1738 Operators Manual
Contents
1. 0057 Number of the alarm being viewed Total number of alarms logged Use the OPTION up and down to scroll through the alarm events that have been saved in the alarm log The alarm event will be transferred to the alarm log when the alarm has been cleared The alarms are stored in the alarm log in chronological order However it may be seen that the current alarm number will skip some numbers These numbers have been reserved for alarm events that are still current When the alarm cause has been removed these alarm events will be transferred to the alarm log 6 2 Alarm Relays The common alarm relay is used to monitor faults within the transmitter and the probe The list of events that will cause the common alarm relay to be activated is shown in chapter 6 3 Common Alarms The relay contacts will be open circuit if there is a current alarm condition The other three alarm relays are user defined and are used to monitor the process The function of the process alarm relays is user selectable See chapter 6 4 Selectable Process Alarms and the Technical Manual for further information 6 3 Common Alarms The events that drive the common alarm relay are 1 Probe 1 High Impedance 2 Probe 2 High Impedance Oxygen probe or electrode failure high impedance This alarm is inhibited when the probe temperature is under 650 C 1200 F 3 Probe 1 Heater Fail 4 Probe 2 Heater Fail In the first 20 minutes2. Oxygen Display Units Oxygen Saved Setup Menu The top line of the display that shows the oxygen measurement can be displayed in either or ppm see chapter 4 1 Display OPTIONS Oxygen Oxygen PPM 5 2 4 Damping Factor eomz 1730 SERIES TRANSMITTER 05 Damping Factor 5x Samples Saved Setup Menu The oxygen measurement can be damped if there are annoying fluctuations in the process gas Of course any damping will slow down the reaction time of the transmitter The larger the number selected here the steadier the measurement will be The damped oxygen value is also used in the calculation of all other parameters that are based on the oxygen value RANGE No Damping to 10 5x Samples is set after a COLD START 5 2 5 Process Alarms Ory 1730 SERIES TRANSMITTER 06 Process Alarms Disabled Setup Menu This function allows the operator to Disable process alarms Setup functions 7 to 14 show the alarm trip points that have been set in the transmitter OPTIONS Enabled Disabled i April 2014 Etech Operators Manual 1738 Dew Point Transmitter RO 15 This page has been intentionally left blank Operators Manual Etech April 2014 16 OS 1738 Dew Point Transmitter The 1738 has 4 alarm relays and a built in alarm annunciator and an alarm log When an alarm occurs and the ALARM up key is pressed the transmitter goes into the alarm display mode In this mode some of the
3. Road Tel 61 3 9585 2833 Cheltenham Fax 61 3 9585 2844 Victoria 3192 Email info novatech com au Australia Web site http www novatech com au Novatech Controls or their authorised dealers should carry out all maintenance and service on the product Novatech Controls can accept no liability whatsoever for any loss or damage caused by service or maintenance by unauthorised personnel This manual is intended only to assist the reader in the use of the product and therefore Novatech Controls shall not be liable for any loss or damage whatsoever arising from the use of any information or particulars in or any error or omission in this manual or any incorrect use of the product Operators Manual CN Watech April 2014 2 EA 1738 Dew Point Transmitter This manual is intended to be used by the operator It is not intended to describe how the 1738 Dew Point Transmitter should be connected configured or serviced If more detailed information is required than is shown in this manual the 1738 Technical Manual should be used This is supplied with each transmitter and is also available on the Novatech web site at www novatech com au It is assumed in this manual that the transmitter has been installed by competent personal and that the wiring to the main power supply the oxygen probe and all the associated signal devices complies with the local safety codes and regulations 1 1 Cautions Please read the safety information below before connecting
4. alarm threshold level set in the Calibration Menu for a period of time exceeding the delay time for the particular alarm 25 Dew Point Deviation The difference between the dew point level measured on probe 1 and the dew point level measured on probe 2 is greater than the alarm threshold level set in the Calibration Menu 26 Pre React 1 Warning 27 Pre React 2 Warning 28 Pre React 1 Alarm 29 Pre React 2 Alarm The measured pre reactive oxygen on the indicated probe has exceeded the alarm threshold level set in the Calibration Menu for a period of time exceeding the delay time for the particular alarm There are two alarm thresholds named warning and alarm which can be set to differing levels and the alarm conditions set to trigger individual output relays 6 5 Warning Messages 27 Probe 1 Temperature Low 28 Probe 2 Temperature Low The probe temperature is under 650 C 1200 F The oxygen reading is therefore invalid If the probe heater has been on for more than 20 minutes and the temperature is less than 650 C 1200 F a Probe 1 2 Heater Fail alarm will occur There will be a flashing T symbol on the bottom left hand corner of the display until the temperature of the probe s is over 650 C 1200 F NOTE The Probe 1 2 Temperature Low function is also used with unheated probes to show that the probe temperature is below 650 C 1200 F when the process temper
