x02 Byte count 1 Byte N Output Status n Byte n N or N 1 Error Response Function code 1 Byte Function code 0x80 Exception code 1 Byte 01 Illegal Function 02 Illegal Address 03 Illegal Data 04 Slave Device Failure Request Field Name Hex Function 0x01 Starting Address Hi 0x00 Starting Address Lo 0x02 Quantity of Outputs Hi 0x00 Quantity of Outputs Lo 0x0D MODBUS Protocol Function Codes Thermo Fisher Scientific 42i High Level Instruction Manual C 5 The status of outputs 2 10 is shown as the byte value 0xCD or binary 1100 1101 Output 10 is the MSB of this byte and output 2 is the LSB By convention bits within a byte are shown with the MSB to the left and the LSB to the right Thus the outputs in the first byte are 10 through 2 from left to right In the last data byte the status of outputs 15 11 is shown as the byte value 0x0A or binary 0000 1010 Output 15 is in the fifth bit position from the left and output 11 is the LSB of this byte The four remaining high order bits are zero filled 0x03 0x04 Read Holding Registers Read Input Registers Read holding input registers reads the measurement data from the instrument Issuing either of these function codes will generate the same response These functions read the contents of one or more contiguous registers These registers are 16 bits each and are organized as
251. st with input translation That is the values read are translated before they are compared to the selection list options L Indicates a button which pops up a selection list without any translation The output value is number of the selected option T Indicates a button which pops up a selection list with output translation The number of the option selected is used as an index into the translation table to generate an output string N Indicates a button which only sends the subsequent command to the instrument No user prompting happens The following string through an optional or the end of the line is the command which is to be sent to the instrument upon the completion of the button selection The command string should normally contain print style formatting to include the user input If a is present it indicates a command which is sent to the instrument upon successful completion of the button command to update the value field This is not currently used C Link Protocol Commands Record Layout Definition B 48 Model 42i High Level Instruction Manual Thermo Fisher Scientific Examples Some examples n is the C syntax for an end of line character Concentrations n This is a single text only line n This is a single blank line NO 3s n This is a line which appears slightly indented The text field is NO the value is taken from the third element of the data response and interprete
252. successfully sets the calibration pressure to 35 0 mmHg Send set pres cal 35 0 Receive set pres cal 35 0 ok set cal pres This command automatically sets the current pressure as the calibration pressure The example below successfully sets the calibration pressure Send set cal pres Receive set cal pres ok Keys Display push button button do down en enter he help le left me menu ri right ru run up 1 2 3 4 These commands simulates pressing the front panel pushbuttons The numbers represent the front panel soft keys from left to right Send push enter Receive push enter ok isc iscreen This command retrieves the framebuffer data used for the display on the iSeries instrument It is 19200 bytes in size 2 bits per pixel 4 pixels per byte arranged as 320 by 240 characters The data is sent in RLE encoded form to save time in transmission It is sent as a type 5 binary c_link response with no checksum The RLE encoding consists of a 0 followed by an 8 bit count of consecutive 0xFF bytes The following c code will expand the incoming data C Link Protocol Commands Keys Display B 28 Model 42i High Level Instruction Manual Thermo Fisher Scientific To convert this data into a BMP for use with windows it needs to be turned into a 4BPP as that is the smallest windows can display Also note that BMP files are upside down relative to this data i e the top display line is the
253. systems and output have been empirically determined This empirical data is used to compensate for any changes in temperature This compensation can be used for special applications or when operating the instrument outside the recommended temperature range even though the Model 42i High Level does not require temperature compensation for EPA equivalency When temperature compensation is on the display shows the current internal instrument temperature measured by a thermistor on the Interface board When temperature compensation is off the display shows the factory standard temperature of 30 C In the Main Menu choose Instrument Controls gt Temperature Compensation Press to toggle and set the temperature compensation on or off TABLE POINT 01 USER VAL CURRENTLY 0 00 SET TO 00000 00 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 62 Model 42i High Level Instruction Manual Thermo Fisher Scientific Pressure Compensation Pressure compensation provides compensation for any changes to the instrument s output signal due to reaction chamber pressure variations The effects of reaction chamber pressure changes on the analyzer s subsystems and output have been empirically determined This empirical data is used to compensate for any change in reaction chamber pressure This compensation can be used even though the Model 42i High Level does not require pressure compensatio
