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INSTRUCTION MANUAL 770PC PROCESS CONTROLLER

1. id TS 5 134 1010 2 IN 51 77 25 147 8 1075 77 LEADS 50 FT 15 2M 1050 77 28 IN 7 1 DIA NOM NN REF SENSOR WIRING CONNECTOR WIRE 10 770PC PIN WIRE COLOR NUMBER TERMINAL STRIP 1 BROWN 8 vec 2 RED 7 VAN 7 BLACK 5 DA 5 GREEN 5 CLK 3 ORANGE DRAIN 4 AG 8 WHITE 3 56 3 4 YELLOW 2 56 2 5 BLUE 1 55 1 770 REAR PANEL 3 Qyjgwc reser 2 RESET Q w w 9 LAN H L LAN NETWORK Q S LANE 4 SENSOR OGak OUTPUT ANALOG OUT 1 AC GND j NOTE 3 D seB 3 OUTPUT ANALOG OUT 2 Q9 908 2 acno2 10 GND NOTE 3 L Qinscg 1 NC 7 lawe 0 NO QUE 2 Qin w u COM Nu Qi 5 DA gt 19 NC 7 RELAY 2 SENSOR Bicak 9 NO NOTE 2 A Qa ac 9 10 COM 21 5 5 1 L 7 2057 N NOTE 1 L onm o S 2 NOTES 1 AC INPUT FACTORY SET 120VAC 50 80Hz OR 220VAC 50 60Hz 2 RELAY CONTACTS MAX POWER SA RESISTIVE LOAD AT 250VAC 3 RECOMMENDED WIRE SIZE 22 24AWG 91 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 13 REAR PANEL 24 VOLT UNITS 770PC REAR PANEL 27 VOC RESET VAN UN DA LAN CLK2 AG AGNDI SIGB 3 AOUT2 5168 2 AGND2 5168 1 NO1 VAN NC2 Cu N02 AG 02 SIGA 3 241
2. Omar Doo doo ore QE OUUUODOOOUO LJ LT LI LI MEASUREMENT CIRCUIT BOARD Coen nuonmmunn OP UUUHUUUUUUHuuguu c q g o g E 6 PROGRAM IC L2 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 10 SWITCH FOR SETTING LAN ADDRESS 89 U19 BLINKING ORIENTATION LED NOTE IC CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 11 770PC ANALOQ OUTPUT CONVERSION ee 2 7 nan d H Zn g 4115
3. 5 14 Smart Automatic Transmitter Calibration 5 14 1 Resistance Temperature Calibrator _________________ 5 14 2 Voltage Calibrator _____________________________________ 5 14 3 Calibration Procedure 5 15 Using the Function Key 6 NETWORKING aaa Lan Capabilities and Applications ES Lan Features 6 3 Lan Guidelines 6 4 Remote Control Mode 6 5 Changing Transmitters Address For Instruments With Software Earlier Than Version 2 0 6 6 Setting the Network Address For Instruments With Version 2 0 Software Or Later CHAPTER 7 SE Ee aa s kusa ss ss sss asnaspa Fuse Replacement o 2 uuu 5 770PC Software Upgrade Microprocessor Replacement _______ 73 Recommended Spare Parts List dod GAGOOSSOL OS uc lop uu er ce Susana 7 5 Optional Output Printed Circuit Boards 7 6 Rear Cover __________ __ _ _ _ _ 7 7 Troubleshooting TABLE OF CONTENTS C
4. d bid h C d Bild B B d Bid B C AW E d BE d Bild d c5 l P B n q H O Trertr C E H qn 2 d Bild HB d ann q 0 m q B t B E q H 6 H uM AUT 1 d B Bi IB 4 E g pu qd B us q lt d b fe d n hl bh d Tm q 11 aan q oy g H H H C r B g B ver B 9 Bid ig ai nip TEM d bid p d mid bid IB lt 1 O d ipia n ni dif ed d in di nin clc C2 gt LT T T BLINKING LED NOTES 1 AQUT1 AND AOUT2 ARE SHOWN IN THE 4 20 POSITION TO CHANGE RANGE TO 0 10VDC MOVE BOTH JUMPERS DOWN TO THE 0 10 0 POSITION 90 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 12 CORD WIRING SENSOR PATCH CORD
5. 5 Press 5 to select differential pressure 4 Volt 6 Bars 5 Diff 9 More 3 6 2 Tank Level Tank level is measured with a pressure sensor mounted in the tank A Smart Sen sor will automatically identify the sensor Non Smart Sensors are identified by the maximum pounds per square inch psi rat ing each sensor is calibrated for Tank size must be programmed into the software in the calibration menu by entering tank height and area Tank Percent Full or amount of Gallons or liters may be measured by the 770PC By entering the menus and programming this information these tank level measure ments may be obtained CHAPTER 3 SENSOR TYPES CALIBRATION 3 6 3 Percent Full Gallons Liters 1 Press menu press 0 for measurement mode Main Enter menu no Or NEXT for list 2 Press 1 for channel A or 2 for channel B either channel may be used for a tank level measurement For the purpose of this manual press 1 Measurement Mode 1 Ch A 2 Ch B 3 Press 1 Ch A Measurement 1 Prime 2 Second 4 Press 1 for Full or 2 for actual Gallons measurement Press 9 to view more selections 1 Full 3 PSi 2 Gals 9 More Press 4 for cubic meters or 5 for liters 5 Liters 9 More 4 m 3 6 Ft 5 Once the measurement selection is made press lt three times until reaching the Main menu Press 2 for the calibrate menu Main Enter menu no Or NEXT for list 26 6 Now that Ch A is p
6. 9 1 2 Three line Alphanumeric Vacuum Fluorescent Display Part Number Outputs 772 201 NONE 772 202 772 204 772 209 772 211 2 4 20 mA 772 212 2 4 20 772 214 2 4 20 mA 772 219 2 4 20 mA 9 1 3 Gateway Part Number Output 774 231 RS 232 774 232 RS 232 See also manual supplement 84350 Voltage 90 130VAC 200 260VAC 24VDC 24VDC 90 130VAC 200 260VAC 24VDC 24VDC Voltage 90 130VAC 200 260VAC CHAPTER 9 MODEL NUMBERS 9 2 PATCH CORDS 9 2 1 Sensor Patch Cords with 8 Pin Female to Tinned Leads Part Number Cable Length 1000 53 6 15 2cm 1005 77 5 1 5m 1010 77 10 3m 1025 77 25 7 6m 1050 77 50 15 2m 1100 77 100 30 5m 1115 77 150 45 6m 1120 77 200 61m 1130 77 300 91m 9 2 2 T NET Local Area Network LAN with 4 Pin Female AMP to Tinned Leads Part Number Cable Length 1005 78 5 1 5m 1010 78 10 3m 1025 78 25 7 6m 1050 78 50 15 2m 1100 78 100 30 4m 9 2 3 T NET Local Area Network LAN Accessories Part Number Description Additional Information 1000 55 Network Terminators 4Pin AMP Set of Two 1000 54 LAN Y Cables 4 Pin male AMP to 4 Pin female AMP to tinned leads 78 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 0 TECHNICAL ILLUSTRATIONS The following illustrations are added to improve the user s understanding of this manu al 10 1 770PC Overall Dimensions 10 2 770PC Exploded Asse
7. Measurement Mode menu 43 Default Settings Conductivity Primary Signal Resistivity Secondary Signal Degree C pH Primary Signal pH Secondary Signal Degree C Flow Primary Signal GPM Secondary Signal Total Gallons Pressure Primary Signal PSI Secondary Signal KPas Tank Level Primary Signal Full Secondary Signal Total Gallons Temperature Primary Signal Degrees C Secondary Signal Degrees F Chemical cell Primary Signal Resistivity Secondary Signal Degree C Voltage Primary Signal Voltage Secondary Signal Voltage Flow Primary Signal GPM Secondary Signal Total Gallons CHAPTER 5 TRANSMITTER OPERATIONS To change a measurement type 1 Press menu then press 0 for the mea surement menu Main Enter menu no Or NEXT for list 2 Select channel Measurement Mode 1 Ch A 2 Ch B 3 Select either Primary or Secondary Ch Measurement 1 Prime 2 Second The menu will display a list of measure ment types that are available based upon the sensor type installed on the selected channel 4 Select a measurement from the menu options below Conductivity 1 Res 2 Con 3 TDS 9 More Press 9 for other measurement options 4 DegC 5 DegF 6 Rej 9 Other pH 1 pH 2 Volts 3 DegC F DegF 44 Temperature 1 Degrees C 2 Degrees F Flow 1 GPM 3 m 3 2 Gals 9 More Press 9 for other measurement options 4 cu M hr 6 Re
8. 7 ddddduuu 39 ddudduuu 71 duddduuu 103 duudduuu 8 dddduddd 40 ddududdd 72 dudduddd 104 duududdd 9 dddduddu 41 ddududdu 13 dudduddu 105 duududdu 10 ddddudud 42 ddududud 74 duddudud 106 duududud 11 dddduduu 43 ddududuu 75 dudduduu 107 duududuu 12 dddduudd 44 dduduudd 76 dudduudd 108 duuduudd 13 dddduudu 45 dduduudu 77 dudduudu 109 duuduudu 14 dddduuud 46 dduduuud 78 dudduuud 110 duuduuud 15 dddduuuu 47 dduduuuu 79 dudduuuu 111 duuduuuu 16 dddudddd 48 dduudddd 80 dududddd 12 duuudddd 17 dddudddu 49 dduudddu 81 dududddu 13 duuudddu 18 ddduddud 50 dduuddud 82 dududdud 14 duuuddud 19 dddudduu 51 dduudduu 83 dududduu 15 duuudduu 20 dddududd 52 dduududd 84 dudududd 16 duuududd 21 dddududu 53 dduududu 85 dudududu 17 duuududu 22 ddduduud 54 dduuduud 86 dududuud 18 duuuduud 23 ddduduuu 55 dduuduuu 87 dududuuu 119 duuuduuu 24 ddduuddd 56 dduuuddd 88 duduuddd 120 duuuuddd 25 ddduuddu 57 dduuuddu 89 duduuddu 121 duuuuddu 26 ddduudud 58 dduuudud 90 duduudud 122 duuuudud 27 ddduuduu 59 dduuuduu 91 duduuduu 123 duuuuduu 28 ddduuudd 60 dduuuudd 92 duduuudd 124 duuuuudd 29 ddduuudu 61 dduuuudu 93 duduuudu 125 duuuuudu 30 ddduuuud 62 dduuuuud 94 duduuuud 126 duuuuuud 31 ddduuuuu 63 dduuuuuu 95 duduuuuu uu 127 duuuuu Example Setting the LAN address at 22 LLL LTE 12 34 5578 68 CHAPTER 7 SERVICE 770 Transmitters do not require regular service or maintenance However to pre vent voiding the warranty all repairs must be returned to the factory or
9. 71 44 y 87 4 15 DA 0 43 IN X 1 70 IN 10 9MM X 43 2MM 4 OVAL SLOTS 075 N 19MM 150 IN GR 84 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 6 PIPE WALL MOUNTING 85 CHAPTER 10 TECHNICAL ILLUSTRATIONS PIPE WALL MOUNTING 10 7 86 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 8 NEMA 4X REAR COVER DIMENSIONS 46 4 _ 19 PLUGS SUPPLIED BY THORNTON ASSOC 87 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 9 4X REAR COVER EXPLODED ASSEMBLY 5 32 X 3 4 SCREW REAR PLATE W CASKET 6 32 X 3 8 SCREW 88 O noon esas rn VEU LAE L5 Os UW EFELETT Oooo L2 OOP Mofo L3 LTLTU CT ETUL UG UI Hom LI LI LI nnnnnnnn lip DOUDUHUUU OUT
10. Channel A primary The channel and units for this measurement are not shown The second line shows the Channel A Primary mea surement indicated by the first character A of 18 18 Mohm cm This measure ment is compensated for temperature as indicated by the character C at the end of the line The third line shows the Channel B Primary measurement indicated by the character B of 59 2 PSI pressure Press next to toggle the display to show the alternate measurements For example if line 2 shows the Channel A Primary mea surement pressing next will show the Channel A Secondary measurement CHAPTER 1 GETTING STARTED 25 00 a 25 00 Deg C b 408 3 kPas Line 1 and 2 display Channel a Sec ondary Measurement for resistivity tem perature in degrees Celsius Line 3 dis plays Channel lt Secondary Measure ment for pressure in kilo Pascals metric Measurement Types 770 Series Instruments are capable of measuring Primary and Secondary para meters on each of two channels designat ed and The user can specify through menus which parameters are primary and which are secondary In addition dis played results can be computed from a combination of measurements made on both channels see section 5 01 Measurements depend on the type of sen sor connected The following is a list of options Conductivity Sensor Conductivity in mS cm uS cm nS cm Resistivity o
11. Measurement 23 Calibration EDS 23 3 5 2 pH Sensor Diagnostics 23 3 5 3 pH Measurements Advanced Features 24 3 5 4 Setting UP and ST C Eactors for pH 24 3 6 Pressure Measurements 25 3 6 1 Differential E 25 3 6 2 Tank Level 023002 25 3 6 3 Percent Full Ga allons LitetS 26 3 7 Flow Measurements 27 3 7 1 Percent Recovery Reverse Osmosis_ 28 3 7 2 Totalized PLOW acted 29 das HOW Rates lt 29 3 7 4 Flow Velocity 30 338 Sensor GalibratiOHl ssssd mi cm2 mnensc2mi8 222m2522 31 3 8 1 One Point Calibration 31 3 8 2 Two Point Calibration 32 3 9 Changing Sensor Calibration 1 32 3 10 Entering the Inside 33 3 11 Saving Calibration Data 2 sme 34 3 12 Optional 24VDC Sensor Power Supply 35 3 12 1 In
12. TECHNICAL SPECIFICATIONS 770PC Power Line voltage 24VDC 5 AMPS 90 130 VAC 47 63 Hz 200 260 VAC 47 63 Hz 15 watts maximum Physical Dimensions 4 6 x 4 9 6 6 117mm x 124mm x 168mm Panel cutout size 3 625 x 3 625 92mm x 92mm 1 4 DIN Environmental Storage temperature 40 F 40 C to 158 F 70 C Operating temperature 32 F 0 C to 122 F 50 C Humidity 0 to 95 RH non condensating Ranges Resistivity 100 cm to 20 cm temperature compensated aqueous samples to 90 cm uncompensated higher with non aqueous samples Conductivity 0 050 uS cm to 0 2mS cm 1 Constant Cell 10 uS cm to 100mS cm 10 Constant Cell 50 uS cm to 1000mS cm 50 Constant Cell Conductance down to 0 02uS TDS 0 62 5k ppm as NaCl Temperature 40 F 40QC to 284 F 1400 pH 0 14 Flow 1 2 6 PVC or PVDF pipe Pressure 0 1000 PSI Vacuum 0 15 PSIA Tank Level 0 to 30 feet of head Performance For resistance 4Kohm cm to 40 Mohm cm uncompensated resistivity with a 0 1 cell constant Accuracy 0 3 of reading up to 10 Mohm cm 10 496 of reading above 10 Mohm cm Repeatability 0 2 of reading up to 10 Mohm cm 10 396 of reading above 10 Mohm cm Relays 2 relays each rated for maximum of 5 amp resistive load at 30 VDC or 250 VAC 1 10 HP at 125 250 VAC For CE rated models 772 209 and 772219 see manual 84350 75 CHAPTER 8 TECHNICAL SPECIFICATIONS Display 3 line vacuum f
13. combination of setpoints For example relay 1 can be programmed to be activat ed when a limit is exceeded on setpoints 51 1 2 3 or 4 The relay will not be deactivated until error conditions for all assigned setpoints are resolved 2 Relay State The relay is set to the Normally Open Normally Closed posi tions when programmed in the normal relay state i e the relay functions as indi cated by the label markings on the real panel Selecting the inverted state will cause the relay to operate in the opposite condition as indicated by the rear panel label In this mode the normally open and normally closed positions are swapped NOTE NC NC in normal state NC NO in inverted state WARNING THE INVERTED STATE WILL REVERT TO NOR MAL STATE WHEN A POWER LOSS OCCURS 3 Delay Time is the length of time that the setpoint error condition must exist before activating the relay If the setpoint error condition disappears before the delay is over the relay will not be activated 4 Hysteresis Value is entered as a per centage of the setpoint value that must be exceeded before the relay is deactivated Default settings 1 Relay is disabled 2 No setpoints are assigned 3 Delay is 0 seconds CHAPTER 5 TRANSMITTER OPERATIONS 4 Hysteresis is 0 5 Relay state is normal To modify these settings 1 Press menu then press 6 for the con trol menu Main Enter menu n