5. in Setup Mode When the SETUP RUN key is pressed once the transmitter will go into the SETUP mode For information about the additional user selectable options see the 1738 Technical Manual The following key functions are then available in the SETUP mode SETUP RUN key Pressing this key once will put the transmitter into the SETUP mode The function of all the keys will then change to the functions that they have in the SETUP mode Pressing the SETUP RUN key again will return the transmitter to the RUN mode or it will return automatically one minute after the last key press FUNCTION UP FUNCTION DOWN Keys These two keys allow the selection of the required setup function from the list shown at the start of chapter 5 1 SETUP mode OPTION UP OPTION DOWN keys These two keys allow for the selection of the options that are available in the selected function See the details of these in chapter 5 2 Setup mode details ENTER key The ENTER key saves the selected option If the ENTER key is not pressed when a new option is chosen the previous option will be retained SENSOR IMPEDANCE key When this key is pressed the transmitter will measure the impedance of the sensor in the probe s This will only happen if the burner is enabled terminals 10 and 11 and the probe temperature is over 700 C 1290 F AUTO CALIBRATE key When this key is pressed the transmitter will calibrate the analog output channels This is done by directing the
6. keys take on a special function Key text RUN mode ALARM mode SETUP RUN Return to RUN mode DISPLAY FUNCTION up Next alarm time DISPLAY FUNCTION down Previous alarm time ALARM OPTION up Enter ALARM display mode Next Alarm ALARM OPTION down Enter ALARM log mode Previous Alarm ALARM ACCEPT ENTER Accept alarm When the alarm mode has been entered the SETUP light flashes once a second All relays have fail safe alarm contacts That is When the transmitter is off the contacts are open circuit When the transmitter is on but there are no alarms the contacts are closed When there is a current alarm event the contacts are open circuit All alarms drive the alarm light on the front door The light will be off if there are no alarms current The light will flash if there is a current alarm that has not been accepted The light will be on steady if there are current alarm s that have been accepted The light will flash faster as more alarms occur 6 1 Checking and Accepting an Alarm When a new alarm occurs either a process alarm or an alarm that will appear in the common alarm list the ALARM light will flash The more new alarms there are the faster the light will flash To check the cause of the alarm 1 Press the ALARM up key This will put the transmitter into the current alarm mode The SETUP light will flash 2 The alarm screen will appear displaying the cause of the alarm on the top line Alarm Description Time title T
7. of power being applied to the heater after being switched on this alarm will not occur but a T display will be shown on the bottom of the display If an ADC alarm occurs the heaters will automatically be turned off If the probe has not reached 650 C 1200 F in 20 minutes the Probe 1 2 Heater Fail alarm will be raised Operators Manual Etech April 2014 18 A 1738 Dew Point Transmitter 5 Probe 1 TC Open Circuit 6 Probe 2 TC Open Circuit Probe thermocouple is open circuit The heater in heated probes will switch off 7 Auxiliary TC Open Circuit Stack thermocouple is open circuit If the thermocouple is not needed select NO T C for Aux TC Type or place a short circuit between terminals 7 amp 8 8A Reference Air Pump Fail The reference air pump in the transmitter is either disconnected or is drawing lt 20mA 8B Reference Air Pump Overload The reference air pump in the transmitter has drawn gt 300mA The power will be turned off to the pump to avoid damage to the pump driving circuit The 1738 will attempt to restart the pump every minute To force a restart disconnect the pump and reconnect tt 9 ADC Calibration Fail The analog to digital converter has been found to fall outside the normal calibration specifications In this case the probe heater will automatically be turned off 10 Output 1 Failure 11 Output 2 Failure The digital to analog and voltage i