254. t SREC LREC The Select SREC LREC is used to select short record or long record format for other operations in this menu In the Main Menu choose Instrument Controls gt Datalogging Settings gt Select SREC LREC Use and to scroll through a list of choices Press to set record format MODE CURRENTLY MANUAL NO SET TO NO NOX CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM DATALOGGING SETTINGS gt SELECT SREC LREC SREC VIEW LOGGED DATA ERASE LOG SELECT CONTENT COMMIT CONTENT RESET TO DEFAULT CONTENT CONFIGURE DATA LOGGING RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 32 Model 42i High Level Instruction Manual Thermo Fisher Scientific View Logged Data The View Logged Data screen is used to select the start point to view the logged data by number of records or date and time In the Main Menu choose Instrument Controls gt Datalogging Settings gt Select SREC or LREC gt View Logged Data Use and to toggle between number of records or date and time Press to accept Number of Records The Number of Records screen is used to select the starting point to display the number of records back to view Use and to increment or decrement the numeric value Press to set the starting record and continue to the record display screen SELECT LOG TYPE CURRENTLY SREC SET TO LREC TOGGLE VALUE RANGE AVG DIAGS ALARM SELECT START POINT BY
255. t To field displays Full Scale 5 Check that the meter is displaying the full scale value If the meter reading differs by more than one percent the analog outputs should be adjusted Refer to the Analog Output Adjustment procedure that follows 6 Press to set the output to zero The Output Set To field displays Zero 7 Check that the meter is displaying a zero value If the meter reading differs by more than one percent the analog outputs should be adjusted Refer to the Analog Output Adjustment procedure that follows Analog Output Adjustment Use the following procedure to adjust the analog voltage outputs if a meter reading in the Analog Output Testing procedure differed by more than one percent 1 Connect a meter to the channel to be adjusted Figure 7 15 shows the analog output pins and Table 7 3 identifies the associated channels 2 From the Main Menu press to scroll to Service gt press gt to scroll to Analog Output Calibration gt and press The Analog Output Cal screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press The Service Mode screen appears Servicing Pressure Transducer Assembly Replacement 7 32 Model 42i High Level Instruction Manual Thermo Fisher Scientific b Press to toggle the Ser
256. t test Calibration Calibration 4 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific meter All volumetric flow rates should be corrected to 25 C and 760 mm Hg 3 Precautions should be taken to remove O2 and other contaminants from the NO pressure regulator and delivery system prior to the start of calibration to avoid any conversion of NO to NO2 Failure to do so can cause significant errors in calibration This problem can be minimized by a carefully evacuating the regulator after the regulator has been connected to the cylinder and before opening the cylinder valve b thoroughly flushing the regulator and delivery system with NO after opening the cylinder valve c not removing the regulator from the cylinder between calibrations unless absolutely necessary 4 Connect the analyzer sample bulkhead input to the output of the GPT system Dynamic Parameter Specifications for Gas Phase Titrator Use the following definitions for the remainder of this chapter PR Dynamic parameter specification to ensure complete reaction of the available O3 ppm min NO RC NO concentration in the reaction chamber ppm tR Residence time of the reactant gases in the reaction chamber min NO STD Concentration of the undiluted NO standard ppm FNO NO flow rate sccm FO O3 generator air flow rate sccm VRC Volume of the reaction chamber cc FT Analyzer demand plus 10 to 50 excess
257. t the tubing from the pressure transducer and connect a vacuum pump known to produce a vacuum less than 1 mm Hg 3 From the Main Menu press to scroll to Service gt press gt to scroll to Pressure Calibration gt and press The Pressure Sensor Cal screen appears WARNING The service procedures in this manual are restricted to qualified service representatives If the equipment is operated in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component Servicing Pressure Transducer Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 35 If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at Step 3 to access the Pressure Sensor Cal screen 4 At the Pressure Sensor Cal screen press to select Zero The Calibrate Pressure Zero screen appears 5 Wait at least 10 seconds for the zero reading to stabilize then press to save the zero pressure val
258. table point in the conversion table from 0 00 to 10 50 The default table is a two point table with point 1 0 00 V 000 0 U and point 2 10 00 V 10 0 U In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Select Point gt Volts Use and to move the cursor up and down Press to save the new value TABLE POINT 01 CONFIG gt VOLTS 0 00 USER VALUE 0 00 RANGE AVG DIAGS ALARM TABLE POINT 01 VOLTS CURRENTLY 0 00 SET TO 00 00 MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 61 User Value The User Value screen allows the user to set the output value for the corresponding input voltage for the selected table point in the conversion table from 9999999 to 99999999 The default table is a two point table with point 1 0 00 V 000 0 U and point 2 10 00 V 10 0 U In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Table Point gt User Value Use and to move the cursor up and down Press to save the new value Temperature Compensation Temperature compensation provides compensation for any changes to the instrument s output signal due to internal instrument temperature variations The effects of internal instrument temperature changes on the analyzer s sub