14. from the calibration menu The buffer solu tion and the electrode should be at the same temperature See section 3 08 NOTE e Stirring the solutions ensures a quicker response Do not rub the glass electrode membrane when dry since it will create electrostatic charges on the glass membrane which causes a delayed response 3 5 2 pH Sensor Diagnostics The Additive Factor standardize offset is an indicator of how far the sensor has drift ed from the nominal zero starting point in pH units It is recalculated after every cali bration Drift in this value is usually due to aging or contamination of the reference electrode portion of the sensor An offset of more than 2 5 pH units is an indication that the sensor should be replaced soon The Additive Factor A can be viewed at any time in the Edit Calibrate menu However the value must not be changed in this menu or the sensor will have to be recalibrated The Multiplier slope or span is an indica CHAPTER 3 SENSOR TYPES CALIBRATION tion of the sensitivity of the sensor to changes in pH It has a nominal value near 1 and is recalculated after every 2 point calibration Reduction in this value is usu ally due to aging coating or hot caustic attack of the glass measuring membrane of the sensor A sensor with Multiplier value less than 0 80 should be replaced soon The Multi plier M can be viewed at any time in the Edit Calibrate menu The va
15. press lt twice to return to enable menu 1 Enable 3 Setup Relay 2 Disab NOTE Relays must be enabled to activate relay programs CHAPTER 5 TRANSMITTER OPERATIONS Press 1 to enable relay programs after pro gramming 5 9 SYSTEM RESET A system reset sets all parameters of the 770PC to the default condition Various self tests and other initialization proce dures will also be performed 1 Press menu then press 9 for the other menu Other Menus 1 Reset 2 Test Press 1 to select next menu 2 Press 2 1 Measure Reset 2 Reset System 3 Press 1 to reset the system or press 2 to quit without doing a reset 1 System Reset 2 Return 5 9 1 Measurement Reset A measurement reset will reset the total flow and tank level measurements to zero This function has no effect on all other measurements 1 Press menu then press 9 for the reset menu 53 Main Enter menu no Or NEXT for list 2 Press 1 Other Menus 1 Reset 2 Test 3 Press1 1 Measure Reset 2 System Reset 4 Press 1 to reset measurements or press 2 to quit without doing a reset 1 Measure Reset 2 Return 5 Press exit menu to leave menus 5 10 MEASUREMENT AVERAGING Measurement Averaging is used to stabi lize measurements in applications with rapidly changing parameters or noise Dif ferent levels of averaging are available for various applications In general a higher level of averaging will lead to a longer res
16. purity effects as well as conventional neu tral salt impurities and conforms to ASTM standards D1125 and D5391 Linear Compensation The raw resistance measurement is com pensated by multiplication with a factor expressed as a per C deviation from 25 C The range is 0 99 C with a default value of 2 C Cation Ammonia ETA Compensation Power industry applications for specific conductivity using ammonia or ETA ethanolamine water treatment and cation conductivity measurements with acidic samples are appropriately compensated with this setting It takes into account the effects of temperature on the dissociation of pure water with the presence of these bases and acids 47 Glycol Compensation This compensation matches the character istics of cooling antifreeze solutions used in various processes is 100 ethylene glycol Gly50 is 50 ethylene glycol in deionized water Alcohol Compensation IPA This compensation provides for the tem perature characteristic of a 75 solution of isopropyl alcohol in pure water used for some rinsing operations in semiconductor manufacture Compensated measure ments using this solution may go well above 18 Mohm cm Light 84 Compensation This compensation matches the earlier high purity water research results of Dr T S Light published in 1984 it is provided only for use by institutions that have stan dardized on that work For all other pur
17. Bp channel B primary Bs channel B secondary assigned a specific measurement parame ter from a list that is applicable to the installed sensor Current measurement parameters available Conductivity pH Resistivity pH Conductivity Voltage TDS Degrees C Degrees C Degrees F Degrees F Rejection 20 Pressure PSI kpascals mm Hg Differential Pressure Voltage ORP millivolts Tank Level 96 Full total gallons Liters PSI Chemical Resistivity Conductivity Degrees C Degrees F 96 NaOH HoSO4 Voltage PSI kpascals mm Hg Differential Pressure Voltage Flow Gal min m3 hr total flow Recovery Differential Flow Liters Gallons Liters min Feet second Temperature Degrees C Degrees F Frequency Gal min m3 hr total flow Recovery Hz CHAPTER 3 SENSOR 5 CALIBRATION 3 3 COMPENSATION Measurements such as resistivity conduc tivity and pH can be compensated for tem perature For example the resistivity of pure water at 25 degrees C is 18 18 Megohm cm Yet the resistivity of ultra pure water at 30 degrees C is 14 08 Megohm cm By compensating the resis tivity reading the value of pure water will always read 18 18 Megohm cm Compen sating a measurement is selected in the menu and is indicated on the display with the letters C for a compensated mea surement or U for uncompensated mea surement shown after the measurement units The s
18. a measurement to adjust a range on Set Range 1 Ap 2 As 3 Bp 4 Bs 3 Select a range Resistivity 46 TDS 1 Auto 2 K ppm 3 ppm 4 m ppm Pressure 1 Auto 2 PSI 3 KPSI 4 MPSI Other measurements No range for this mode press NEXT 4 Press to back up to the previous menu or press exit menu to exit the menus Repeat this process until the range has been set for each of the 4 mea surements 5 5 COMPENSATING MEASURE MENTS Resistivity TDS and conductivity measure ments can be compensated With temper ature compensation the resistivity reading is referenced to 25 C As an example with standard compensation the resistivity of ultrapure water will read 18 18 Mo cm regardless of the temperature reading A number of different compensation meth ods are available None Standard NaCl Cation Ethylene Glycol 100 Isopropyl Alcohol 75 Linear per Degree C Light 84 Ethylene Glycol 50 H5O Gre IS CHAPTER 5 TRANSMITTER OPERATIONS A measurement that is compensated will be indicated by the letter C after the read ing The letter U will be displayed if the measurement is not compensated except on line 1 For Pharmaceutical USP 23 conductivity measurements where uncompensated measurement is required select none for compensation Standard Compensation The standard compensation method includes compensation for non linear high
19. accurate measurement from the sensor s output signal Equations vary by sensor type as an example the output of a resistivity sensor can be repre sented by an equation describing a straight line Rzx al a2 Where R resistivity value al 2multiplier factor x output from cell a2 adder factor An example for a 0 1 constant resistivity sensor the multiplier factor a1 is 0 1 and the adder factor a2 is O If the sensor out put is 120 000 ohms then the actual resis tivity of the solution measured is 1 2 Mohm cm and is computed as follows 1 2 120 000 0 1 0 R 1 2 000 000 R 1 2 Mohm cm NOTE For many sensors such as resistivity the adder factor may be zero The calibration constants can be modified CHAPTER 3 SENSOR TYPES CALIBRATION from the menus 3 2 MEASUREMENT TYPES AND PROCESS The 770PC has two channel inputs for installing sensors Up to four measure ments can be continuously processed at One second intervals two measurements from each sensor Channel display Each channel A and B has a primary measure ment indicated by A and B and a sec ondary measurement indicated by a and b in the display mode When programming the software in the menu mode the primary measurements are indicated as Ap and Bp secondary measurements as As and Bs Each of the four measurements can be Menu Explanation Mode Ap channel A primary As channel A secondary
20. repaired by an authorized technical service person CAUTION THIS UNIT AND ASSOCIATED ELECTRONIC PARTS ARE STATIC SENSITIVE ALL WORK MUST BE DONE AT AN APPROVED STATIC FREE WORK STATION WARNING DISCONNECT POWER BEFORE OPENING THE CASE 7 1 FUSE REPLACEMENT Each 770PC is protected from accidental voltage overloading short circuits and related damage by a 1 4 amp fuse 3 4 amp fuse for the 24VDC unit located on the backplane printed circuit board PCB If this fuse requires replacement do the following 1 Disconnect all power to the 770PC unit before proceeding 2 Remove the front snap on bezel to expose the four screws retaining the lens plate Remove the four retaining screws and carefully lift the lens plate away from the unit CAUTION THE LENS PLATE IS CONNECTED TO THE DISPLAY PCB BY A RIBBON CABLE WHICH MUST BE CAREFULLY DISCONNECTED 69 3 Remove the four screws which retain the display PCB to the enclosure Careful ly remove the display PCB from the unit Caution The display PCB is connected to the measurement PCB by a wire assembly and a connector which must be carefully disconnected 4 Carefully remove printed circuit boards and place in a static free location 5 If a NEMA 4X Rear Cover is installed on the 770PC unit this must be removed prior to removing the Backplane PCB 6 CAUTION Be certain all power to the 770PC unit is disconnected before pro ceeding 7 Remove the six
21. through a Reserve Osmosis membrane This is done to help balance the flow of liquid through the membrane Flow sensors are installed in the product and reject side of the mem brane The 770PC transmitter will perform the calculations required to indicate per cent recovery Two flow sensors must be connected to a 770PC transmitter to achieve a percent recovery measurement The formula for obtaining Percent Recov ery is Product Product Reject X 100 The Product sensor must be installed on the Channel measuring recovery See the schematic diagram below of an RO installation with sensors installed for Percent Recovery FLOW RO MEMBRANE SENSOR FEED PRODUCT FLOW SENSOR REJECT Channel A secondary measurement can be recovery 28 Important When preparing the system to perform a percent recovery measurement the prod uct monitoring sensor must be installed in the same channel that will measure per cent recovery If the product flow sensor is installed in channel A then percent recov must be measured in Channel Like wise if the product sensor is installed in channel B then the percent recovery mea surement must also be programmed in channel B The remaining channel may be programmed to display any of the display options available for a flow sensor i e flow rate or total flow To program the transmitter for percent recovery 1 Press menu then press 0 to access the measureme
22. 00 SIDE VIEW Patch Cord Color Code 1 Blue 3 White 5 Green 7 Pink 2 Yellow 4 6 Black 8 Brown 37 38 CHAPTER 4 OUTPUT OPTIONS 4 1 ANALOG OUTPUT SET UP The analog output can be set as either a voltage output 0 10 volts or a current out put 4 20 mA The selection is made by manually changing plug in jumpers on the Analog Output circuit board Thornton part number 07288 See analog output con version diagram in section 10 Analog Output Channel 1 use jumper block A out 1 4 20 mA output jumper J2 0 10 volts output jumper J3 Analog Output Channel 2 use jumper block A out 2 4 20 mA output jumper J4 0 10 volts output jumper j5 4 2 ANALOG OUTPUTS For 77 units that have the output option circuit board either of the two ana log output channels can be programmed with the following parameters 1 Assigned signal any of the four mea 39 surements Ap As Bp and Bs can be assigned to the output The signal output will be proportional to the value of the assigned signal 2 Minimum value the measurement reading that will correspond to an output of 4mA or 0 volts Whenever the measure ment is less than or equal to this number the analog output will be set to its minimum value 3 Maximum value the measurement reading that will correspond to an output of 20mA or 10 volts Whenever the mea surement is greater than or equal to
23. 07 EMAIL info thorntoninc com Smart Sensor is under license 84263 Rev H from Textronix Inc U S Patent 3 98 4 672 303 Printed in U S A
24. 0PC If a NEMA 4X rear cover is installed on the 770PC the power supply may be mounted on an inside wall for complete NEMA 4X protection CAUTION WHEN THE 24VDC POWER SUPPLY IS INSTALLED 36 CHAPTER 3 SENSOR TYPES CALIBRATION 770 REAR PANEL 72 SN PEs E 5601 9 Din w 0 9 wn 10 SENSOR i 9 21 sca 3 0 0 98 2 0 OO La x 0 HEI Hom c 49 12 5 SENSOR Zl w ME Os 1 1 Li x 1 t N oas Gel CY oe 8 L 9 4 9 we FIGURE 1 24VDC Powered HBESEH Sensor Connections Sree PEEP EA coe vey 8 WIRE TWISTED PAIR 1000 72 lo ollo S N 2 2 eoo 1 00 TOP VIEW FIGURE 2 1 29 9 5 24400 PWR SUPPLY 4 AG MOD NO 1000 72 ORC 3
25. 1 770PC Analog Output __________________________ 90 10 12 770PC Patch Cord Wiring 91 10 13 Rear Panel 24 Volt Units 92 10 14 LAN Cables and Terminations 93 10 15 Smart Sensor Calibrators 94 10 16 Menu Tree Main Menu ____________________________________ 95 10 17 Menu Tree Measure Menu ______ _ _ 96 10 18 Menu Tree Display Menu ___________________________________ 97 10 19 Menu Tree Calibrate Menu __ 98 10 20 Menu Tree Time Average 99 10 21 Menu Tree Compensation Temp Menu _____________________ 100 10 22 Menu Tree Range Menu 101 10 23 Menu Tree Control Menu 102 10 24 Menu Tree Communication Menu 103 10 25 Menu Tree Security Menu ________________________________ 104 10 26 Menu Tree Other __ 105 up a han MU 107 CHAPTER 1 GETTING STARTED Thank you for ordering the 770PC from Thornton The 770PC instrument is user friendly flexible and highly accurate It is an analytical and process control instru ment for measuring solution properties The 770PC is a two channel device whi