8. output current away from the output terminals terminals 12 amp 13 and 14 amp 15 and directing the current back into the transmitter input The transmitter will then calculate a zero and a span calibration factor for each of the output channels The output calibration will only happen if the channel is not set to manual output calibration See Technical Manual for more details 4 3 3 Information Screen The 1738 Dew Point Transmitter has an information screen available to the user to allow more detailed information about the running of the transmitter to be easily read by the user The information available is 1 Model and version of the current firmware The date time that the firmware was compiled The maximum temperature that the transmitter has measured inside the cabinet Current date and time The time of all the next timed events Impedance test cal purge 1 cal purge 2 ADC calibration data analogue input calibration DAC calibration data analogue output calibration Probe temperature record probe 1 and 2 igor N The information screen is entered from the run mode by pressing and holding tte ALARM ACCEPT key and then pressing the SETUP key The first data appears at the top of the screen and there is a scroll bar down the left hand side The data can be scrolled through by using the DISPLAY up and down keys The data cannot be changed April 2014 WEN btech o Operators Manual 1738 Dew Point Transmitter A CONTROLS m m 41 Thi
9. power to the transmitter CAUTION 1 The probe heater is supplied with mains voltage This supply has electrical shock danger to maintenance personnel Always isolate the transmitter before working with the probe The EARTH wire green from a heated probe must ALWAYS be connected to earth CAUTION 2 Combustion or atmosphere control systems can be dangerous Burners must be mechanically set up so that in the worst case of equipment failure the system cannot generate explosive atmospheres This danger is normally avoided with flue gas trim systems by adjustment so that in the case of failure the appliance will not generate CO in excess of 400 ppm in the flue The CO level in the flue should be measured with a separate CO instrument normally an infrared or fuel cell type CAUTION 3 The oxygen probe is heated to over 700 C 1290 F and is a source of ignition Since raw fuel leaks can occur during burner shutdown the transmitter has an interlocking relay that removes power from the probe heater when the main fuel shut off valve power is off If this configuration does not suit or if it is possible for raw fuel to come into contact with a hot oxygen probe then the Model 1738 transmitter with a heated probe will not be safe in your application An unheated probe can be utilised in such applications however the oxygen readings are valid only above 650 C 1200 F CAUTION 4 The reducing oxygen signal from the transmitter and the associat
10. 1mV offset error will only change the reading by 0 1 If in any doubt about the correct offset value set it to 0 0mV The function 02 Probe 2 Offset will only appear if the transmitter has been configured for 2 probes 5 2 2 Lower Line Items POWER 1730 SERIES TRANSMITTER 03 Lower Line Items Probe 1 EMF Enabled Setup Menu This function allows the operator to change the items that are available to be displayed on the lower line of the transmitter when it is in the RUN mode If the word Enabled appears on the display for a selected lower line measurement option the measurement will be available to be shown on the display in the RUN more by scrolling through the list using the DISPLAY up and DISPLAY down keys A lower line selection can be Enabled or disabled by pressing the ENTER key OPTIONS Probe 1 Dew Point Probe 1 Pre Reactive Oxygen Probe 2 Dew Point Probe 2 Pre Reactive Oxygen Average Dew Point Probe 1 TC Temperature Probe 2 TC Temperature Probe 1 EMF Probe 2 EMF Probe 1 Impedance Probe 2 Impedance Probe 1 Oxygen Probe 2 Oxygen Average Oxygen Operators Manual 14 Average Pre Reactive Oxygen Auxiliary TC Temperature Ambient Temperature Ambient Relative Humidity Flue Pressure Runtime Service Date 4 20mA Output 1 4 20mA Output 2 tech April 2014 CONTROLS m uo 1738 Dew Point Transmitter 5 2 3 Oxygen Display Units Q POWER 1730 SERIES TRANSMITTER 04
11. 2 TC Temp i Probe 1 EMF Probe 2 EMF D 30 to 1350mV Probe 1 Impedance Probe 2 Impedance Probe 1 Oxygen Probe 2 Oxygen 1x10 to 100 Average Oxygen Di Probe 1 Pre Reactive Oxygen da 0 to 300k Q Probe 2 Pre Reactive Oxygen E 0 to 10 0 Average Pre Reactive Oxygen SI Auxiliary TC Temp Up to 1760 C 3200 F Ambient Temperature 0 to 70 C Ambient RH 5 to 95 Flue Pressure varies Runtime Service Date 4 20mA Output 1 4 20mA Output 2 SE ER Process variables for second probe or averaging of two probes are only available when the transmitter is configured with two probes enabled Operators Manual Etech April 2014 8 ne 1738 Dew Point Transmitter 4 DISPLAY AND KEYPAD The 1738 Dew Point Transmitter has a graphic display 8 keys that are accessed from the outside of the cabinet and 5 LED indicators to show the status of the transmitter All the keys have a dual function The black text on the key is the function while the transmitter is in the RUN mode and the white text on the key is the function in the SETUP mode The SETUP mode is accessed by pressing the SETUP key The transmitter will return to the RUN mode when the SETUP key is pressed again or one minute after the last key is pressed 1730 SERIES TRANSMITTER DISPLAY ALARM ALARM SETUP ACCEPT DISPLAY The front panel of the model 1738 dew point transmitter 4 1 Display The display is used to show the primary process variable clearly identified