259. te 01 Illegal Function 02 Illegal Address 03 Illegal Data 04 Slave Device Failure Request Field Name Hex Function 0x03 Starting Address Hi 0x00 Starting Address Lo 0x09 No of Registers Hi 0x00 No of Registers Lo 0x04 Response Field Name Hex Function 0x03 Byte Count 0x06 Register value Hi 10 0x02 Register value Lo 10 0x2B Register value Hi 11 0x00 Register value Lo 11 0x00 Register value Hi 12 0x00 Register value Lo 12 0x64 Register value Hi 13 0x00 Register value Lo 13 0x64 MODBUS Protocol Function Codes Thermo Fisher Scientific 42i High Level Instruction Manual C 7 0x05 Force Write Single Coil The force write single coil function simulates the activation of the digital inputs in the instrument which triggers the respective action This function code is used to set a single action to either ON or OFF The request specifies the address of the action to be forced Actions are addressed starting at zero Therefore action number 1 is addressed as 0 The requested ON OFF state is specified by a constant in the request data field A value of 0xFF00 requests the action to be ON A value of 0x0000 requests it to be OFF All other values are illegal and will not affect the output The normal response is an echo of the request returned after the state has been written Here is an example of a request to write Coil 5 ON Request Function code
260. tes screen defines how long zero air is sampled by the instrument The span and purge duration screens look and function the same way as the zero duration screen and are used to set how long the span gas and sample gas are sampled by the instrument Durations between 0 and 60 minutes are acceptable Each time a zero span check occurs the zero check is done first followed by the span check To perform just a zero check set the span and purge duration screen to 0 off The same applies to perform just a span or purge check In the Main Menu choose Calibration gt Zero Span Check gt Zero Span or Purge Duration Min Use and to increment and decrement the numeric value Press to save the duration value Zero Span Averaging Time The Zero Span Averaging Time screen allows the user to adjust the zero span averaging time The zero span averaging time is used by the analyzer only when performing an automatic zero or span check The analyzer s averaging time is used for all other functions The following averaging times are available 1 2 5 10 20 30 60 90 120 180 240 and 300 seconds In the Main Menu choose Calibration gt Zero Span Check gt Zero Span Avg Sec Use and to scroll through a list of choices Press to save the averaging time ZERO DURATION CURRENTLY 30 MIN SET TO 31 MIN MOVE CURSOR CHANGE VALUE SAVE RANGE AVG DIAGS ALARM Operation Calibration Menu 3 28
261. th low range coefficients B 10 low no2 coef Reports sets low range NO2 coefficient B 25 low no2 gas Reports sets low range NO2 span gas concentration B 25 low nox Reports NOx concentrations calculated with low range coefficients B 10 low nox coef Reports sets low range NOx coefficient B 24 low nox gas Reports sets low range NOx span gas concentration B 25 low range no Reports sets current NO low range B 29 Table B 1 C Link Protocol Commands continued Command Description Page C Link Protocol Commands Commands Thermo Fisher Scientific Model 42i High Level Instruction Manual B 7 low range no2 Reports sets current NO2 low range B 29 low range nox Reports sets current NOx low range B 29 lr Outputs long records in the format specified in the command B 18 lrec Outputs long records B 18 lrec format Reports sets output format for long records ASCII or binary B 20 lrec layout Reports current layout of lrec data B 20 lrec mem size Reports maximum number of long records that can be stored B 21 lrec per Reports sets long record logging period B 21 malloc lrec Reports sets memory allocation for long records B 21 malloc srec Reports sets memory allocation for short records B 21 me menu Simulates pressing menu pushbutton B 27 meas mode Reports sets which measurement mode is active B 31 mode Reports operating mode in local service or remote B 39 no Reports current NO
262. the Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Select Item gt Other Measurements Use and to move the cursor up and down STREAMING DATA INTERVAL CURRENTLY 10 SEC SET TO 20 SEC CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM CONCENTRATIONS gt NONE NO NO2 lt NOx RANGE NOX RANGE AVG DIAGS ALARM Operation Instrument Controls Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 45 Press to select a new choice Analog Inputs The Analog Inputs screen allows the user to select the output signal none or analog inputs 1 8 that is tied to the selected streaming data item The selected item is shown by lt after it In the Main Menu choose Instrument Controls gt Communication Settings gt Streaming Data Config gt Select Item gt Analog Inputs Use and to move the cursor up and down Press to select a new choice RS 232 RS 485 Selection The RS 232 RS 485 Selection screen allows the user to choose between the RS 232 or RS 485 specification for serial communication Note Disconnect the serial cable before changing RS 232 and RS 485 selection to prevent damage to the connected equipment In the Main Menu choose Instrument Controls gt Communication Settings gt RS 232 RS 485 Selection OTHER MEASUREMENTS gt NONE INT TEMP CHAMBER TEMP COOLER TEMP NO2 CNV TEMP CHAMBER PR