26. 4 k 5 M 2 u 3 m 4 k 5 M 1 5 1 5 Min XXXXXXX Y Min XXXXXXX Y Enter no Enter no 1 2 3 Assign Sp 1 Ap Sp 1 2 Hi XXXX units 2 As 3 Bp 4 Bs 3 Low 4 USP23 Enter Sp 4 3 2 1 1 Sp1 2 Sp2 R Delay XXX sec R is 1 Normal R Hyster XXX 3 Sp3 4 Sp4 Enter No 2 Inverted Enter No Sp Over range Active 1 Y 2 N 102 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 24 770 SOFTWARE MENU TREE COMMUNIC MENU 7 COMMUNIC MENU 1 Remote Control Set LAN address LAN Address XXX Remote Control Enter No gt 1 Disab 2 Enab Control Unit XXX Enter No gt enter to unit XXX Established Unit XXX is not Available 103 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 25 770PC SOFTWARE MENU TREE SECURITY MENUS 8 SECURITY MENU Menu 98 Lockout 1 Enab 2 Disab 3 Chang Enter Password Change Enter Old Pass to Lock Enter New Lockout is now Password Enabled Menu Password Press 5 if Ok 104 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 26 770PC SOFTWARE MENU TREE OTHER MENUS 9 OTHER MENUS 1 Reset 2 Test d 1 Measure Reset Set Analog 2 System reset 1 4 2 12 3 20 1 System Reset 2 Return Reset Complete Press Exit Menu Menu Password XXXXX Press 5 if Ok Measurements are Reset Press Exit 105 WARRANTY Thornton Associates warrants products it manufactures against defects in ma
27. 7 SETPOINTS Four setpoint limits or alarm conditions can be assigned to any of the four mea surements Ap As Bp Bs More than one setpoint can be assigned to the same measurement A setpoint can be defined as a high limit a low limit or a USP 23 limit See Section 5 7 1 for detail on the USP 23 setpoint A setpoint alarm condition occurs when the measurement is greater than the high or USP 23 limit or less than the low limit This condition is indicated by a flash ing measurement reading Also the mea surement being displayed will be preceded by the character gt for a high limit error or lt error for a low limit Default setting setpoints are disabled To enable or modify a setpoint 1 Press menu then press 6 for the con trol menu Main Enter menu no Or NEXT for list 2 Press 1 1 Setpnt 2 Relay 3 Analog Output CHAPTER 5 TRANSMITTER OPERATIONS 3 Enter the setpoint number Which Setpoint Enter No 1 4 _ 4 Select parameter SP 1 Sig 2 Type 3 Value 4 Other If Sig is selected Assign SP 1 Ap 2 As 3 Bp 4 Bs If is selected SP 1 2 Hi 3 Low 4 USP23 Press lt to return to the previous menu after making a selection If Value is selected Ap 12 50 Mo cm Enter sp Enter the value for the setpoint and then press ENTER and the new setpoint value will be displayed on the top line Press ENTER again to return to t
28. B 3 Press 2 to perform a calibration A 1 Edit Calibrate 2 Do 3 Save Clr Two types of calibration are available a 1 point and a 2 point calibration For a 1 point calibration only a single factor is com puted and one sample of known value is needed For 2 point calibration a multi 31 plier and adder offset factors are comput ed and 2 samples of known value are needed 4 Select either the 1 point or 2 point cali bration go to the appropriate section below 3 8 1 One Point Calibration 5 Enter the value of the known solution or desired reading of the sensor press enter Point Cal Enter 2222 6 Press next the calibration will be per formed Main Enter menu no Or NEXT for list While this message is being displayed the current measurement will be shown on the top line 7 After performing the calibration a new cell constant is computed and will be used for all future measurements The new cell constant will remain valid until the unit is powered down or a system reset is per formed f it is desired to save this data beyond these conditions then it can be saved in the Smart Cell as a user s calibra tion by pressing key 5 from the next dis CHAPTER 3 SENSOR TYPES amp CALIBRATION play Cal Done Press 5 to write to cell Press 5 to write the data to the Smart Cell or any other key to return to the menu shown in step 4 3 8 2 Two Point Calibration 5 Set the sens
29. CALIBRATION Smart Sensors can be connected to this unit Thornton s Smart Sensors are pro duced under license from Tektronix Inc U S Patent 4 672 306 Smart Sensors contain a nonvolatile memory integrated circuit NVRAM in the cell housing that stores the sensor type serial number cali bration data and date of calibration Sen sor types available for use with the 770 are Conductivity Resistivity pH ORP Pressure Flow Tank Level Temperature Voltage Frequency Chemical NOTE Refer to each specific sen sor manual provided with each sensor for complete details on installation troubleshooting and service When power is first applied the 770PC determines the sensor type attached to each channel If a Smart Sensor is detected calibration data is read If the unit does not detect a Smart Sensor it will ask for the type of cell to be entered from a list shown on the display The operator must select a sensor type Thereafter the unit will read the sensor every second If a new Smart Sensor is installed the new calibration data will be read If the sensor is removed or a non Smart Sensor is installed unit calibration constants will 19 revert to the default settings 3 1 CELL CONSTANTS Each sensor is defined by a set of calibra tion constants also known as sensor con stants The two constants a Multiplica tion Factor and an Adder Factor are used to derive an
30. E EEEE ew ari ww 0 2 2 Y T d FRONT VIEW CHAPTER 10 TECHNICAL ILLUSTRATIONS 770PC EXPLODED ASSEMBLY 10 2 81 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 3 REAR MOUNTING T TN 104 44 0 156 IN DIA 0 07 IN 5 964 1 L 0 75 0 125 IN R 3 18MM IWJ MN 427 N 441 IN 108 54 112MM 4 02 N 0 045 IN 102 149 1 144 S 0 75 IN 19MM MIN INSTALLATION 5 32 X 3 8 SCREW 210 770PC MINUS BEZEL NOTE UNIT TO UNIT SPACING SHOWN DOES NOT APPLY IF UNITS HAVE THE 4 REAR COVER INSTALLED 82 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 4 FRONT MOUNTING 1 4 DIN i L 11 2 39 4 MIN 35 8 921 35 8 92 1 1 3 8 35 MIN INSTALLATION MOUNTING RETAINING SCREW 770PC NOTE UNIT TO UNIT SPACING SHOWN DOES NOT APPLY UNITS HAVE THE 4 REAR COVER INSTALLED i PANEL MOUNTING BRACKET 83 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 5 PIPE WALL MOUNTING BRACKET DIMENSIONS 3 65 IN REF 92 74 3 65 IN 1 I js 453 I 15 Lo 283 N zi 71 74 141 IN 55 90 E 1 C 2 11 M il 5 19MM 1 50 IN 281 IN
31. EL REPLACING STATIC SENSITIVE DEVICES SHOULD BE PROPERLY GROUNDED TO AVOID COMPONENT DAMAGE WARNING DISCONNECT POWER BEFORE OPENING THE CASE 1 Disconnect all power to the 770PC before processing 70 2 Remove the snap on Bezel from the front of the meter to expose the four screws retaining the Lens Membrane Switch Panel Remove the four retaining screws and carefully lift the Lens Mem brane Switch Panel away from the unit Disconnect the Membrane Switch Cable from the Display Printed Circuit Board PCB See Section 10 Figure 2 3 Place the Lens Membrane Switch Panel a convenient area for retrieval Be sure to keep the o ring seal in position on the back side of the Lens Membrane Switch Panel 4 Remove the four screws retaining the Display PCB The display PCB is con nected to the Measurement LAN PCB by the Display Cable and a single connector which must be carefully disconnected at the Measurement LAN PCB Note the ori entation of the connector for return to its original position during reassembly The connector is keyed for proper orientation and cannot be reversed 5 Place the display PCB static free surface until ready for installation 6 The Measurement LAN PCB is located in the right hand track when viewed from the front of the meter Remove the Measurement LAN PCB from the unit by pulling straight out from the front Place the Measurement LAN PCB static free surface 7 Th
32. HAPTER 8 TECHNICAL SPECIFICATIONS 770PC 75 CHAPTER 9 MODEL NUMBERS 77 91 22222 heehee ul 77 Sc po S cece 77 9 12 Full Displ 8y deca odes 77 9 1 3 lt 55 55 5 0 925 5 75 Se PateheordS sesusscsusschasssssssssas2ss 78 9 2 1 Sensor Patchcords with 8 Pin Female 78 AMP to Tinned Leads 9 2 2 T NET Local Area Network LAN with 4 Pin Female 78 AMP to Tinned leads 9 2 3 T NET Local Area Network LAN Accessories 78 CHAPTER 10 awer ILLUSTRATIONS 79 770PC Overall Dimensions __ _________ 80 102 770PC Exploded Assembly c ccc c ccc cc cc 81 10 3 Rear MOUNING 2222 2 82 10 4 Front Mounting 1 4 DIN 83 10 5 Pipe Wall Mounting Bracket Dimensions 84 10 6 Pipe Wall Mounting 85 10 7 Pipe Wall Mounting 86 10 8 Nema 4X Rear Cover Dimensions 87 10 9 Nema 4X Rear Cover Exploded Assembly 88 10 10 770 Measurement Board ________________________________ 89 10 1
33. ME AVG MENU 1 Set Averaging 2 Set Meas Time Set Measure Time OOO 1 No 2 Med 3 Hi 4 Special CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 21 770PC SOFTWARE MENU TREE COMP TEMP MENU 4 COMP TEMP MENU 1 Temp Source 2 Compensation Temp Source Set Compensation 1 Ch A 2 Ch B 1 ChA 2 Ch B 1 2 1 2 Source 3 1 2 Stand 1 2 Ch B 3 Cation 9 More 3 25 00 4 Glycol 5 IPA Enter No 6 Linear 9 More DegC 2 000 Enter No 2 7 Light 84 8 GlybO 9 100 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 22 770PC SOFTWARE MENU RANGE MENU Set Range 1 Ap 2 As 3 Bp 4 Bs Other Modes 1 2 PSI 1 Auto 2 Volts 1 Auto 2 Kppm 1 Auto 2 mS cm 1 Auto 2 Mo cm range for this 3 KPSI 4 MPSI 3 mvolt 4 uvolt 3 ppm 4 3 uS cm 4 3 4 mode press NEXT Pressure Conductivity Resistivity 101 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 23 770PC SOFTWARE MENU TREE CONTROL MENU 6 CONTROL 3 Analog 4 Hold 2 1 3 4 Which Relay Which setpoint Analog Output Hold Outputs 00 Enter No 1 2 _ Enter No 1 4 Enter No 1 2 Enter Min gt _ 1 2 1 2 1 2 Relay 1 Enable Sp 71 Sig 2 Type Out 1 Sig 2 Min 2 Disab 3 Setup 3 Value 4 Other 3 4 Default 1 R 1 Hys 2 State Out 1 Ap 2 As Min Units 1 x1 Max Units 1 x1 3 Delay 4 Setpts 3 Bp 4 Bs 5 Off 2 u 3 m
34. Measure Menu 9 Other Menu Enter Menu No 1 Display Menu or Next for List Next Key Next Key or or Arrow Key Arrow Key Next Key Next Key 6 Control Menu Avan Kau 4 Comp Temp Menu Aiou Key 2 Calibrate Menu 7 Communc Menu 5 Range Menu 3 Time Avg Menu 9 Other Menus 95 CHAPTER 10 TECHNICAL ILLUSTRATIONS SlOW 6 910 6 S 13 0 8 1 8 11 7 6 IOH Z IoW 6 sieg 9 IoA 6 68 9 1910 6 98 9 S1911 9 vIN Fx POSZH 9 4 5 5 Ad D S U CvIN F 46eq s OBeq r 3J6 q r SIOW 6s SIED Cx 3 ss 6eq z 910 6 OBeQ v 910 6 910 6 Eve 19410 6 SAL x 2 Hd L 189 6 113 L seeibeqr L 6 SEd 2 ISd L 5129 0 2 5 puoo 10 199 IEO 10 aunssald 8D xuer puooeg z yo Voth poN NNJN 38 0SV3IN 0 NNAW AYNSVAW 3a3g8l NNAW AYVMLAOS 38022 77 01 96 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 18 770PC SOFTWARE MENU TREE DISPLAY MENU 1 DISPLAY MENU Display Setsup Enter Line 1 Select Measure 2 Format Display Q Decimal Places Dis Line 1 Ap 1 Auto 2 Fixed 2 As 3 4 Bs L Dec Places Enter D Places 9 97 CHAPTER 10 TECHNICAL ILLUSTRATIONS ON GI edid QI e
35. Mo cm U a 25 14 DegC The calibrated values should read within the specifications listed below and com pared to the measurement values marked on each calibrator This will insure that an accurate calibration has been completed 5 Repeat this procedure for channel B Voltage calibration applies to the following sensors pH Pressure Tank Level Resistivity calibration applies to the follow ing sensors Resistivity Temperature Chemical RESISTANCE TEMPERATURE CALIBRATOR SPECIFICATIONS Conditions Ambient temperature range of 20 30 DegC Resistivity Accuracy 0 0072 Mohms after factory calibration Resistivity Drift During Calibration Peri CHAPTER 5 TRANSMITTER OPERATIONS od 0 00254 Mohms Temperature Accuracy 0 03 DegC after factory calibration VOLTAGE CALIBRATOR SPECIFICATIONS Conditions Ambient temperature range of 20 30 DegC Voltage Accuracy 0 17mV after facto ry calibration RESISTANCE SOURCES Resistor Values Used Four calibrators are available for calibrating the four range resistors in the 770PC These calibrators are specified in table 5 2 Calibrator Resistor Temp Value Resistor C ohms ohms Temp 4 1K 1097 6 25 1 Table 5 2 Accuracy 0 25 Temp Coefficient 100ppm DegC 0 01 DegC Long Term Stability After 1000 0 07 60 Other sources of error Connectors and or cable VOLTAGE SOURCE Voltage
36. Output 0 4 volts 1 2 volt output goes through a resistor divider Temp Coefficient 10ppm DegC 0 0001 DegC 0 012mV DegC Noise 5 uV RMS Long Term Stability Not available Other sources of error Resistors for voltage divider connectors cable 5 15 USING THE FUNCTION KEY While the transmitter is displaying mea surement data the Function key can be used to access some special information The following functions are available Function Number Result 1 The current software revision levels are displayed Programmed EPROM part number measuring software revision level and option board software revision level 2 For Flow Sensors the totalized flow is displayed with extended precision 7 digits for a more accurate mea surement useful for billing purpos es CHAPTER 5 TRANSMITTER OPERATIONS 3 The Smart Sensor identification codes are displayed These codes contain the sensor specification numbers and the serial number 4 Output status of analog outputs A1 and A2 in milliamps and relay status R1 and R2 on or off are displayed To use the function feature the function key is pressed and a number from 1 to 4 is entered 1 Press function then enter the function number Function Menu Enter No gt 2 f function 1 is selected then a typical display might appear as Revs Meas 1 5 Opt 1 1 Dis 1 7 This display indicates that the transmitter is equipped with version 1 5 so