12. 2 should be connected to the purge gas Gas 1 amp Gas 2 Solenoid 1 should be connected to calibration gas 1 and Solenoid 2 should be connected to calibration gas 2 Dual Probe Configuration Purge 1 amp Purge 2 Solenoid 1 should be connected to the purge gas on probe 1 and Solenoid 2 should be connected to the purge gas on probe 2 Gas 1 amp Gas 2 Solenoid 1 should be connected to calibration gas 1 and Solenoid 2 should be connected to calibration gas 2 The transmitter can also be configured to be in a MANUAL or AUTOMATIC purge and gas check mode The information on configuring the transmitter is contained in the 1738 Technical Manual April 2014 NWE tech Operators Manual 1738 Dew Point Transmitter BEES 21 7 1 Actions that Occur when the Gas Solenoid Keys are Pressed Purge and Gas check Number of mode probes Gas option Automatic Single Pressing the GAS 1 PURGE 1 key will start the timed gas check cycle on solenoid 1 to probe 1 Pressing the GAS 2 PURGE 2 key will start the timed filter purge cycle on solenoid 2 to probe 1 Single Pressing the GAS 1 PURGE 1 key will start the timed gas check cycle on solenoid 1 to probe 1 Pressing the GAS 2 PURGE 2 key will start the timed gas check cycle on solenoid 2 to probe 1 Pressing the GAS 1 PURGE 1 key will start the timed filter purge cycle on solenoid 1 to probe 1 Pressing the GAS 2 PURGE 2 key will start the timed filter ourge cycle on solenoid 2 to prob
13. 4 SEA 1738 Dew Point Transmitter
14. ages ssiinisidai ii ia 20 talco A e ste sessed se cece nets enter epee ats aa nee cdc E EE E iii 21 en 5 Bigne a S EELS eE E N IE E E a eee aie E rere ae ii 15 Display tee 9 UE ASA EE 13 A a rca A e E eE uo et encase 5 A EEN 11 Key Probe INP le iii 11 SIE E eee ee N eee eee eee eee 10 E E OE O IE TIA ITA E S 14 SA sli in 8 OUPUb ii 5 o inni 14 FSUE MO Enia 13 SI PESCA NS nn ERAR aaea rat 7 eo o o A 8 NERO A A nn pioli 15 Voltage Mains Gupphy Arrr rennn nn nrrenn nnn nrreennn mnnn renn 7 ET dl EE 3 April 2014 A Etech Operators Manual 1738 Dew Point Transmitter DS 23 Declaration of Conformity Application of Council Directives 2004 108 EC 2006 95 EC Standards to which conformity is declared EN50270 1999 Electromagnetic compatibility Electrical apparatus for the detection and measurement of combustible gases toxic gases or oxygen CFR47 FCC Part 15 Subpart B Class A Telecommunications Vibration and Shock IEC 68 2 2 IEC 68 2 3 Manufacturer s name Novatech Controls Pty Ltd Manufacturer s address 309 Reserve Road Cheltenham VIC 3192 AUSTRALIA Type of equipment Oxygen Transmitter Model Number 1730 Series Transmitter 1231 Oxygen Probe 1232 Oxygen Probe 1234 Oxygen Sensor I hereby declare that the equipment specified herein conforms to the above directive s and standards s in 2007 A Ara Full Name Fraser Chapman Position R amp D Manager Operators Manual CN lWatech April 2014 2
15. ariable can be one of the following options Dew Point DP Pre Reactive Oxygen PO Oxygen O2 4 3 Keypad There are 8 keys built into the decal on the outside of the door of the 1738 transmitter The key function is printed in BLACK and WHITE to identify the function of the key in either RUN mode or SETUP mode Key text RUN mode WHITE text SETUP mode BLUE BLACK text SETUP RUN Enter SETUP mode Return to RUN mode DISPLAY FUNCTION A Display scroll up Function scroll up DISPLAY FUNCTION V Display scroll down Function scroll down ALARM OPTION A Alarm scroll up Option scroll up ALARM OPTION V Alarm scroll down Option scroll down ALARM ACCEPT ENTER Alarm accept Enter GAS 1 PURGE 1 SENS IMP Gas 1 Purge 1 manual activate Probe impedance GAS 2 PURGE 2 AUTO CAL Gas 2 Purge 2 manual activate Auto calibrate 4 3 1 Keypad in RUN Mode When the transmitter is turned on and has gone through the start up procedure it will go to the RUN mode In this mode the top line of the display will show the oxygen measurement from probe 1 The other key functions are SETUP RUN Key Pressing this key once will put the transmitter into the SETUP mode The function of all the keys will then change to the functions that they have in the SETUP mode Pressing the SETUP RUN key again will return the transmitter to the RUN mode or it will return automatically one minute after the last key press DISPLAY UP DISPLAY DOWN Keys The dis