263. the first will be read and inserted in the text field of the line Value String This is followed by a possible string enclosed in quotes This is used to place a string into the value field Value Source The value source which is the item or word number in the DATA ERec response appears next This is followed by an optional bitfield designator The datum identified by the value source can be printed as a string s hexadecimal x decimal d or floating point f or binary b number Typically bitfield extractions are only done for decimal or hexadecimal numbers Floating point numbers can be followed with an optional precision specifier which will be used as an argument to printf s f format e g a field of 4 would be translated into the printf command of 3f Alternately the special character can precede the precision specifier this causes an indirection on the precision specifier which now becomes a field number This is useful when formatting for example numbers which have varying precision depending on the mode of the instrument Binary numbers can also have an optional precision specifier which is used to determine how many bits to print For example the specifier b4 will print the lowest four bits of the parsed number There are serious restrictions on where an s field may appear currently sources 1 and 2 must be s and no others may be s Alarm Information The value source is followed by
264. the following procedure to unpack and inspect the instrument 1 Remove the instrument from the shipping container and place it on a table or bench that allows easy access to both the front and rear 2 Remove the cover to expose the internal components Equipment Damage Do not attempt to lift the instrument by the cover or other external fittings Installation Setup Procedure 2 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific 3 Remove any packing material 4 Check for possible damage during shipment 5 Check that all connectors and circuit boards are firmly attached 6 Re install the cover Setup Procedure Use the following procedure to setup the instrument 1 Connect the sample line to the SAMPLE bulkhead on the rear panel Figure 2 1 Ensure that the sample line is not contaminated by dirty wet or incompatible materials All tubing should be constructed of FEP Teflon 316 stainless steel borosilicate glass or similar tubing with an OD of 1 4 inch and a minimum ID of 1 8 inch The length of the tubing should be less than 10 feet Figure 2 1 Model 42i High Level Rear Panel Installation Setup Procedure Thermo Fisher Scientific Model 42i High Level Instruction Manual 2 3 Note Gas must be delivered to the instrument at atmospheric pressure It may be necessary to use an atmospheric bypass plumbing arrangement as shown in Figure 2 2 if gas pressure is greater than atmospheric pressure
265. tific Model 42i High Level Instruction Manual 3 59 Decimal Places The Decimal Places screen allows the user to select how many digits are displayed to the right of the decimal from 0 to 6 with a default of 2 In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Decimal Places Use and to increment or decrement the value Press to save the new value Number of Table Points The Number of Table Points screen allows the user to select how many points are used in the conversion table The points range from 2 to 10 with a default of 2 In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Table Points Use and to move the cursor up and down Press to save the new value DECIMAL PLACES CURRENTLY 2 SET TO 3 INC DEC SAVE VALUE RANGE AVG DIAGS ALARM NUMBER OF TABLE POINTS CURRENTLY 2 SET TO 10 INC DEC SAVE VALUE RANGE AVG DIAGS ALARM Operation Instrument Controls Menu 3 60 Model 42i High Level Instruction Manual Thermo Fisher Scientific Table Point The Table Point submenu allows the user to set up an individual table point In the Main Menu choose Instrument Controls gt I O Configuration gt Analog Input Config gt Select Channel gt Point 1 10 Volts The Volts screen allows the user to set the input voltage for the selected
266. ting Connector Pin Descriptions Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 21 4 5V 5 Ground 6 Measurement Frequency Output 7 Amplifier Zero Adjust Voltage 8 SPI Input 9 SPI Clock 10 SPI Board Select Table 6 9 Temperature Control Board Connector Pin Descriptions Connector Label Reference Designator Pin Signal Description INTERFACE J1 1 Bench Temperature Input 2 Ground 3 15V 4 Converter Heater On Off 5 Converter Temperature Input 6 15V_PWR AC INPUT J2 1 AC HOT 2 AC NEUT BENCH J3 1 Bench Heater AC Output 2 Bench Heater AC Return 3 Ground 4 Bench Thermistor CONVERTER J4 1 Ground 2 Converter Heater AC Output 3 Converter Heater AC Return CONV TC J5 1 Converter Thermocouple TC 2 Converter Thermocouple TC SS TEMP J6 1 SS Temperature Range Jumper A 2 SS Temperature Range Jumper B Table 6 8 Input Board Connector Pin Descriptions continued Connector Label Reference Designator Pin Signal Description Troubleshooting Service Locations 6 22 Model 42i High Level Instruction Manual Thermo Fisher Scientific Service Locations For additional assistance service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com aqi 1 866 282 0430 Toll Free 1 508 520 0430 International