37. P Tank Level 9eNaOH 9eHoSO4 1 1 INTRODUCTION The 770PC and Smart Sensors can be operated without a User Manual or special training Utilizing Thornton s Smart Sen sors the 770PC will automatically deter mine the type of sensor installed make the appropriate measurement and display the measurement in a conventional manner The keypad is used to achieve special results However with a little extra effort the instrument can be customized to mea sure and display an amazing variety of data This section will explain the basic methods of operating the instrument and later sections will elaborate on details CHAPTER 1 GETTING STARTED Read This First Read all of Getting Started prior to using this instrument or sensors The menu dri ven software accessed by the keypad con trols will guide the user through the various operations The following steps must be completed prior to start up Installation Section 2 0 Electrical Section 2 0 3 Sensor Installation amp Maintenance Section 3 0 START UP POWERING UP THE 770PC 1 2 Install one patch cord for each sensor con nect two sensors turn on the power and momentarily the unit will begin to display the startup messages 1 display software version 2 measurement software ver sion If a Smart Sensor is not con nected to a channel the unit will 3 request its type After the user describes the non Smart Sens
38. PCs together pro vides users with a variety of features and advantages Personal computer PLC or modem interface The Thornton LAN operates on a baud rate of 691 2 kbits sec For a personal comput er PLC or modem to accept data a Gate way device Thornton part 774 xxx is required which accepts the LAN data and retransmits it on a standard RS 232 port at 19 2kbaud 63 NOTE An interface communi cation program is required for reading the data from Gate way RS 232 port Thornton Associates Inc has a com munications program Thorn ton part 7700 which inter faces an IBM compatible with the Gateway unit The pro gram enables the user to dis play measurements change parameter configurations save data on disk for histori cal recall test the LAN and send data by modem to a remote location Please con tact Thornton Associates Inc for information and pric ing A 770PC transmitter with a display Thorn ton part 772 xxx can assume the identity of any other transmitter on the LAN whether the other unit is a blind transmitter no display Thornton part 771 xxx or another transmitter Once control over another transmitter has been established the menu structure of the controlled unit can be scrolled through This simulates physical presence at the controlled unit 6 2 LAN FEATURES Operating the LAN with a PC or a PLG offers the advantage of allowing a user to CHAPTER 6 NETWORKING mon
39. Part No 84263 INSTRUCTION MANUAL 7 0PC PROCESS CONTROLLER thornton CHAPTER 2 CHAPTER 3 TABLE OF CONTENTS CHAPTER 1 GETTING STARTED 7 1 1 Introduction 7 1 2 Start Up Powering up the 77 8 1 3 Operating odes uuu ieee totes u Seen nee 8 1 4 gt Display 9 T5 ss h 11 1 5 Men s 1 61 Top Level Opti riS u u L u u uu u 12 1 7 Helpful Hints 13 TRANSMITTER INSTALLATION 15 2 1 Unpacking eet 15 2 2 Panel Mounting Cut Out and Installation __________ c 15 2 2 1 Wall Pipe Mounting amp Installation 15 2 3 Electrical Connections 16 SENSOR TYPES AND CALIBRATION 19 gt Well Gonstants gt 2 2 4 19 Measurement Types and 5 20 3 3 Compensation 21 3 4 Resistivity Conductivity Measurements 21 341 TDS deese 21 3 4 2 TDS Multiplier 22 3 5
40. SIGA 2 MO VUA GUY qe Cn gt 2406 RET POWER GND amp amp e T NS 92 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 14 LAN CABLES AND TERMINATORS BLUE 0 8 1 LAN 203 2 3 CONNECT TO TIOPC OR SHIELD TO 4 LAN GATEWAY NETWORK CONNECTORS 8 6 IN CABLE 152 MM LAN NETWORK CABLE 1 2 3 4 NETWORK TERMINATOR SET 1000 55 32 IN 71MM TYPICAL 93 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 15 SMART SENSOR CABLIBRATORS AMP CONNECTOR 94 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 16 770 SOFTWARE MENU TREE MAIN MENU Menu Key Next Key Next Key j or 8 Security Menu Arrow Key Main Arrow Key 0
41. SOR TYPES amp CALIBRATION brown 8 to 8 VCC pink 7 to 7 VAN and orange 4 to 4 AG Note There are terminals for two sensors on the module i e two VCC two 24V and two termi nals Only one of each is required if only one 24VDC sen sor is used THE 5VDC LINE IN THE PATCH CORD NOW HAS 24vDC DO NOT ATTACH A NON 24VDC SENSOR TO A PATCH CORD THAT HAS BEEN CONVERTED TO 24VDC ALSO DO NOT HOOK UP A 24VDC SENSOR TO A PATCH CORD THAT HAS NOT BEEN CONVERTED Attach the other five patch cord wires tothe 3 12 3 Specifications terminal block on the 770PC according to section 2 03 When completed the back of Output Voltage 24VDC the 770PC should look like Fig 1 on the Voltage Regulation 5 following page an installation with two 1 2 volts 24VDC sensors Current output 50 mA Output Ripple 100mV p p Note After all the wires are con Operating Temperature 20 C to 70 C nected there will not be a wire in Wire Length 6 in the 7 VAN terminal on the 770PC This is normal The 24VDC module has two pieces of Velcro attached to the bottom One piece is adhered to the back of the module the other piece should be attached to the 770PC The module can then be mounted to the 770PC Thornton recommends that the 24 volt supply be installed on the exterior side of the meter If this mounting is not feasible the module may be installed between the two terminal connectors on the back of the 77
42. assigned 45 5 3 DISPLAY FORMAT In the automatic mode the number being displayed can have from 0 4 digits after the decimal point Each line of the display can be set to display a set number of digits to the right of the decimal point This feature is useful if a reading fluctuates and the last digit s are difficult to read Each line can be set to automatically adjust this number Default setting Each line will automati cally adjust the number of decimal digits To change settings 1 Press menu then press 1 for the dis play menu Main Enter menu no Or NEXT for list 2 Enter 1 2 or 3 Display Setup Enter Line No 3 Press 2 to format the display for the line selected 1 Select Measure 2 Format Display 4 Press 2 to select fixed digits Decimal Places 1 Auto 2 Fixed 5 The current setting will be displayed The current setting is in position X enter a number from 0 to 4 CHAPTER 5 TRANSMITTER OPERATIONS L X Dec Places Enter D Places 6 Press lt to back up to the display setup menu to program another line or press exit menu to exit the menus Repeat this process until all display lines have been set 5 4 RANGE SELECTION Only the resistivity conductivity and TDS measurements have selectable ranges Default setting auto ranging enabled To set a specific range 1 Press menu then press 5 for the range menu Main Enter menu no Or NEXT for list 2 Select
43. ation of these special elec trodes The UP setting is accessed through the Edit Calibrate menu 3 5 4 Setting UP and STC Factors for pH To set the UP or STC factors for a special pH application 1 Press Menu Main Enter menu no Or NEXT for list 2 Press 2 for the Calibrate Menu Calibrate Menu 1 ChA 2 Ch B 3 Select the desired channel For example press 2 for channel B CHAPTER 3 SENSOR 5 CALIBRATION B Calib 1 Edit 2 Do 3 Save Clr 4 Press 1 to enter the Edit Menu Edit pH 1 Cell 2 Temp 7 UP 8 SC 5 Press 7 to edit UP factor or press 8 to edit the STC factor For example press 8 to edit the STC B STC 00000 Enter No gt Enter the new STC factor and press the Enter key when done The new value will appear on the top line Press Enter again to return to the previous menu 3 6 PRESSURE MEASUREMENTS 3 6 1 Differential Pressure If two pressure sensors are installed in a system and a differential pressure calcula tion is required for the application use the following procedure 1 Press menu then press 0 to enter the measurement menu Main Enter menu no Or NEXT for list 2 One channel A or B will be required to measure differential pressure Press 1 to select channel A 25 Measurement Mode 1 Ch A 2 Ch B 3 For the purpose of this example press 1 Ch A Measurement 1 Prime 2 Second 4 Press 9 to select more 1 PSI 3 mmHg 2 KPAS 9 More
44. bration data do to step Press 1 to save the calibration data as a user s calibration A message will indicate that the data has been saved Press next key to return to the menu in step 3 Calibrate Data saved to Cell A 6 Press 2 to clear the calibration data A message will be displayed requesting con firmation Press key 5 to clear the data A Reset Default Calib 5 Yes 7 A message will indicate that the data has been cleared Press next key to return to the menu in step 3 Calib is cleared Press NEXT key 3 12 OPTIONAL 24VDC SENSOR POWER SUPPLY CHAPTER 3 SENSOR TYPES CALIBRATION This module allows the 770PC to operate with sensors that are 24VDC loop pow ered The module takes the 5VDC supply on the back of the 770PC meter and steps it up to 24VDC The module must be wired to the back of the 770PC and then the sensor patch cord is wired into the ter minal blocks on the 770PC and the power supply The power supply is designed to handle the 24VDC requirements of two sensors If two sensors that require 24 volts connected to the 770PC use only one sup ply WARNING DO NOT HOOK UP POWER SUPPLIES TO ONE 770PC THE CURRENT DRAW ON THE 770PC WILL EXCEED THE RECOMMENDED LIMIT 3 12 1 Installing the 24V module to the 770PC If a patch cord is not connected to the channel or channels that require a 24VDC power supply then proceed to section 3 12 2 If a patch cord is connect ed to the
45. c 5 Hz 9 More Press 9 for other measurement options 7 Litr 8 L min 0 Ft s 9 More Pressure 1 PSI 2 KPas 3 mmHg 9 More Press 9 for other measurement options 4 Volt 5 Diff 6 Bars 9 More Tank Level 1 Full 3 PSI 2 Gals 4 m 3 5 Press to back up to the previous menu or press exit menu to exit the menus Repeat this process until all 4 measurements have been assigned 5 2 DISPLAY SETUP Each line of the display can display any one of the 4 measurements For example line 1 can be programmed to display Chan CHAPTER 5 TRANSMITTER OPERATIONS nel B primary line 2 can display Channel A Primary and line 3 can display Channel A secondary Default settings Line 1 Channel A Primary Line 2 Channel A Primary Line 3 Channel B Primary To change any of these settings 1 Press menu then press 1 for the dis play menu Main Enter menu no Or NEXT for list 2 Press 1 2 or 3 Display Setup Enter Line No 3 Press 1 to assign a measurement to a display line 1 Select Measure 2 Format Display 4 Select on of the 4 measurements to be displayed on the line number entered in step 2 It is important that you remember the measurement type assigned to these measurements from the previous section Dis Line 1 1 Ap 2 3 Bp 4 Bs 5 Press lt to back up to the previous menu or Press exit menu to exit the menus Repeat this process until all dis play lines have been
46. ch can process four different measures simul taneously A three line vacuum fluorescent display indicates measurements and setup information A menu structure allows the operator to modify all operational parame ters from the 15 key keyboard The 770PC is equipped with two relays for process control A 770PC with patented Smart Sensors provides highly accurate monitoring and control measuring multiple parameters with one instrument using different sen sors Each sensor contains NVRAM nonvolatile random access memory which stores sensor type calibration data date of calibration and serial number The sensor type and stored information are identified by the transmitter which auto matically compensates for manufacturing variables for that particular sensor The result is improved accuracy for resistance of 0 3 of meter readings for resistance measurements see specifications Transmitters can be connected on Thorn ton s 2 wire Local Area Network LAN which connects separate dual channel instruments on a single transmission line Any transmitter can be monitored or repro grammed by any other transmitter for process monitoring or control An RS 232 output provides real time data with a modem or personal computer The following is the current list of parame ters measured Resistivity Conductivity TDS ppm as NaCl Rejection Temperature pH mV Flow Rate A flow Flow Velocity Recovery Pressure A
47. clock wise until the meter is tight against the panel Tighten the second mounting retaining screw counterclockwise until tight Ver ify that both screws are tight and the meter is firmly mounted to the panel 2 2 1 Wall Pipe Mounting amp Installation WARNING PIPE MOUNTING IS NOT RECOMMENDED IF THE PIPE IS SUBJECT TO VIBRATION A versatile Wall Pipe mounting bracket part number 15533 is available for vari ous mounting locations A 3 625 X 3 625 92mm X 92mm 1 4 DIN cut out is provid ed for installing the instrument on this right angle painted aluminum bracket Four mounting holes are provided for securing the bracket to a flat surface or around a pipe Four slots are also provided for fas tening with banding tape worm clamps or other fastening hardware Slide the meter into the cutout From the rear of the meter insert a long slotted screwdriver into on of the two mounting retaining screws see 770PC Front Mount ed in 1 4 DIN Panel Opening illustration in the rear of this manual Turn the mounting retaining screw counterclockwise until the CHAPTER 2 TRANSMITTER INSTALLATION meter is tight against the panel Tighten the second mounting retaining screw coun terclockwise until tight Verify that both screws are tight and the meter is firmly mounted to the bracket 2 3 ELECTRICAL CONNECTIONS Make all electrical connections to the rear of the transmitter case Connections must be made with one senso