16. atech N CONTROLS PTY LTD Dew Point Transmitter Model 1738 Operators Manual Ma Aa e April 2014 TABLE OPGONTEN Susini is 1 USING THIS MANDA cti 3 La CALTONS alcalini 3 1 2 WARNING VB Oe Suar dia a tic a atinada 4 2 INTRODUCTION EE 5 TT e Ter ut LE 7 3 1 HARDWARE SPECIFICATIONS ccccececcececceccccececcececcecucaececececuececuececseaecaeausucaunecsenecsenecsuaeseuausuuaeaecscneseeceeaeees 7 3 2 OPERATIONAL SPECIFICATIONS ccsceccececcececcececcecaccecucuecucuececuececuuaecseaececaesucusecsuseceuaessuauseeaesueaesecseneseuaeeaeees 8 A DISPLAY AND KEYP AD dia 9 Se EE 9 AD TOP LINE DISPLAY ao dica 10 aE WEY PAO EEN 10 4 3 1 KEYPAD IN RUN MODE load 10 4 3 2 KEYPAD IN SETUP MOO 11 4 3 3 INFORMATION SCREEN a ici 11 5 SETUP 0 RE 13 5 1 SETUP MODE FUNCTION SUMMARY sccececcececcececccceccceccccecuececueaecueueceeausecauaucuesecseaucuuaucueeseeausecsuneseuaecass 13 5 2 SETUP MODE pen HI EE 13 5 2 0 TO CHANGE AN OPTION IN THE SETUP MENU 13 5 2 1 PROBE T amp PROBE Os EE 14 PZ 2 O WE LNE TE EEN 14 De AE D EEA E EE 15 5 2 4 DAMPING FACTOR EE EE 15 DITA ROCES S MARS ege 15 TA A SENTII iraniana 17 6 1 CHECKING AND ACCEPTING AN ALARDM cccececcececcececcececcecuccececuececaececeuaucueuucucausecsenecsuaucueaesseausucauneseuaecess 17 6 1 1 CURRENT ALARMS ii aida 18 Dia AAN BEE 18 6 2 ALARM RELAYS EE 18 6 3 COMMON ALARMS EE 18 6 4 SELECTABLE PROCESS ALARMG ccccce
17. ature falls below this level 29 Cal 1 in Progress 30 Cal 2 in Progress A calibration check is occurring either manual or automatic mode 31 Purge 1 in Progress 32 Purge 2 in Progress A probe purge is occurring either manual or automatic mode Operators Manual Etech April 2014 20 jari 1738 Dew Point Transmitter The Novatech oxygen sensor that is used in the Novatech oxygen probe is extremely predictable stable and reliable For this reason the calibration of a Novatech oxygen system does not require the use of calibration gases However all Novatech oxygen probes have a built in gas connection that does allow the accuracy of the probe to be checked This chapter describes the operation of this gas checking system For further details see the 1738 Technical Manual The 1738 has a timer and solenoid driving system that can be configured to admit a certified calibration gas into the probe or an air supply to purge the probe filters through the gas connection Both the calibration gas and the filter purge gas must be piped to the port on the probe labelled CAL PURGE There are two solenoids drivers in the 1738 transmitter They can be used for a variety of combinations of gas checking and probe purging functions The available options depend on the way that the transmitter has been configured Single Probe Configuration Gas 1 Purge 2 Solenoid 1 should be connected to calibration gas and Solenoid
18. cececcccececscaccecacscacaucesecseaccuceuscseauaesanseaeausasscseaucusacseseauaesecsnavausenscess 20 6 5 WARNING MESSAGES 0 rra nana 20 7 GAS CALIBRATE AND PURGE enen en KEEN KEEN KEN ENKE KEEN KEE KEEN KEEN KEE KE KEEN KEE KEEN KEEN KEEN KN KE KEEN un 21 7 1 ACTIONS THAT OCCUR WHEN THE GAS SOLENOID KEYS ARE HDpEeerEn 22 0 23 April 2014 Etech Operators Manual 1738 Dew Point Transmitter CONTROLS mw 3 Copyright NOVATECH CONTROLS PTY LTD 2014 This manual describes the transmitter firmware version 1 04 April 2014 Neither the whole nor any part of the information contained in or the product described in this manual may be adapted or reproduced in any material form except with the prior written approval of Novatech Controls Pty Ltd Novatech The product described in this manual and products for use with it are subject to continuous developments and improvement All information of a technical nature and particulars of the product and its use including the information in this manual are given by Novatech in good faith However it is acknowledged that there may be errors or omissions in this manual A list of details of any amendments or revisions to this manual can be obtained upon request from Novatech Controls Technical Enquiries Novatech Controls welcome comments and suggestions relating to the product and this manual All correspondence should be addressed to Technical Enquiries Novatech Controls Pty Ltd 309 Reserve
19. e 2 Pressing the GAS 1 PURGE 1 key will start the timed gas check cycle on solenoid 1 to probe 1 Pressing the GAS 2 PURGE 2 key will start the timed gas check cycle on solenoid 2 to probe 2 Manual i Pressing the GAS 1 PURGE 1 key will turn on solenoid 1 to Automatic Automatic Automatic purge probe 1 for as long as the key is pressed Pressing the GAS 2 PURGE 2 key will turn on solenoid 2 to orobe 1 for as long as the key is pressed Pressing the GAS 1 PURGE 1 key will turn on solenoid 1 to pass calibration gas to probe 1 for as long as the key is pressed Pressing the GAS 2 PURGE 2 key will turn on solenoid 2 to pass calibration gas to probe 1 for as long as the key is Manual Pressing the GAS 1 PURGE 1 key will turn on solenoid 1 to purge probe 1 for as long as the key is pressed Pressing the GAS 2 PURGE 2 key will turn on solenoid 2 to orobe 2 for as long as the key is pressed MENTE Pressing the GAS 1 PURGE 1 key will turn on solenoid 1 to pass calibration gas to probe 1 for as long as the key is pressed Pressing the GAS 2 PURGE 2 key will turn on solenoid 2 to pass calibration gas to probe 2 for as long as the key is pressed Refer to the person responsible for the commissioning to find out how the transmitter has been configured Operators Manual CNW tech April 2014 22 ERAN 1738 Dew Point Transmitter 8 INDEX E 17 A Eege 17 Alarms unn NEE 18 le E E A 15 AS aperta 20 Alarms Warning Mess