267. to calibration screens are displayed if the auto calibration option is installed and function the same way In the Main Menu choose Alarms gt Zero or Span Autocal NO NO2 and NOx Concentration The NO Concentration screen displays the current NO concentration and sets the minimum and maximum alarm limits Acceptable alarm limits range from 0 to 5 000 ppm and 0 to 7 500 mg m3 The minimum alarm may be programmed as a floor trigger alarm is triggered when the concentration falls below the minimum value or a ceiling trigger alarm is triggered when the concentration goes above the minimum value If the NO concentration goes beyond either the minimum or maximum limit an alarm is activated The word ALARM appears in the Run screen and in the Main Menu The NO2 and NOx Concentration screens function the same way In the Main Menu choose Alarms gt NO NO2 or NOx Concentration MAX ZERO CHECK OFFSET CURRENTLY 10 00 SET TO 11 00 CHANGE VALUE SAVE VALUE RANGE AVG DIAGS ALARM ZERO AUTO CALIBRATION ALARM OK RESPONSE 5 00 RANGE AVG DIAGS ALARM Operation Alarms Menu Thermo Fisher Scientific Model 42i High Level Instruction Manual 3 81 Min and Max NO NO2 and NOx Concentration Limits The Minimum NO Concentration alarm limit screen is used to change the minimum NO concentration alarm limit The minimum and maximum NO NO2 and NOx concentration alarm limit screens function the same way
268. ts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter Preventive Maintenance Pump Rebuilding Thermo Fisher Scientific Model 42i High Level Instruction Manual 5 5 Pump Rebuilding Use the following procedure to rebuild the pump Figure 5 2 To replace the pump see Pump Replacement in the Servicing chapter Equipment Required Pump repair kits two repair kits required per pump Allen wrench 3 mm and 4 mm Wrench 9 16 inch Needlenose pliers 1 Turn instrument off unplug the pump power cord and disconnect the pump plumbing from the instrument 2 Note the orientation of the pump head top plate for later reassembly Using a 3 mm Allen wrench remove the eight socket head screws and washers securing the pump head top plate 3 Discard the old Teflon7 gasket 4 Note the orientation of the diaphragm head for later reassembly Remove the diaphragm head Using a 4 mm Allen wrench remove the four socket head screws securing the diaphragm head to the pump body 5 Insert the tips of blunt needlenose pliers in the dimples of the clamping disk then loosen and remove the clamping disk 6 Remove and discard the old Teflon7 diaphragm 7 Insert the clamping disk into the new Teflon7 diaphragm three pieces and screw the clamping disk into the pump Do not o
269. tting should be replaced only hand tight 9 Re install the cover 10 Connect the power cord and turn the instrument ON Cajon Fitting Capillary Capillary O Ring Reaction Chamber Front Preventive Maintenance Thermoelectric Cooler Fins Inspection and Cleaning 5 4 Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermoelectric Cooler Fins Inspection and Cleaning Use the following procedure to inspect and clean the thermoelectric cooler fins 1 Turn the instrument off and unplug the power cord 2 Remove the instrument cover 3 Locate the PMT cooler refer to Figure 7 6 in the Servicing chapter 4 Blow off the cooler fins using clean pressurized air It may be more convenient to vacuum the cooler fins In either case make sure that any particulate accumulation between the fins has been removed 5 If necessary use a small brush to remove residual particulate accumulation 6 Replace the cover 7 Connect the power cord and turn the instrument ON Fan Filters Inspection and Cleaning Use the following procedure to inspect and clean the fan filters 1 Remove the two fan guards from the fans and remove the filters 2 Flush the filters with warm water and let dry a clean oil free purge will help the drying process or blow the filters clean with compressed air 3 Re install the filters and fan guards Equipment Damage Some internal components can be damaged by small amoun
270. ttings gt Select Relay gt Instrument State gt Alarms Use and to scroll through a list of choices Press to save the new selection for the relay Non Alarm The Non Alarm status screen allows the user to select the non alarm status for the selected relay output The selected item is shown by lt after it Items displayed are determined by the options installed In the Main Menu choose Instrument Controls gt I O Configuration gt Output Relay Settings gt Select Relay gt Instrument State gt Non Alarm Use and to scroll through a list of choices Press to save the new selection for the relay ALARM STATUS ITEMS gt NONE GEN ALARM lt NO CONC MAX NO CONC MIN NO2 CONC MAX NO2 CONC MIN NOx CONC MAX RANGE AVG DIAGS ALARM NOx CONC MIN INT TEMP CHAMB TEMP COOLER TEMP NO2 CV TEMP PRESSURE FLOW OZONE FLOW MB STATUS MIB STATUS I O BD STATUS CONC ALARM Operation Instrument Controls Menu 3 52 Model 42i High Level Instruction Manual Thermo Fisher Scientific Digital Input Settings The Digital Input Settings menu displays a list of the 16 digital inputs available and allows the user to select the logic state and instrument parameter for the relay selected Note The digital inputs must be asserted for at least one second for the action to be activated In the Main Menu choose Instrument Controls gt I O Configuration gt Digital Input Settings Logic St
271. uction Manual Thermo Fisher Scientific PMT High Voltage Power Supply Replacement on page 7 15 Reaction Chamber Cleaning or Removal on page 7 18 NO2 to NO Converter Replacement on page 7 20 Solenoid Valve Replacement on page 7 22 Ozonator Assembly Replacement on page 7 23 Ozonator Transformer Replacement on page 7 25 Input Board Replacement on page 7 25 DC Power Supply Replacement on page 7 28 Analog Output Adjustment on page 7 31 Pressure Transducer Assembly Replacement on page 7 32 Pressure Transducer Calibration on page 7 34 Temperature Control Board Replacement on page 7 36 Fuse Replacement on page 7 38 Scrubber Replacement on page 7 38 I O Expansion Board Optional Replacement on page 7 39 Digital Output Board Replacement on page 7 40 Motherboard Replacement on page 7 41 Measurement Interface Board Replacement on page 7 42 Front Panel Board Replacement on page 7 43 LCD Module Replacement on page 7 44 Service Locations on page 7 46 Servicing Safety Precautions Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 3 Safety Precautions Read the safety precautions before beginning any procedures in this chapter WARNING The service procedures in this manua