48. did 9 1199 1 9 ON XXXX ISd XEN 1uBieH Laly 2 ISd XEN JUEL e geireveun 5 SIUL 1uBi H ON H31N3 XXX XX T139 ON 5 1 juejsuo dwa uo 25 4 Id XXX XX ON H31N3 XXX XX T139 SAPPY 18D Sjuejsuo y I9O I IPS NNAW 1 ON NXXX XX ON 133 XXXX ISd XEN ISd WNWIXEN 199 L 1 3 ON 148403 y Z HIN 2 189 PA 6 od c L queo guoc vuo t nu N ayeiqueo enseeiN 0 LX3N 58914 XXXXX l 99 01 0 6 SsoJd uoq 20 einseoju 0 LXAN SS 1d XXXXX 7 XXXX 1913 120 lutod IN 501 6 dual 2 199 109 91M 6 ss d auop IX3N X 1199 o penes ereiqieo XXXX 19103 c einseo w 0 LX3N XXXXX 3 X leuqiieo 190 01 1 2 Z ereq LX3N 85914 si queo SeA 4 AED jnejeg 1eseu nN3MW 31VH8l IVO 3a3d8l NNAW 3HVMLJOS 38022 6 01 98 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 20 770PC SOFTWARE MENU TREE TIME AVG MENU 3 TI
49. e see Section 6 0 Networking 8 Averaging allows a user to program the 770PC to average measurements for sta bilized readings See Section 5 10 Mea surement Averaging 14 CHAPTER 2 TRANSMITTER INSTALLATION 2 1 UNPACKING Each 770PC is packed in an individual biodegradable carton Customers are advised to retain packaging in the event that the instrument must be returned to Thornton Associates for service Open cartons carefully to insure that products are not damaged or dropped Carton contents 1 770PC Transmitter 1 Manual 2 2 PANEL MOUNTING CUT OUT AND INSTALLATION Panels must have openings cut to 3 5 8 X 3 5 8 92mm x 92mm 1 4 DIN Take note of transmitter case dimensions to insure proper spacing on panels for multiple bezel clearance if more than one transmitter is mounted on a panel Panel cutouts must be clean and free of burrs and sharp edges The proper dimen sions allow a transmitter to slide freely into the cutout If the NEMA 4X Rear Cover is used in a panel mounted installation the 770PC unit must be installed in the panel opening before the NEMA 4X Rear Cover is installed Install panel gasket slide the meter into the cutout From the rear of the meter insert a long screwdriver into one of the 15 two mounting retaining screws see 770PC Front Mounted in 1 4 DIN Panel Opening illustration in the rear of this manual CAUTION Turn the mounting retaining screw counter
50. e water and general purpose applications Standard Compensation using the 1994 high purity water research of Thornton and Light is recommended Default setting standard compensation method To change the compensation 1 Press menu then press 4 for the com pensation menu CHAPTER 5 TRANSMITTER OPERATIONS Main Enter menu no Or NEXT for list 2 Press 2 1 Temp Source 2 Compensation 3 Select a channel Set Compensation 1 2 Ch B 4 Select a compensation method 2 Stand 3 Cation 9 Press key 9 for more selections 5 IPA 9 More 4 Glycol 6 Linear Press key 9 for more selections 7 Light 84 8 Gly50 9 More 5 If Linear is selected then the next menu will allow the setting of the linear value as per DegreeC A DegC 2 000 Enter No 5 6 TEMPERATURE SOURCE Measurements such as the various con ductance types may require a temperature 48 value if compensated readings are desired The pH measurement always requires a temperature reading for proper measure ment processing Three options are avail able for specifying the source of tempera ture 1 From its own sensor a temperature sensor must be built into the sensor 2 From the other sensor a temperature sensor is not installed on this channel but is available to the other channel 3 Manual source if the temperature of the solution is known then it can be entered manually in degrees Celsius De
51. e 770PC Operating Software Integrated Circuit IC is located on the Measurement PCB in the location desig nated U19 in the lower left corner See Section 10 Figure 10 of the PCB The IC CHAPTER 7 SERVICE is removable from the socket which is sol dered to the PCB 8 Carefully insert flat screwdriver between the IC and the socket at the edge of the Measurement PCB Pry the iC away from the socket until the IC is removed completely See Section 10 Figure 10 DO NOT pry the socket from the PCB 9 Align the pins of the new version IC software with the socket pins CAUTION THE ORIENTATION OF THE IC IS CRITICAL IF IMPROPERLY INSTALLED PERMANENT DAMAGE MAY OCCUR INSTALL THE HALF CIRCLE MARKER ON THE IC WITH THE HALF CIRCLE MARKER ON THE SOCKET PRESS THE IC FIRMLY INTO THE SOCKET TO ENSURE A QUALITY CONNECTION 10 Replace the Measurement LAN PCB in the 770PC with the component side facing inward This PCB is keyed and will only fit in the right hand track connector 11 Connect the four wire Display Cable connector from the Display PCB to the Measurement LAN PCB CAUTION THIS CONNECTOR MUST BE ORIENTED AS PREVIOUSLY INSTALLED AND IS KEYED TO GUARANTEE PROPER INSTALLATION BE SURE THE CONNECTOR IS INSTALLED COVERING ALL THE CONNECTOR PINS 71 12 Replace the four screws securing the Display PCB 13 Reinstall the Membrane Switch Cable connector to the pins on the Display PCB make certain that
52. e percent rejec tion measurement must also be programmed in channel B The remaining channel may be pro grammed to display any of the display options available for a conductivity sensor i e conductivity resistivity temperature or TDS To program the transmitter for percent rejection 1 Press menu then press 0 for the mea surement mode Main Enter menu no Or NEXT for list 2 For the purpose of this example chan nel A will be used for the percent rejection measurement Press 1 for Channel A This will select channel A as the channel to measure and display the percent rejection measurement Measurement Mode 1 ChA 2 Ch B 3 Again for the purposes of this example press 1 for Primary Ch A Measurement 1 Prime 2 Second 4 Press 9 notice that the asterisk moves CHAPTER 5 TRANSMITTER OPERATIONS to that selection 2 Con 9 More 1 Res 3 TDS The additional options will be displayed 4 Deg C 6 Rej 5 Deg F 9 More 5 Press 6 notice the asterisk move to the 6 Rej 4 Deg C 6 Rej 5 Deg F 9 More 6 Press exit menu to exit the menus and the transmitter will begin to display the measurements in Percent Rejection 90 00 A 90 00 Rej B 31 54 mS cm If Channel B is used as the Rejection channel Channel B may then be pro grammed as A was above If the transmit ter does not display the A Primary measurement in the large characters line 1 as above see the m
53. ed resistivity by the cell constant to get a value for determining the range resistor being used Example If a cell with a constant of 0 1 cm 1 is measuring water at 1 0 Mohm cm at 25 then the value for determining the range resistor used is 1 0 0 1 100 Kohms and the meter is measuring on range resistor 3 Table 5 1 Range Resistor Resistance Range ohms 5 14 2 Voltage Calibrator CHAPTER 5 TRANSMITTER OPERATIONS If the instrument reads within 1mv of the label value an instrument calibration is not required However a calibration may be performed to fine tune the instrument 5 14 3 Calibration Procedure 1 Connect the Smart Resistivity or Volt age Calibrator to channel For the pur pose of this manual the Resistivity Cali brator will be used NOTE Password Lockout must be disabled or bypassed in order to access the menus and to per form this calibration CAL A 18 18 Mo cm U 25 14 Deg C 2 Press menu 1 Do Calibration 2 Exit Menus 3 Press 1 to do a calibration Please Wait Calibrating Unit This message will flash on the display for approximately three seconds while the instrument is being automatically calibrat ed by the Smart Automatic Calibrator 1 Do Calibration 2 Exit Menus 59 4 Press 2 or exit menu to leave menus The displayed measurements will now show the calibrated Resistance and Tem perature or Voltage CAL 18 18
54. enu section on pro gramming the display in section 5 02 Dis play Setup if that is desired 5 13 SECURITY PASSWORD LOCKOUT MENUS The Password Lockout feature allows a 56 password owner to select a password number to lock the menu software from unauthorized access Password Lockout is possible in a single point of use instru ment or throughout a network of instru ments 1 Press menu Main Enter menu no Or NEXT for list 2 Press 8 for Password Lockout access Lockout 1 Enab 2 Disab 3 Chang This menu allows the user to Enable Disable or change the Password Lockout access number The asterisk at 2 Disab indicates that the Password Lockout is dis abled and the security lock is NOT activat ed A user password 00000 is stored the instrument software during the manu facturing process For unique system security a new 5 digit user specified pass word is recommended NOTE A unique user password can be changed only when the password owner decides 3 To program your personal password Press 3 Change Enter Old Pass CHAPTER 5 TRANSMITTER OPERATIONS 4 Enter the factory installed password 00000 Change Enter Old Pass XXXXX gt 5 Press enter and enter the new pass word Enter New Password XXXXX gt 6 Press enter Password XXXXX Press 5 if OK 7 The new password is displayed on line 1 If the correct password is displayed press 5 or
55. etracts an entered number or moves up one level in the menu calc is a feature that will be implemented in the future control enters the menu at the Control menu setpoints relays and signal out puts display enter the menu at Display setup enter accepts data entry a second enter 11 returns to the previous menu function is used to access special data and information menu enters the menu structure from the measurement display mode enters the menu at the Measure menu next steps through menu options or tog gles displayed data recall is a feature that will be implemented in the future sensor enters the menu at the Range menu start is a feature that will be implemented in the future store is a feature that will be implemented in the future time is a feature that will be implemented in the future 1 5 NUMERICAL ENTRIES Numbers may be entered with up to 5 dig its including an optional decimal point and an optional negative sign When making a numerical entry press lt to clear the digits entered and press enter to accept the number After pressing enter the number entered will be displayed on the second CHAPTER 1 GETTING STARTED line if it is accepted enter must be pressed again to leave the menu and return to the previous menu 1 6 MENUS Menus are arranged in a tree like structure which will allow complete control of all 770PC features Menu options can be cycled th
56. f the timer is set to a value greater than 0 then the top line of the display will flash the message Hold when displaying measurements typical display is ting the time to zero 42 The hold feature can be terminated by set CHAPTER 5 TRANSMITTER OPERATIONS In the menu mode all parameters can be viewed and or modified from the keypad While the unit is displaying measurement data enter the menu by pressing menu The lt key is always used to return to the previous menu The exit menu key may be pressed at any time to exit the menus While the unit is in the menus measure ments continue to be performed and all control functions remain operational The menus are equipped with an automatic time out feature If a key is not pressed within a 4 minute period the menus will be terminated and the unit will return to the display of measurement data The menu time out feature is disabled when a 1 point or 2 point calibration is being performed All 770PC parameters are saved in a non volatile memory integrated circuit and are restored upon power up A copy of the Block Diagram 770PC menu structure is located in the Appendix 5 1 MEASUREMENT TYPE SELECTION The 770PC measures four parameters in each cycle These measurements are referred to as Channel A Primary Ap Channel A Secondary As Channel B Pri mary Bp and Channel B Secondary Bs Each can be assigned a specific measure type by entering the
57. fault setting temperature reading from the same channel To change the source of temperature 1 Press menu then press 4 for the com pensation menu Main Enter menu no Or NEXT for list 2 Press 1 1 Temp Source 2 Toggle Comp Un 3 Select a channel Temp Source 1 ChA 2 ChB CHAPTER 5 TRANSMITTER OPERATIONS 4 Select a temperature compensation source If manual is chosen go to Step 5 If Channel A or Channel B are chosen go to Step 6 3 Man 2 Ch B A Source 1 Ch A Note that both channels A and B can use this temperature source for compensation purposes Select 1 if it is desired to use the tempera ture reading of channel for com pensation Select 2 to allow chan nel B to be used as the tempera ture source Select to enter temperature manually from the key pad instead of measuring the tem perature from either channel 5 Press 3 enter a number from the key pad and press enter Temp XX XX Enter No The number entered is displayed on the bottom line If a mistake is made while entering the number press lt to clear the entry Press enter and the value will be displayed in the XX XX position Compen sated Temperature is complete When fin ished entering the number press enter a second time to return to the previous menu 6 Press lt to back up to the previous menu or press exit menu to exit the 49 menus channels Repeat this process for both 5
58. for Edit Calibrate A 1 Edit Calibrate 2 Do 3 Save Clr 4 Press 6 to edit the pipe ID Edit 1 Cell Con 6 Pipe ID 5 The following menu will allow you to change this constant CHAPTER 3 SENSOR TYPES amp CALIBRATION Pipe ID XX XX Enter No After entering the number in inches press enter and the new constant should be dis played on the top line Press enter again to return to the previous menu 3 11 SAVING CALIBRATION DATA The cell constants can be modified by manually editing the number s or perform ing a calibration The modified cell stants will remain in effect until the power is turned off or a system reset is performed This data can be saved in the Smart Cell as a User s Calibration The user s cali bration data will automatically be read upon power up or after a system reset This data will remain in effect until it is cleared via the menus or another calibra tion is performed Because the data is saved in the Smart Cell the calibration is valid even if the cell is moved to another transmitter To save or clear a user s calibration 1 Press menu then press 2 for the cali brate menu Main Enter menu no Or NEXT for list 2 Select a channel 34 Calibrate Menu 1 ChA 2 Ch B 3 Press 1 for Edit Calibrate A 1 Edit Calibrate 2 Do 3 Save Clr 4 Press 3 to access the user s calibration menu A Calibrate Data 1 Save 2 Clear 5 To clear the cali