20. ed alarm relay can be used as an explosive warning or trip This measurement assumes complete combustion If incomplete combustion is possible then this signal will read less reducing and should not be used as an alarm or trip A true excess combustibles analyser normally incorporating a catalyst or thermal conductivity bridge would be more appropriate where incomplete combustion is possible Also read the probe electrical shock caution in the probe heater interlock caution in chapter 4 7 of the Model 1738 Technical Manual CAUTION 5 FIL 3 filter If the optional FIL 3 has been fitted to the 1231 probe in this installation April 2014 NWE tech Operators Manual 1738 Dew Point Transmitter RITI 3 1 2 Warning Symbols Danger high voltage Risk of electrical shock Caution hot surface Caution risk of danger See additional information in the manual Operators Manual NE tech April 2014 4 ES 1738 Dew Point Transmitter The Novatech 1738 Dew Point Transmitter provides in situ measurement for one or two oxygen probes in annealing and other furnaces with protective atmospheres of hydrogen nitrogen The transmitter provides local indication of oxygen and dew point as well as several other process related variables The model 1738 Dew Point Transmitter is based on the well known model 1638 transmitter It includes a number of hardware and software improvements such as a graphic display larger characters faster microprocessor si
21. f the keys are now the operations written in white on the keypad The menu name is written at the bottom of the display 2 When the SETUP mode has been selected the required function can be found by using the FUNCTION UP and FUNCTION DOWN keys 3 The options available for that function can be seen by using the OPTION UP and OPTION DOWN keys 4 When the required option is on the display the ENTER key is used to save that option 5 Press the SETUP RUN key to return to the RUN mode The details of each function are given below NOTE An asterisk next to a listed option denotes default state after a COLD START April 2014 NWE tech Operators Manual 1738 Dew Point Transmitter SES 13 5 2 1 Probe 1 Probe 2 Offset POWER 1730 SERIES TRANSMITTER 1730 SERIES TRANSMITTER 02 Probe 2 Offset 01 Probe 1 Offset 0 0 mV 0 0 mV Setup Menu Setup Menu Each Novatech probe has an offset calibration value printed on a tag that is attached to the probe when it is dispatched The offset value must be entered into this setup function to achieve the most accurate measurements The value is usually between 1 0 to 1 0mV RANGE 6 0 to 6 0mV 0 0mV is set after a COLD START NOTE An error of 1mV in the probe offset will change the oxygen reading by about 1 oxygen when the probe is in ambient air However the reading is changed by much less when the probe is in a process Ata process gas oxygen concentration of 2 the
22. ime Activated on 1730 SERIES TRANSMITTER Probe 2 TC Open Ct Time Activated Time Accepted Time Cleared 08 Mar 2006 03 45 29 Status Active Time of the event Alarm Status Active Accepted Self Cleared 3 Press the ALARM ACCEPT key to accept the alarm 4 Press the OPTION up key to see the next active alarm or the OPTION down to see the previous active alarm 5 When all the new alarms have been ACCEPTED the ALARM light will stop flashing 6 Accept each alarm and then press the SETUP RUN key to return to the run mode April 2014 Etech Operators Manual 1738 Dew Point Transmitter arai 17 6 1 1 Current Alarms To view the alarms that are still current press the ALARM up key from the RUN mode and then use the ALARM up and down keys to view all alarms Use the DISPLAY up and down keys to view the Time Activated Time Accepted and the Time Cleared of each alarm 6 1 2 Alarm Log The alarm log keeps a record of the alarm events after the cause of the alarm has been cleared It will hold a record of up to 1000 alarm events and will be retained even with the transmitter power off To view all the alarms that have occurred in the alarm log press the ALARM down key from the RUN mode The display will look like this Alarm Description Time title Time Activated Gomes 1730 SERIES TRANSMITTER Probe 2 TC Open Ct Time Activated Time Accepted Time Cleared 08 Mar 2006 03 45 29 Alarm Log 0002
23. l Rating Operating Temperature 25 C to 55 C Relative Humidity 5 to 95 non condensing Altitude 2000m maximum Degree of Protection IP65 IP54 with internal reference air pump Case Size 315mm 12 4 wide 190mm 7 5 high 110mm 4 3 deep Case Weight 3 Kg 6 6 lbs 1738 Dew Point Transmitter RE 7 3 2 Operational Specifications Range of Analog outputs Field selectable from the following Function Min Range Max Range Probe 1 or 2 Dew Point 20 60 C to 40 C Average Dew Point 20 60 C to 40 C Probe 1 or 2 Linear Oxygen 1 0 to 100 Average Oxygen 1 0 to 100 Probe 1 or 2 Reducing Oxygen 2 decades 1x10 to 100 Average Reducing Oxygen 2 decades 1x10 to 100 Probe 1 or 2 Pre Reactive Oxygen 1 0 to 10 Average Pre Reactive Oxygen 1 0 to 10 Probe 1 or 2 EMF 100mV 0 to 1300mV Aux TC Temperature 100 C 0 to 1400 C No Output Output 1 transmits process variables for Probe 1 Output 2 transmits process variables for Probe 2 if enabled otherwise Probe 1 Output ranges for averaged process variables are only available when transmitter is configured with two probes are enabled Local display top line Selectable from the following Range Probe 1 Dew Point 60 C to 100 C Probe 1 Pre Reactive Oxygen 0 to 10 0 Probe 1 Oxygen 1x10 to 100 Local display secondary functions Range Probe 1 Dew Point Probe 2 Dew Point Se 60 C to 100 C Average Dew Point aa emp Up to 1760 C 3200 F Probe