272. ue 6 Disconnect the pump from the pressure transducer 7 Press to return to the Pressure Sensor Cal screen 8 At the Pressure Sensor Cal screen press to select Span The Calibrate Pressure Span screen appears 9 Wait at least 10 seconds for the ambient reading to stabilize use and to enter the known barometric pressure and press to save the pressure value 10 Reconnect the instrument tubing to the pressure transducer 11 Install the cover Servicing Temperature Control Board Replacement 7 36 Model 42i High Level Instruction Manual Thermo Fisher Scientific Temperature Control Board Replacement Use the following procedure to replace the temperature control board Figure 7 6 Equipment Required Temperature control board Small flat blade screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect all connectors from the temperature control board Use a small flat blade screwdriver to loosen the two screws securing the CONV TC cable Note that the red wire is towards the rear and the yellow wire is towards the front 3 Snap off the board from the board mounts 4 To install the temperature control board follow previous steps in reverse Ambient Temperature Calibration Use the following procedure to calibrate the ambient internal temperature for the instrument Equipment Required Calibrated thermometer or 10K 1 Resistor Equipment Damage Some interna
273. umber 4 bytes L parse a 32 bit unsigned number 4 bytes There is an optional single digit d which may follow any of the numeric fields which indicates that after the field has been parsed out the resulting value is to be divided by 10 d Thus the 16 bit field 0xFFC6 would be interpreted with the format specifier n3 as the number 0 058 Format Specifier for Front Panel Layout The subsequent lines in the ERec Layout response describe the appearance of the full panel The full instrument panel as it appears on the screen has two columns of lines Each line is composed of three major components 1 a text field 2 a value field and 3 a button None of these three components is required The text field contains statically displayed text C Link Protocol Commands Record Layout Definition B 46 Model 42i High Level Instruction Manual Thermo Fisher Scientific The value field displays values which are parsed out of the response to a DATA ERec command It also displays though background changes alarm status The button when pressed triggers input from either a dialog box or a selection list There are five kinds of buttons B I L T and N Each line in the layout string corresponds to one line on the display The layout string describes each of the three major fields as well as translation mechanisms and corresponding commands Text The first field in the layout string is the text It is delimited by a The string up to
274. ure The pressure is measured by a pressure transducer at the reaction chamber In the Main Menu choose Diagnostics gt Pressure Flow The Flow screen read only displays the bypass flow rate if the bypass flow option is installed and ozonator flow rate The flows are measured by internal flow sensors For more information see Chapter 1 Introduction In the Main Menu choose Diagnostics gt Flow TEMPERATURES gt INTERNAL 28 6 oC CHAMBER 49 0 oC COOLER 2 8 oC NO2 CONVERTER 625 0 oC NO2 CONV SET 625 0 oC RANGE AVG DIAGS ALARM CHAMBER PRES 33 8 mmHg RANGE AVG DIAGS ALARM Operation Diagnostics Menu 3 68 Model 42i High Level Instruction Manual Thermo Fisher Scientific Analog Input Readings The Analog Input Readings screen read only displays the 8 current user scaled analog readings if the I O expansion board option is installed In the Main Menu choose Diagnostics gt Analog Input Readings Analog Input Voltages The Analog Input Voltages screen read only displays the 8 raw analog voltage readings if the I O expansion board option is installed In the Main Menu choose Diagnostics gt Analog Input Voltages FLOW 0 531 LPM OZONATOR FLOW OK RANGE AVG DIAGS ALARM ANALOG INPUT READINGS gt CO 10 2 PPM SO2 18 2 PPB CO2 250 PPM FL1 20 42 LPM WND 9 86 V FL2 1 865 LPM IO7 0 0 V RANGE AVG DIAGS ALARM ANALOG INPUT VOLTAGES gt ANALOG IN 1 6 24 V ANALOG IN 2 4
275. urrent selections in scratch pad into stream list B 22 copy srec to sp Sets copies current srec selection into the scratch pad B 22 copy stream to sp Sets copies current streaming data selection into the scratch pad B 22 custom Reports sets defined custom range concentration B 30 date Reports sets current date B 33 Table B 1 C Link Protocol Commands continued Command Description Page C Link Protocol Commands Commands Thermo Fisher Scientific Model 42i High Level Instruction Manual B 5 default params Sets parameters to default values B 34 dhcp Reports sets state of use of DHCP B 37 diag volt iob Reports diagnostic voltage level for I O expansion board B 16 diag volt mb Reports diagnostic voltage level for motherboard B 16 diag volt mib Reports diagnostic voltage level for measurement interface board B 16 dig in Reports status of the digital inputs B 41 din Reports sets digital input channel and active state B 41 do down Simulates pressing down pushbutton B 27 dout Reports sets digital output channel and active state B 42 dtoa Reports outputs of the digital to analog converters per channel B 42 en enter Simulates pressing enter pushbutton B 27 er Returns a brief description of the main operating conditions in the format specified in the commands B 18 erec Returns a brief description of the main operating conditions in the format specified in the command B 18 erec