59. ftware the optional board is equipped with version 1 1 software and the display is equipped with version 1 7 software 3 If function 2 is selected then a typical display might appear as 61 A 7518 365 Gal B 12142 55 Gal This display indicates that channel A has recorded 7 518 365 gallons 4 f function 3 is selected then a typical display might appear as A z 01031234 B 03015678 This display shows the Smart Sensor identification codes This feature and is used for troubleshooting purposes 5 f function 4 is selected then a typical display may appear as A1 4 0000 R1 Off 2 4 0000 R2 Off This display indicates that both analog out puts are at the low end and both relays are deactivated in their normal states 62 CHAPTER 6 NETWORKING The network requires a shielded two con ductor cable since all devices communi cate over the same line There are no two equivalent cables available The Thornton Network is a customized Local Area Network LAN for use with 770PC transmitters a single 2 wire transmission line The LAN is used to Inquire or set the parameters of any 770PC remote control or from a computer interface Transmit measurement data to a PC or PLC for real time data acquisition or control Capabilities exist for off site monitoring Update transmitter software with future releases 6 1 LAN CAPABILITIES AND APPLICATIONS Networking several 770
60. g Rear Entry Plate Rear Entry Plate Gasket Plug Lock Nut Washer Qty 1 1 Part 1000 71 12158 27194 15535 27193 23139 21289 23054 CHAPTER 7 SERVICE 7 7 TROUBLESHOOTING Problem 1 Display is blank 2 Unit cannot identify Smart Sensor 3 Wrong readings 4 Keypad not functioning 5 Unit missing on network 6 Network not operating properly 7 Negative readings in rejection Possible Cause no power to unit blown fuse loose display cable display cable improperly connected circuit board failure sensor improperly wired non smart sensor installed sensor patch cord is defective defective sensor Non volatile RAM failed patch cord is too long non Thornton patch cord sensor improperly installed temperature compensation is incorrectly set or disabled sensor patch cord is defective defective sensor measurement board failure keypad cable connector loose or broken defective keypad no power to unit address switch incorrectly set loose network cables units with duplicate address Measure LAN circuit board failure network cable crossed at one or more units missing terminator s at cable end maximum cable length exceeded units with duplicate address defective Measure LAN circuit board on a unit e the rejection measurements is calculated on the opposite channel 73 74 CHAPTER 8
61. he previous menu If Other is selected an over range condi tion will be considered to be the same as an active setpoint condition 50 5 7 1 USP Setpoint The USP type setpoint is a high alarm used for pharmaceutical water monitoring with non temperature compensated measure ments USP 23 United States Pharma copoeia 23rd edition requires that non temperature compensated conductivity of pharmaceutical waters must be below a limit from its table based on the tempera ture of the sample The 770PC instrument has the USP 23 table in memory and auto matically determines the conductivity limit based on the measured temperature The USP 23 setpoint value set in the 770PC is the percentage safety margin below the USP 23 limits to activate the set point For example the USP table conduc tivity limit at 15 C is 1 0 uS cm If the set point value is set at 4096 then the setpoint will activate whenever the conductivity goes above 0 6 uS cm at 15 C CHAPTER 5 TRANSMITTER OPERATIONS Stage 1 Conductivity Limits as a Func tion of Temperature Temperature Conductivity Limit uS cm 1 1 oo 4 O1 Co NIN nhi 5 8 RELAYS Two relays can be programmed to activate when a setpoint error occurs with any of the four setpoints Each relay has the fol lowing programmable parameters 1 Assigned Setpoints each relay can be set to be activated from an error on any
62. he spine but must be within 50 feet of the host computer unless data transmission repeaters are used For opti mum operation the Gateway should be at the center of the spine Note Each 770PC has a IAN communication interface built in therefore the initial hookup and any future expansion can be connected in the same manner Please use the following steps 1 See the installation instructions for the individual 77 transmitters 2 Take the interconnect cable Thornton part 1000 54 and connect the shielded tin lead wire to LAN on the rear terminal block of the transmitter Next con nect the blue tin lead wire to LAN on the rear terminal block A female and a male Amp are available for ing the network cables 3 2 wire network cable Thornton part 1xxx 78 to the appropriate CHAPTER 6 NETWORKING connection female Amp to male Amp of the y interconnect cable These LAN cables are available in 5 10 25 50 and 100 foot lengths Attach a second 2 wire network cable to the appropriate connector male Amp to female Amp of the y cable 4 When all the 770PC transmitters are connected there will be 1 open female Amp connector and 1 open male Amp connector on each end of the last remain ing y cables Attach the LAN terminators Thornton part 1000 55 to each remain ing open connector The terminators reduce interference
63. hm cm kohm cm Mohm cm Total Dissolved Solids TDS in kppm ppt ppm mppm ppb Temperature in degrees Celsius or Fahrenheit pH Sensor 10 pH in the range 0 to 14 Volts millivolts or microvolts Temperature in degrees Celsius or Fahrenheit ORP Oxidation Reduction or Redox Potential Sensor Measurement in millivolts Flow Sensor Total flow in gallons liters or cubic meters Flow rate in gallons min liters min or meter hour Frequency Velocity in feet second Pressure Sensor Gauge pressure in PSI millimeters of mercury kilo Pascals or voltage A Pressure Tank Level Sensor Volume of liquid in cubic meters liters gallons or full Temperature Sensor Temperature in degrees Celsius or Fahrenheit Chemical Sensor Resistivity conductivity temperature NaOH HoSO4 Keypad amp Menu Software CHAPTER 1 GETTING STARTED The 15 key keypad provides a flexible con trol with few keystrokes Here is a brief summary of what the keys do Try a few of them The two most important keys on the key pad are exit menu and menu The exit menu key is used to escape from z recall 8 the menu structure and return to measure ment display ALL menu key allows the user to enter the main menu structure 0 9 and are used to select menu items or to enter data lt Backspace or Clear r
64. input of the channel that needs the 24v supply remove the brown wire 8 pink wire 7 and orange wire 4 wires from the terminal block see figure 1 on the following page Note The 770PC is a two chan nel device Position the power supply with the terminal block at the top and install the patch cord 35 for channel B into the top eight terminal connections Channel A if used is installed in the bottom eight terminal connections Locate the input wires on the 24VDG module that are brown 48 and orange 4 Insert the brown wire 8 into the terminal marked 8 VCC on the terminal block and tighten Insert the orange wire 4 into the terminal 4 AG and tighten Note Since there are two chan nels on the back of the 770PC use the ground and VCC from the same channel Do not mix grounds and powers from differ ent channels 3 12 2 Attaching a patch cord to the 24 volt supply Note This section assumes the meter has only one sensor that requires 24VDC supply If two 24VDC sensors will be installed to the meter then follow these instructions for both patch cords Locate the brown 88 pink 7 and orange 4 wires on the patch cord s These wires must be attached to the 24VDC module The module has a label which describes the connections See Fig 2 Connect the brown pink and orange wires from the patch cord to the terminal block on the 24VDC module Install the CHAPTER 3 SEN
65. ion provides a simple and automatic method of Voltage or Resistivity calibration for the 770PC instru ment with NIST traceability Simply nect the Calibrator to channel A or B and follow these simple instructions for automatic calibration of each channel Each channel must be calibrated separate ly for a complete calibration NOTE The 770PC instrument must be operating for a minimum of one hour prior to calibration This warm up period will insure the most accurate calibration The Smart Calibrators are labeled with cal ibration values listed for resistivity temper ature and voltage 5 14 1 Resistance Temperature Calibrator If the instrument reading is within 0 396 in resistivity and 0 27 C in temperature of 58 the value listed on the calibrator instru ment calibration is not required However a calibration may be performed to fine tune the instrument The 770PC uses four ranges resistors for measuring resistivity For optimal perfor mance over the entire instrument range each range resistor should be calibrated If only a small resistivity range is being mea sured then it is only necessary to calibrate the one or two range resistors that are used to measure that range Table 5 1 shows the resistance ranges that are mea sured by each range resistor Note that the ranges overlap and that they apply to a 1 0 cell constant cell For cells with constants other than 1 0 multiply the measur
66. itor and control a system from a cen tral computer terminal Data can be received stored and manipulated for his torical graphs and trend analysis A central operator can view the entire system from a single location The interface with can be digital with the LAN or analog out puts can be obtained directly from the instruments Operating the LAN with a modem offers the same advantage as using a PC and a PLC Off site monitoring enables a service company to dial a cus tomer s system through a modem and monitor the readings or change parame ters If off site monitoring is desired the modem interface offers a savings in ser vice calls provides a professional service image and gives a service organization a convenience factor Any current modem or modem card may be used to interface with the gateway device Future software upgrades may be down loaded either on site or through a modem Without this feature a user will have to replace the program chip 6 3 LAN GUIDELINES One spine network can handle multiple transmitters Thornton advises a maximum of 40 transmitter per spine For large sys tems this may limit a system shut down in the event of a power loss Note The maximum distance for an indi vidual spine is 1000 feet end to end 64 Note One gateway device Thornton part 774 xxx is needed per spine if an RS 232 device is used to control the LAN The gateway can be placed in any position along t
67. ity of this address number Please wait Checking Network If the address is used by another device then the following message will be dis played Address XXX is used Press Next If the address is used then press the Next key and enter a new address number If the address is accepted then the menu shown in step 3 will be displayed with the new address number For example if the address is set to 95 and is accepted then the menu will appear as LAN address 95 Enter No gt When done press the Exit menu CHAPTER 6 NETWORKING Table 6 1 Measurement Board Switch Settings For Instruments With Software Earlier Than Version 2 0 The LAN address for the measurement board is set using switch SW1 In the follow ing table d indicates that the switch is down in the direction of the arrow or facing U10 LAN Switches LAN Switches LAN Switches LAN Switches Addr 12345678 Addr 12345678 Addr 12345678 Addr 12345678 0 not used 32 dduddddd 64 dudddddd 96 duuddddd 1 dddddddu 33 dduddddu 65 dudddddu 97 duuddddu 2 ddddddud 34 ddudddud 66 duddddud 98 duudddud 3 dddddduu 35 dduddduu 67 dudddduu 99 duuddduu 4 dddddudd 36 dduddudd 68 dudddudd 100 duuddudd 5 dddddudu 37 dduddudu 69 dudddudu 101 duuddudu 6 ddddduud 38 ddudduud 70 duddduud 102 duudduud
68. l 1 0 0 To modify the sensor calibration constant CHAPTER 3 SENSOR TYPES CALIBRATION 1 Press menu then press 2 for the cali brate menu Main Enter menu no Or NEXT for list 2 Selecta channel Calibrate Menu 1 Ch A 2 Ch B 3 Press 1 to edit a sensor constant A 1 Edit Calibrate 2 Do 3 Save Clr 4 Press 1 and go to step 5 or Press 2 and go to step 6 Edit 1 Cell Con 2 Temp Constant 5 Select one of the sensor constants to be edited Cell 1 Mult 2 Additive A menu will appear with the current sensor constant on the top line and will ask for a new value on the second line For exam ple for the multiplication sensor constant the display may appear as Cell M 0 100 Enter No Enter the number press enter and the new sensor constant will be displayed on the top line Press enter again to return to the previous menu 6 The display and edit of these constants is similar to the procedure outlined in step 5 33 Temp 1 Mult 2 Additive 3 10 ENTERING THE INSIDE PIPE DIAMETER The flow velocity measurement uses the inside diameter of the pipe to compute this measurement The inside diameter is expressed in inches NOTE This constant will only appear in the menus when the Flow Level sensor is installed 1 Press menu then press 2 for the cali brate menu Main Enter menu no Or NEXT for list 2 Select channel Calibrate Menu 1 Ch A 2 Ch B 3 Press 1