24. mplified set up menu alarm logging faster probe heater control and more calculated values such as burner efficiency The 1738 Dew Point Transmitter has a variety of user selectable functions They are simple to use because each selection is menu driven For options you are not sure about read the manual on that particular item in chapter 5 SETUP mode Features include Inputs Two zirconia oxygen probe heated or unheated Oxygen range from 1 x 10 to 100 Furnace kiln or flue thermocouple field selectable as type K J RorS Main flame established safety interlock for heated probes only Purge flow switch Outputs Two linearised 4 20mA or 0 20mA DC isolated outputs max load 10000 12 bit resolution The output function and the range are field selectable Common alarm relay programmable Three other alarm relays with selectable functions Computer RS 232 C or RS 485 for connection of a computer terminal or printer for diagnostics of the transmitter probe or combustion process This connection is suitable for network connection to a computer DCS or PLC using MODBUS protocol Display Multi font graphical display Large characters for the oxygen on the top line Multiple lower line items for the secondary functions ie Probe temperature Oxygen for the second probe Alarm display mode that shows the time the alarm occurred and the acceptance time Alarm log mode that keeps the time the alarm occurred the acceptance time a
25. nd the time the alarm was cleared for the last 4 000 alarms Power Universal mains supply voltage 100 to 240VAC Automatically detects the mains voltage and frequency and set the power control accordingly April 2014 NWE tech Operators Manual 1738 Dew Point Transmitter AA 5 This page has been intentionally left blank Operators Manual NE Bbtech April 2014 6 DEENEN 1738 Dew Point Transmitter 3 SPECIFICATIONS 3 1 Hardware Specifications Number of oxygen probes 1lor2 Oxygen range 1x 10 to 100 Dew Point range 60 C to 40 C Pre Reactive Oxygen range 0 to 10 Oxygen accuracy 1 of actual measured oxygen value with a repeatability of 0 5 of the measured value Thermocouple types Type K J Rand S Temperature accuracy 2 C Analog outputs 0 20mA or 4 20mA field selectable see section 3 2 Active outputs WARNING DO NOT LOOP POWER OUTPUTS Use only passive receivers for commissioning and testing The use of loop powered receivers will damage the output Analog output load 1000 ohm max Alarm relays 4 Alarm relay contacts 2Amp 240VAC 2A 30VDC WARNING Do not use both mains voltage and low voltage connections to adjacent alarm contacts Mains voltage supply 100 to 240VAC 6 10 50 60 Hz Overvoltage Category Il IEC60364 4 443 Power 5 Watts for controller plus probe power 530W max 25 duty cycle each probe on 240VAC 110W max 100 duty cycle each probe on 110VAC 2 5A max Environmenta
26. on the top line in large text and on the second line a series of secondary variables in smaller text The default display is shown below with probe 1 dew point on the top line and the probe 1 temperature on the lower line Heartbeat Indicator Power Indicator e POWER Primary process variable EEN indicator process variable Lowerline secondary alert PRN process variable dk ee DP Dew Point B 14 20 36 PO Pre Reactive Oxygen O Oxygen Activity Information Indicators B Burner input enabled terminals 11412 Transmitter is performing an automatic calibration 1730 SERIES TRANSMITTER operating temperature 650 C 1200 F Transmitter is performing a probe impedance check A T flashing one or more oxygen probes is below Z In addition to displaying various input and process variables the display is also to used show the current and active alarm conditions and to configure the transmitter This is achieved by entering the SETUP mode see chapter 5 The backlight will switch off automatically if the case temperature is over 35 C It will switch on again as soon as a key is pressed and remain on for 60 seconds April 2014 CNW tech Operators Manual 1738 Dew Point Transmitter SE 9 4 2 Top Line Display The top line of the display shows the primary process variable in large text The primary process variable is selected using the Configuration Menu as described in the Technical Manual Primary process v