276. ve input or high voltage supply Unplug power cord Check that cables are connected properly Check cable resistance Analyzer not calibrated Recalibrate Defective 15 volt Check supply voltages Diagnostics Menu Calibration drift Dryer to ozonator depleted Replace Line voltage fluctuations Check to see if line voltage is within specifications Defective pump Rebuild pump Troubleshooting Troubleshooting Guides Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 3 Unstable NO or NO2 source Replace Clogged capillaries Unplug power cord Clean or replace capillary Clogged sample air filter Replace filter element Excessive noise Defective or low sensitivity PMT Unplug power cord Remove PMT Install known good PMT Plug in power cord Check performance Defective input board Replace board Defective cooler Check temperature less than 2 C at Tamb 25 C Non linear response Incorrect calibration source Verify accuracy of multipoint calibration source gas Leak in sample probe line Check for variable dilution Excessive response time Partially blocked sample capillary Unplug power cord Clean or replace capillary Hang up blockage in sample filter Change element Improper converter operation Questionable calibration gas Verify accuracy Converter temperature too high or too low Temperature should be approximately 325 C Low line voltage Check to
277. ver tighten Equipment Damage Some internal components can be damaged by small amounts of static electricity A properly grounded antistatic wrist strap must be worn while handling any internal component For more information about appropriate safety precautions see the Servicing chapter Preventive Maintenance Pump Rebuilding 5 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Figure 5 2 Rebuilding the Pump 8 Remove the screw and nut securing the flapper valves and remove and discard old flapper valves Preventive Maintenance Pump Rebuilding Thermo Fisher Scientific Model 42i High Level Instruction Manual 5 7 9 Install the new flapper check that the screw head and not the washer is on the smooth side of the pump and check that the flappers are completely flat and straight 10 Align the diaphragm head correctly as noted in Step 2 and secure with the four socket head screws 11 Place the new Teflon7 gasket over the pump head so that the eight screws holes are aligned 12 Replace the top plate and secure with the eight screws and washers being sure that the Teflon7 gasket stays in place 13 Reconnect the plumbing to the instrument and plug in the pump power cord Preventive Maintenance Pump Rebuilding 5 8 Model 42i High Level Instruction Manual Thermo Fisher Scientific Thermo Fisher Scientific Model 42i High Level Instruction Manual 6 1 Chapter 6 Troubleshooting This instru
278. vice Mode to ON c Press gt to return to the Main Menu d Continue the procedure at Step 2 3 At the Analog Output Cal screen press to scroll to the channel Voltage Channel 1 6 corresponding to the rear panel terminal pin where the meter is connected then press The Analog Output Cal screen appears 4 With the cursor at Calibrate Zero press The Analog Output Cal line displays Zero 5 Use until the meter reads 0V then press to save the value 6 Press to return to the Analog Output Cal screen The Analog Output Cal screen appears 7 Press to select Calibrate Full Scale The Analog Output Cal Span screen appears 8 Use until the meter reads the value shown in the Set Output To line then press to save the value Pressure Transducer Assembly Replacement Use the following procedure to replace the pressure transducer assembly Figure 7 16 Equipment Required Pressure transducer assembly Servicing Pressure Transducer Assembly Replacement Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 33 Philips screwdriver 1 Turn instrument OFF unplug the power cord and remove the cover 2 Disconnect plumbing from the pressure transducer assembly Note the plumbing connections to facilitate reconnection 3 Disconnect the pressure transducer cable Figure 7 16 Replacing the Pressure Transducer 4 Remove the two pressure transducer assembly retaining screws
279. vicing chapter before performing any actions listed in this chapter Troubleshooting Troubleshooting Guides 6 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific Troubleshooting Guides The troubleshooting guides presented in this chapter are designed to help isolate and identify instrument problems Table 6 1 provides general troubleshooting information and indicates the checks that you should perform if you experience an instrument problem Table 6 2 lists all the alarm messages you may see on the graphics display and provides recommendations about how to resolve the alarm condition Table 6 1 Troubleshooting General Guide Malfunction Possible Cause Action Does not start up No power Check that the instrument is plugged into the proper source 115 or 220 VAC 50 or 60Hz Check instrument fuses Power supply Check voltages using a digital voltmeter Digital electronics Unplug power cord Check that all boards are seated properly Unplug power cord Remove one board Install known good board Repeat until faulty board is detected No output signal or very low output No sample gas reaching the analyzer Check input sample flow Blocked sample capillary Unplug power cord Clean or replace capillary No ozone reaching the reaction chamber Check the Instrument Control menu to see if the ozonator is ON If it is ON check dry air supply No output signal Disconnected or defecti