69. lue must not be changed in this menu or the sensor will have to be recalibrated 3 5 3 pH Measurements Advanced Features The solution temperature coefficient STC allows selection of temperature compensa tion for the ionization of pure waters This is in addition to the conventional Nernst temperature compensation for the sensor which is always active Solution tempera ture compensation is used on power plant and other pure water samples less than 30 uS cm where the changing ionization of water is significant It references the pH to 25 C In all other applications the STC value is left at zero For ammonia phosphate and or amine treated power plant samples the solution temperature coefficient STC should be set to 0 033 pH C For pure makeup water or boiling water reactor samples the solu tion temperature coefficient should be 0 016 pH C The appropriate values for other pure water compositions may be 24 determined by developing temperature vs pH data for the particular sample with STC set at 0 The negative slope of this data becomes the STC value The solution temperature coefficient STC may be changed in the Edit Calibrate menu The Isopotential Point UP is left at 7 0 pH for all conventional pH electrodes Spe cial purpose electrodes with zero potential at values other than 7 0 pH will have this identified in their instruction manuals A dif ferent UP setting will allow proper temper ature compens
70. luorescent alpha numeric Line 1 5 characters 10 mm x 6 4 mm Lines 2 and 3 16 characters each 5 mm x 3 2 mm Enclosure Material Noryl amp 900 thermoplastic Weight 3 5 lbs 6 6kg Keypad 15 tactile feedback keys Setpoints Four individual software controlled setpoints which can be set as a high or low limit Any setpoint can be programmed to operate one of two output relays Measurement Update Rate Each measurement parameter is updated once per second One meter measuring two parameters on each of two sensors will update the four readings once per second Analog Output Signals Output value is proportional to selected measurement signal 0 10 volts isolated 0 025 resolution 600 ohms minimum resistance 4 20 mA isolated 3 91 uA resolution 600 ohms maximum resistance RS 232 C Interface Isolated full duplex interface Selectable baud rate up to 19 200 baud Sensor Patch Cord Length Maximum length is 300 ft 91m Temperature Compensation Automatic reference to 25 C for Resistivity Conductivity pH Percent Rejection and TDS Uncompensated measurement are also available Communications Local Area Network LAN Length 1000 feet 805 m maximum 76 CHAPTER 9 MODEL NUMBERS 9 1 TRANSMITTERS 9 1 1 Blind Part Numb Outputs 771 201 NONE 771 202 NONE 771 204 NONE 771 211 2 4 20 mA 771 212 2 4 20 mA 771 214 2 4 20 mA Voltage 90 130VAC 200 260 24VDG 90 130VAC 200 260 24VDG
71. mbly 10 3 Rear Mounting 10 4 Front Mounting 1 4 DIN 10 5 Pipe Wall Mounting Bracket Dimensions 10 6 Pipe Wall Mounting 10 7 Pipe Wall Mounting 10 8 Nema 4X Rear Cover Dimensions 10 9 Nema 4X Rear Cover Exploded Assembly 10 10 770PC Measurement Circuit Board 10 11 770PC Analog Output Conversion 10 12 770PC Patch Cord Wiring 10 13 Rear Panel 24 Volt Units 10 14 LAN Cables and Terminations 10 15 Smart Sensor Calibrators 10 16 770PC Software Menu Trees Main Menu 10 17 770PC Software Menu Trees Measure Menu 10 18 770PC Software Menu Trees Display Menu 10 19 770PC Software Menu Trees Calibrate Menu 10 20 770PC Software Menu Trees Time Average Menu 10 21 770PC Software Menu Trees Compensation Temp Menu 10 22 770PC Software Menu Trees Range Menu 10 23 770PC Software Menu Trees Control Menu 10 24 770PC Software Menu Trees Communication Menu 10 25 770PC Software Menu Trees Security Menu 10 26 770PC Software Menu Trees Other Menus 79 CHAPTER 10 TECHNICAL ILLUSTRATIONS 10 1 770PC OVERALL DIMENSIONS 7 63 193 8MM 350 IN B8 9MM p pgoooog IET Y T T T YX REAR VIEW 5 75 IN 146MM 80 4 62 IN 17 344 f 770 4 92 IN 125 1 8 9
72. menu Main Enter menu no Or NEXT for list 2 Press 2 to select the Set Measurement Time menu 1 Set Averaging 2 Set Meas Time 3 Press 3 for 60Hz operation 4 for 50Hz operation Set Measure Time 3 60Hz 4 50Hz 5 12 PERCENT REJECTION REVERSE OSMOSIS OR ULTRAFILTRATION Percent rejection is measured in 5 conductivity to determine the ratio of CHAPTER 5 TRANSMITTER OPERATIONS impurities removed from product water to the total impurities in the incoming feedwa ter RO membranes typically remove reject 90 of the dissolved inorganic contaminants in water One 770PC trans mitter must be connected to two conductiv ity sensors to achieve a percent rejection measurement The formula for obtaining Percent Rejec tion is 1 Product Feed X 100 See the schematic diagram below of an RO installation with sensors installed for Percent Rejection IMPORTANT When preparing the system to perform percent CONDUCTIVITY SENSOR CONDUCTIVIY SENSOR B RO MEMBRANE A PRODUCT REJECT Channel A secondary measurement can be rejection rejection measurement the prod uct monitoring sensor must be installed in the channel that will measure percent rejection If the product conductivity sensor is installed in channel A then per cent rejection must be measured 55 in channel A Likewise if the product sensor is installed in channel B then th
73. menu to exit the menus and return to the display NOTE A sensor installation on channel A should now display that sensor information If there is any uncertainty about channel A or B primary or secondary pro gramming see Section 5 02 Dis play Setup 3 4 2 TDS Multiplier The default setting with TDS multiplier set at zero provides conversion based on sodi um chloride at approximately 0 5 ppm per uS cm but is non linear Changing the TDS multiplier results in that number being mul tiplied by the sodium chloride factor For conversion of other materials see table below The Total Dissolved Solids TDS Multiplier Factor can be used to adjust all TDS measurements when either a one point calibration is used with NaCl or for measuring solutions other than NaCl 1 Press menu then press 2 for the cali bration menu Calibrate Menu 1 ChA 2 Ch B 2 For the purpose of this manual press 1 to select channel A 22 A Calib 1 Edit 2 Do 3 Save Clr 3 Press 1 ta e ne NI ipli 1 Cell Con 4 Press 5 to select the TDS Multiplier A TDS M 0000 Enter No XXXX gt 5 Enter the TDS Multiplier from the table below TDS Multipliers normalized to NaCl 1 07865 0 8839 0 8407 0 3480 6 Press enter and the new TDS multiplier value will be displayed on the top line If the displayed multiplier value is correct press enter to verify the correct value and exit If the Multiplier number is incorrect ente
74. mounting screws retain ing the Backplane PCB Carefully remove the PCB from the enclosure and place ona static free surface Carefully remove the fuse from the fuse holder and replace with a new fuse Replace the Backplane PCB insuring that the PCB is right side up the wiring label on the rear of the PCB should be right side readable NOTE Make certain that all six screws are replaced 8 Slide the Measurement PCB back into place from the front of the unit insuring that the board is firmly connected Recon nect the wire assembly from the Display PCB to the Measurement PCB This con nector is keyed to fit in only the proper ori entation Be certain that this CHAPTER 7 SERVICE connector installed covering all connector pins Replace screws to fasten the Display PCB in the enclosure 9 Reconnect the ribbon connector from the Lens Plate to the Display PCB This is not keyed for proper orienta tion NOTE DO NOT TWIST RIBBON CABLE Connect ribbon cable so it will lay flat when unit is reassembled Check to insure that the Lens Plate is not upside down Install screws to fasten the Lens Plate to the unit Replace the snap on bezel 10 Reconnect power and replace the NEMA 4X Rear Cover if used 7 2 770PC SOFTWARE UPGRADE MICROPROCESSOR REPLACEMENT CAUTION THIS UNIT AND ASSOCIATED ELECTRONIC PARTS ARE STATIC SENSITIVE ALL WORK MUST BE DONE AT AN APPROVED STATIC FREE WORKSTATION PERSONN
75. nt mode Main Enter menu no Or NEXT for list 2 For the purpose of this manual channel A will be used for the percent recovery measurement Press 1 for Channel This will select channel A to measure and display the percent recovery measure ment Measurement Mode 1 ChA 2 Ch B 3 Again for this example press 1 for Pri mary CHAPTER 3 SENSOR TYPES amp CALIBRATION Ch A Measurement 1 Prime 2 Second 4 Press 9 for more selections 1 GPM 2 Gals 3 m3 9 Press 6 for Recovery 4 m3 hr 5 Hz 6 Rec 9 6 Press exit menu to exit the menus and the transmitter will begin to display the measurements in Percent Recovery AXXXX Rec BXXXX GPM Channel B may then be programmed as A was above if Channel B is used for Recovery If the transmitter does not dis play the A Primary measurement in the large characters line 1 as above see menu section on programming the display in section 5 02 Display Setup if that is desired 3 7 2 Totalized Flow Totalized flow may be measured in Gallons Gals Cubic Meters or Liters Lits To measure Total Flow enter the measure ment menus 1 Press menu then press 0 to access the measurement mode 29 Main Enter menu no Or NEXT for list 2 For the purpose of this manual channel A will be used for the total flow measure ment Press 1 for Channel A This will select channel A to measure and display the to
76. o Or NEXT for list 2 Press 2 1 Setpnt 2 Relay 3 Analog Output 3 Enter a relay number Which Relay Enter No 1 2 4 From this menu you can enable the relay disable the relay or go to the relay setup menu If Setup is selected go to Step 5 Relay 1 Enable 2 Disab 3 Setup 5 To program the operation of a relay a relay must be enabled and set points must be assigned R 1 Hys 2 State 3 Delay 4 Setpts Hysteresis value press 1 go to step 6 Relay state press 2 go to step 7 Delay time press 3 go to step 8 52 Assign setpoints to this relay press 4 go to step 9 6 Hyster The hysteresis setting will be displayed in the position XX Type new value from 0 to 99 and press enter The new value will be displayed on the top line Press enter again to return to the previous menu R Hyster XX Enter No 7 State Select Normal or Inverted press lt to return to the menu in Step 5 R is 1 Normal 2 Inverted 8 Delay The delay setting will be dis played in the position XX Type in a value from O to 99 seconds and press enter Press enter again to return to the menu in Step 5 R 1 Sp1 3 Sp3 2 Sp2 4 Sp4 9 Setpts Press keys 1 through 4 to toggle the for that setpoint After programming relay hysteresis or delay press enter twice and lt to reach enable menu After programming relay state or setpoints
77. on number 4 can be used to set the analog output to the default setting To assign a signal press 1 and go to step 5 To set the minimum value press 2 and go to step 6 To set the maximum value press 3 and go to step 6 Out 1 Sig 2 Min 3 Max 4 Default 5 Make a selection then press to return to the previous menu CHAPTER 4 OUTPUT OPTIONS Out 1 Sig 2 Min 3 Max 4 Default 6 This menu is used to select the units for the minimum or maximum value This selection is actually a multiplying factor that will be applied to the number entered 1 x1 units multiply value by 1 2 u micro multiply value by 0 000001 3 m milli multiply value by 0 001 4 k kilo multiply value by 1 000 5 M mega multiply value by 1 000 000 Min Units 1 x1 2 u 3 m 4 k 5 M or for maximum selection Max uUnits 1 x1 2 u 3 m 4 k 5 M 7 Enter the minimum value press enter and the number will appear on the middle line in the position XX XX The units selected from the previous menu will appear in position y Press enter again to return to the previous menu Min XX XX y Enter No or for maximum selection enter the desired value Max XX XX y Enter No 4 3 INVERTING THE ANALOG 41 pH Reading Output Current mA _ 20 OUTPUTS The analog outputs can be inverted by set ting the minimum value higher than the maximum value For example pH can be programmed to control an inverted outp
78. on the LAN cable 6 4 REMOTE CONTROL MODE 1 Press menu then press 7 for the communication menu Main Enter menu no Or NEXT for list 2 Press 1 1 Remote Control 2 LAN Setup Info 3 Press 2 Remote Control 1 Disab 2 Enab 4 The address o this unit is dis played on the middle line Enter the address of the unit to be controlled 65 Control Unit xxx Enter No gt 5 Press enter At this point if it is available the unit will connect to the con trolled unit Connect to unit xxx Established After 2 seconds the unit will begin dis playing the measurements of the connect ed unit Now the menu structure can be entered and the parameters can be con figured As a reminder that another unit s menu and measurements are being dis played the unit will always be indicated in line 1 of the display Note If connection is attempt ed to a unit which is not avail able on the LAN the display will read Unit xxx is not Available Note To find the assigned address of a transmitter A Press 7 after getting into the main menu follow steps 1 amp 2 Next press 2 for LAN setup info The assigned address of the unit will be revealed CHAPTER 6 NETWORKING Note To End Session A Enter the menu as described in steps 1 through 3 and select the disable func tion or B Press exit menu 3 times on either unit The unit which is now being operated remotely has the foll