27. play keys are used to scroll the lower line up and down through the variety of measurements that are available on the lower line display The list can be changed to suit the operator by using SETUP function 4 ALARM UP Key If there is either a new alarm or an active alarm the ALARM UP key can be pressed to examine the alarm status The alarm light will be flashing if there is a new alarm or steady if there is an existing alarm see chapter 6 Alarms ALARM DOWN Key When the transmitter is in the run mode or the alarm mode the ALARM UP key has been pressed the ALARM DOWN key and the ALARM UP key allow the operator to examine the alarm log The date time of last 4000 alarms can be scrolled through Each alarm record consists of the alarm name and the date time that the alarm was initiated accepted and cleared see chapter 6 Alarms ALARM ACCEPT Key The ALARM ACCEPT key is used to accept a new alarm see chapter 6 Alarms GAS 1 PURGE 1 and GAS 2 PURGE 2 Keys These two keys are used to turn on the gas purge solenoids When the transmitter is in the manual cal purge mode Commissioning function 20 the solenoid will be activated for as long as the key is pressed When the transmitter is in the auto cal purge mode the automatic cal purge cycle is started The cycle can be stopped by pressing any key See chapter 7 Gas Calibrate and Purge Operators Manual Etech April 2014 10 FRI 1738 Dew Point Transmitter 4 3 2 Keypad
28. s page has been intentionally left blank Operators Manual TA tech April 2014 12 geg 1738 Dew Point Transmitter B SETUP MODE This chapter describes the functions available when the SETUP mode is selected on the transmitter The SETUP mode is accessed by pressing the SETUP key The transmitter will return to the RUN mode when the SETUP key is pressed again or 1 minute after the last key is pressed 5 1 Setup Mode Function Summary When the transmitter is in the SETUP mode the SETUP light will be on The following table shows the SETUP menu functions Menu Function name top line Range Default value 01 Probe 1 offset 6 0 to 6 0mV 0 0mV 02 Probe 2 offset 6 0 to 6 0mV 0 0mV 03 Lower line items See SETUP function 3 for details chapter 5 2 2 04 Oxygen display units Oxygen Oxygen ppm Oxygen 05 Damping factor No damping to 5 samples averaged 10 samples averaged 06 Process alarms Enabled Disabled Disabled 5 2 Setup Mode Details Power indicator Function Name gt LI POWER 1730 SERIES TRANSMITTEP 01 probe 1 Offset Selected Option 0 0 mV Activity Indicator A Autocal active Verification that the selected option has been saved Menu name O Setup Menu Z Probe impedance check active 5 2 0 To Change an Option in the Setup Menu 1 Select the SETUP mode by pressing the SETUP RUN key once The SETUP light will come on and the display will have the format shown above The operations o
29. solator circuit has been found to fall outside the normal calibration specifications This check is only performed when the AUTO CAL button is pressed Refer to chapter 4 2 2 12 BBRAM Fail All of the setup options are held in the battery backed memory BBRAM This is the battery shaped device at the bottom centre of the 1730 1 PCB labeled MEM1 This alarm will occur when this device fails and will need to be replaced 13 Heater 1 SSR Failure 14 Heater 2 SSR Failure 15 Heater SSR Leakage The 1738 has the ability to monitor the operation of the heater current As a result the transmitter will give an alarm within 1 second of a heater power control switch Solid State Relay failure If either of the SSR s are found to be faulty both heaters will be turned off immediately and the alarm will be raised The SSR must be replaced The SSR Leakage alarm will occur if one of the heater SSR s are partly shorted If probe 1 SSR has failed and only one probe is being used the 1738 Technical Manual describes how the SSR for probe 2 can be selected instead If 2 probes are being used but neither of the solenoid outputs are being used consult the Technical Manual 16 Probe 1 Filter Blocked 17 Probe 2 Filter Blocked Blocked probe filter This test is only performed when automatic purging of the probe is selected Refer to the Technical Manual for further details This alarm will not reset until
30. the next purge cycle that can be initiated manually or automatically or the power to the transmitter is turned off and back on 18 Gas 1 Calibration Error 19 Gas 2 Calibration Error This alarm will only be raised if the oxygen measurement during an automatic gas calibration check falls outside the set gas limits This alarm will not reset until the next purge cycle that can be initiated manually or automatically or the power to the transmitter is turned off and back on April 2014 NWE tech Operators Manual 1738 Dew Point Transmitter BEES 19 6 4 Selectable Process Alarms There are three user configurable alarm relays Any or all of the following functions can be selected for each relay Refer to the 1738 Technical Manual for details on setting alarm thresholds and alarm delay times NOTE The process alarms will only be activated if they are enabled in SETUP menu function 06 20 Oxygen 1 High 21 Oxygen 2 High The measured oxygen level on the indicated probe has exceeded the alarm threshold level set in the Calibration Menu for a period of time exceeding the delay time for the particular alarm 22 Oxygen Deviation The difference between the oxygen level measured on probe 1 and the oxygen level measured on probe 2 is greater than the alarm threshold level set in the Calibration Menu 23 Dew Point 1 High 24 Dew Point 2 High The measured dew point on the indicated probe has exceeded the
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