280. wer failure lt ASCII 170 gt T I M E lt CR gt C Link Protocol Commands Commands Thermo Fisher Scientific Model 42i High Level Instruction Manual B 3 Table B 1 lists the 42i High Level C Link protocol commands The interface will respond to the command strings outlined below Table B 1 C Link Protocol Commands Command Description Page addr dns Reports sets domain name server address B 36 addr gw Reports sets default gateway address B 36 addr ip Reports sets IP address B 36 addr nm Reports sets netmask address B 37 alarm chamber temp max Reports sets chamber temperature alarm maximum value B 12 alarm chamber temp min Reports sets chamber temperature alarm minimum value B 12 alarm conc no max Reports sets current NO concentration alarm maximum value B 13 alarm conc no min Reports sets current NO concentration alarm minimum value B 13 alarm conc no2 min Reports sets current NO2 concentration alarm maximum value B 13 alarm conc no2 max Reports sets current NO2 concentration alarm minimum value B 13 alarm conc nox max Reports sets current NOx concentration alarm minimum value B 13 alarm conc nox min Reports sets current NOx concentration alarm maximum value B 13 alarm converter temp max Reports sets NO2 converter temperature alarm maximum value B 13 alarm converter temp min Reports sets NO2 converter temperature alarm minimum value B 14 alarm cooler temp max Reports sets
281. x Screws 2 Assembly Bracket Screws 2 Input Board Screws 4 Input Box Input Board Servicing Input Board Calibration Thermo Fisher Scientific Model 42i High Level Instruction Manual 7 27 7 Re install the measurement bench Refer to Removing the Measurement Bench and Lowering the Partition Panel in this chapter 8 Perform an input board calibration See the Input Board Calibration procedure that follows Input Board Calibration After replacing the input board use the following procedure to calibrate the input board 1 From the Main Menu press to scroll to Service gt press gt to scroll to Input Board Calibration gt and press The Input Board Calibration screen appears If the Service Mode is not displayed on the Main Menu use the following procedure to display it a At the Main Menu press to scroll to Instrument Controls gt press gt to scroll to Service Mode gt and press The Service Mode screen appears b Press to toggle the Service Mode to ON c Press gt to return to the Main Menu d Continue the procedure at the beginning of Step 1 to access the Set PMT Voltage screen 2 At the Input Board Calibration screen press to select Manual Input Cal and press to calibrate The screen displays the frequency at GAIN 1 3 Make a note of the FREQ value displayed at GAIN 1 then press or to change the GAIN to 100 WARNING The service procedures in this
282. xamples of the alarm commands Diagnostics on page B 16 describes and gives examples of the diagnostic commands Datalogging on page B 17 describes and gives examples of the datalogging commands Calibration on page B 24 describes and gives examples of the calibration commands Keys Display on page B 27 describes and gives examples of the keys and display commands Measurement Configuration on page B 29 describes and gives examples of the measurement configuration commands Hardware Configuration on page B 32 describes and gives examples of the hardware commands Communications Configuration on page B 36 describes and gives examples of the communication commands C Link Protocol Commands Instrument Identification Number B 2 Model 42i High Level Instruction Manual Thermo Fisher Scientific I O Configuration on page B 40 describes and gives examples of the I O commands Record Layout Definition on page B 44 describes and gives examples of the record layouts Instrument Identification Number Each command sent to the analyzer must begin with the American Standard Code for Information Interchange ASCII symbol or byte value equivalent of the instrument s identification number plus 128 For example if the instrument ID is set to 25 then each command must begin with the ACSII character code 153 decimal The analyzer ignores any c
283. y Stainless Steel 110VAC 9467 Stainless Steel Converter Cartridge 9456 Pump 120VAC 60Hz 8079 Pump 110VAC 50Hz 9457 Pump 220VAC 50Hz 8500 Pump 220VAC 60Hz 8080 Pump 100VAC 50 60Hz 9464 Pump Repair Kit 101055 00 AC Receptacle Assembly include in this parts list 101681 00 Power Supply Assembly 24VDC w Base Plate and Screws 100907 00 Fan 24VDC 101905 00 Fuse 250VAC 4 0 Amp SlowBlow for 100VAC and 110VAC models 101904 00 Fuse 250VAC 2 0 Amp SlowBlow for 220 240VAC models 101399 00 Transformer 220 240VAC Optional 101863 00 Transformer 100VAC Optional 4121 Capillary ozone 0 01 inch ID 4113 Capillary sample 0 005 inch ID 4119 Capillary sample 0 008 inch ID red 4126 Capillary bypass flow option 0 020 inch ID purple 4800 O ring Capillary pk 10 8630 Filter Guard Assembly w foam 4338 Optical Filter Kit 6556 Optical Filter Assembly 101562 00 Terminal Block and Cable Kit DB25 101556 00 Terminal Block and Cable Kit DB37 Table 7 1 Model 42i High Level Replacement Parts continued Part Number Description Servicing Cable List 7 6 Model 42i High Level Instruction Manual Thermo Fisher Scientific Cable List Table 7 2 describes the Model 42i High Level spare cables See the Troubleshooting chapter for associated connection diagrams and board connector pin descriptions Table 7 2 Model 42i High Level Cables Part Number

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