79. or the first calibration solution or at the first calibration point Enter the value of the first calibration point press enter 2 Point Cal 1 Enter 222 6 Press next XXXX Press Next to Measure 7 Set the sensor in the second calibration solution or at the second calibration point The unit will ask for the value of the second solution Enter the number press enter 2 Point Cal 2 Enter 2222 8 Press next the calibration will be per formed XXXX Press Next to Measure 32 9 After performing the calibration new cell constants are computed and will be used for all future measurements The new cell constants will remain valid until the unit is powered down or a system reset is per formed f it is desired to save this data beyond these conditions then in can be saved in the Smart Cell as a user s calibra tion by pressing key 5 from the next dis play Cal Done Press 5 to write to cell Press 5 to write the data to the Smart Cell or any other key to return to the menu shown in step 4 3 9 CHANGING SENSOR CALI BRATION CONSTANTS Sensors have two calibration constants a multiplier and an additive If a Smart Sen sor is used the sensor constants will be read upon initialization Default setting of non Smart Sensors Sensor Type Multiplier Adder Conductivity 0 1 0 Temperature 1 0 0 Flow Frequency 1 0 0 Pressure Volt 1 0 0 pH 1 0 0 Tank Level 1 0 0 Chemical Cel
80. or the 770PC will enter normal measurement mode The 770PC will query the Smart Sen sor s to determine sensor type and cali bration constants If the 770PC is being used for the first time the default units and autoranging functions are used to display the measured data in a suitable manner The 770PC automatically reads the data from the Smart Sensor and displays the measurement A System Reset will clear all user pro gramming and will return the 770PC to fac tory default settings If the 770PC meter does not display the expected measure ments do a System Reset as follows 1 Press menu then press 9 for a system reset Main Enter menu no Or NEXT for list 2 Press 2 1 Measure Reset 2 System Reset 3 Press 1 1 System Reset 2 Return The System Reset is now complete If the measurements do not display as expected see Troubleshooting Section 7 04 1 3 OPERATING MODES Measurement Mode measurements are performed and the display is updated at one second intervals Menu Mode a list of program options or calibration parameters is displayed CHAPTER 1 GETTING STARTED Measurements are not displayed in the menu mode but are transmitted and mea sured All functions e g set points relays data transmission etc are operat ing Use the menu key to enter the menu mode Press exit menu to return to the measurement mode 1 4 DISPLAY Each line of the three line vacu
81. or pins replace the screws to fasten the display PCB the enclosure 6 Reconnect the ribbon connector from the lens plate to the display PCB This connector is not keyed for proper orientation Do not twist ribbon cable Connect the ribbon cable so that it will lay flat when unit is reassembled Check to insure that the lens plate is not upside down Install screws to fasten the lens plate to the unit Replace the snap on bezel CHAPTER 6 NETWORKING 6 6 SETTING THE NETWORK ADDRESS FOR INSTRUMENTS WITH VERSION 2 0 SOFTWARE OR LATER When using the Thornton Local Area Net work each unit is identified by a network address number from 1 to 127 In software versions prior to version 2 0 the address was set via a switch located inside the transmitter Version 2 0 and later software allows the address to be set via the menus The address is stored in non volatile memory and is retained in the event that the instrument is powered down To set or change the network address 1 Press menu Main Enter menu no Or NEXT for list 2 Press 7 for the communications menu 1 Remote Control 2 Set LAN address 3 Press 2 to enter the Set LAN Address menu LAN address XXX Enter No gt The current network address will be dis played in the position XXX To change the address enter a number from 1 127 67 The 77 will display the following mes sage while it checks the network for the availabil
82. ource of temperature compen sation can be from channel making the measurement other channel A manually entered value If the sensor has a temperature sensor RTD installed within the sensor housing then compensate from this channel can be used If the sensor on the other chan nel is a temperature sensor or has an inter nal RTD then compensate from the other channel can be used Manual compensa tion can be entered from the keypad when no temperature remains constant see sec tion 5 05 and 5 06 21 3 4 RESISTIVITY CONDUCTIVITY MEASUREMENTS 3 4 1 TDS Total Dissolved Solids TDS is another useful way to measure and display con ductivity resistivity data TDS is the equiv alent of Sodium Chloride NaCl required to produce the measured resistivity TDS is measured in parts per billion ppb or parts per million ppm For this example the display would show a TDS of 10 ppb or 0 01 ppm where 1 ppm equals 1 milligram per liter 1 Press menu then press 0 for the mea surement menu Main Enter menu no Or NEXT for list 2 Select channel A or B as either channel maybe used for a TDS measurement Press 1 for channel A Measurement Mode 1 ChA 2 Ch B 3 Press 1 Ch A Measurement 1 Prime 2 Second 4 Press 3 to select TDS notice that the asterisk moves to that selection CHAPTER 3 SENSOR TYPES CALIBRATION 2 Con 9 More 1 Res 3 TDS 5 Press exit
83. ow Velocity Flow can also be measured as a velocity in feet second A special calibration constant is used to compute this measurement The constant can be modified in the calibration menu see Section 3 12 1 Press menu Main Enter menu no Or NEXT for list 2 Press 0 for Measure menu Measurement Mode 1 ChA 2 Ch B 3 Press 1 for Channel Ch A Measurement 1 Prime 2 Second 4 Press 1 for primary measurement 1 GPM 3 m 3 2 Gals 9 More 5 Press 9 for more options 4 m 3 hr 5 dGPM 6 Rec 9 More 6 Press 9 again for more options 8 L Min 9 More T Litr 0 Ft s 7 Press 0 to select the flow velocity in feet second CHAPTER 3 SENSOR TYPES amp CALIBRATION 8 Press exit menu 3 8 SENSOR CALIBRATION All sensors conductivity pH etc have two calibration constants that are used to calculate the desired measurement from the sensor s output signal These con stants are referred to as the Multiplier fac tor Span and the Additive factor zero or offset have the meter calibrate the output of a sensor enter the desired read ing and the unit will adjust the sensor con stant s as necessary A calibration can be performed on most measurement types The measurement to be calibrated must be set as the primary signal 1 Press menu then press 2 for the cali bration menu Main Enter menu no Or NEXT for list 2 Selecta channel Calibrate Menu 1 ChA 2 Ch
84. owing display This unit is remote mode xxx When operation is disabled the remote ly operated unit returns to normal opera tion 6 5 CHANGING A TRANSMITTERS ADDRESS FOR INSTRUMENTS WITH SOFTWARE EARLIER THAN VERSION 2 0 1 Shut off the power to the transmitter 2 Remove the front snap on bezel to expose the four screws retaining the lens plate Remove the four retaining screws and carefully lift the lens plate away from the unit CAUTION THE LENS PLATE IS CONNECTED TO THE DISPLAY PCB BY A RIBBON CABLE WHICH MUST BE CAREFULLY DIS CONNECTED 66 3 Remove the four screws which retain the display PCB to the enclosure Carefully remove the display PCB from the unit CAUTION THE DISPLAY PCB IS CONNECTED TO THE MEASUREMENT PCB BY A WIRE ASSENBLY AND A CONNECTOR WHICH MUST BE CAREFULLY DIS CONNECTED 4 Pull out the measurement PCB from the right side of the enclosure Locate the 8 position dip switch which is used to set the LAN address for this transmitter When setting the address of the transmitter make sure no other transmitter on the LAN has that same number Refer to table 1 for the switch positions 5 Slide the measurement PCB back into place ensuring that the board is firmly connected Reconnect the wire assembly from the display PCB to the measurement PCB This connector is keyed to fit in only the proper orienta tion Be certain that this connector is installed covering all connect
85. ping or averaging 4 comp temp For selection of compensation parameters or temperature source 5 range For selection of a specific range CHAPTER 1 GETTING STARTED 5 range For selection of a specific range or autoranging 6 control For changing setpoint values 7 communc For obtaining network LAN information and accessing the remote control features 8 security For enabling disabling the menu lockout feature and changing the password 9 other For measurement or system reset 1 7 HELPFUL HINTS 1 Analog option two 4 20mA outputs or two 0 10 volt outputs The user must assign the desired parameters to the out put signals See Section 4 0 Output Options 2 Transmitters can be connected together to form a network system see Section 6 0 Networking 3 Relays and Setpoints two relays and four setpoints are available The user must assign the desired parameters see Sec tion 5 0 770PC Transmitter Operations 4 Transmitters have two sensor inputs Two sensors may be connected to the unit These may be either Thornton Smart Sen sor or any other sensor whose output is 13 compatible with one of the meter s operat ing modes Please contact Thornton Asso ciates for more information 5 When a menu reads enter the enter key must be pressed a second time to leave that menu 6 Pressing exit menu will always return to measurement operations 7 Remote Control Mode is availabl
86. ponse time to a change in the measure ment Averaging can be set to None medium high or Special To change the level of averaging CHAPTER 5 TRANSMITTER OPERATIONS 1 Press Menu Main Enter menu no Or NEXT for list 2 Press 3 for the Time Avg Menu 1 Set Averaging 2 Set Meas Time 3 Press 1 to select the Set Averaging menu Set Average 1 2 As 3 Bp 4 Bs 4 Press 1 2 3 or 410 select mea surement For example press 1 to set averaging for the measurement Ap Ap 1 No 2 3 Hi 4 Special Press keys 1 2 3 or 4 to select the desired level of averaging the Special Averaging is a unique method that pro vides a high level of averaging for measurement changes less than 1 If the measurements are changing more than this amount then the averaging is automat ically switched to a lower level to provide faster response to major changes Note If measurement noise can exceed 1 then the Special Averaging should not be used 54 5 11 MEASUREMENT TIMING 50 60 HZ OPERATION The 770PC measurement program can reduce filter the effects of power line noise that is common in many environ ments The input power to the 770PC is either 50Hz or 60Hz By selecting the proper frequency from the menus the effect of the power line noise will be reduced To set the frequency of the power source also referred to as the measure ment time 1 Press menu then press 0 for the mea surement
87. r a new number and press enter twice A TDS M XXXX Enter No gt 7 Press exit menu to return to the mea surement mode CHAPTER 3 SENSOR 5 CALIBRATION 3 5 MEASUREMENTS 3 5 1 Calibration Due to aging in the process pH Smart Sensors require recalibration after a peri od of time The stability of the sensor depends entirely on the nature of the sam ple solution pressure temperature etc For this reason calibration intervals should be based on experience with the particular application When measuring solution not previously measured it is advisable to recalibrate fre quently If no significant variation is found the calibration interval may be increased Materials and Equipment Needed for Calibration For proper calibration two buffer solutions of adequate accuracy and pH range are necessary Each buffer solution should be poured into a small beaker to approximate ly 1 depth to immerse the electrode tip One buffer solution is usually at or near 7 pH The buffer solutions should cover the anticipated measurement range For example if the measurements are expect ed to be done in acid media the second buffer should have a pH value of 4 0 If the media is expected to be alkaline the sec ond buffer should have a pH value of 9 or 10 The difference between the two cali bration buffers should be at least 2 0 pH 23 Calibration Procedure Select the two point calibration option
88. r patch cord see Section 9 0 How to Order for each sensor input Cables provide an interface between the eight pin AMP Smart Sensors connector and the transmitters terminal strip LAN analog outputs relay contacts and power input connections must be installed as illustrated below NOTE A microprocessor reset switch may be installed on the transmitter To add a micro processor reset switch install a momentary switch between the RESET position and Sensor or B Analog Ground AG position on the rear terminal strip as shown below 16 WARNING MISWIRING PATCH CORDS MAY DAMAGE SENSORS AND WILL VOID ALL WAR RANTIES ALL WIRES MUST BE CONNECTED EACH SENSOR PATCH CORD WIRE IS NUM BERED TO MATCH A NUMBER ON THE REAR LABEL TO VERI FY WIRE COLOR AND NUMBER CHECK TABLE BELOW NOTE For CE rated models 772 209 and 772 219 see manual sup plement 84350 CHAPTER 2 TRANSMITTER INSTALLATION Network Analog Outputs Sensor Lead Wiring Relays amp Power Wiring RESET LAN Analog Outputs Relay Contacts Network Analog Outputs Sensor Lead Wiring Relays amp Power Wiring RESET LAN N k LAN etwor Analog Outputs Relay Contacts Rear Panel Wiring Sequence 24VDC Units For CE rated models 772 209 and 772 219 see manual supplement 84350 Patch Cord Color Code 1 Blue 3 White 5 Green 7 Pink 2 Yellow 4 Orange Clear 6 Black 8 Brown 17 18 CHAPTER 3 SENSOR TYPES amp
89. rogrammed for Full Gallons or Liters as selected press 1 Calibrate Menu 1 Ch A 2 Ch B 7 To input the tank size constants press 1 A 1 Edit Calibrate 2 Do 3 Save Clr 8 Press 4 Edit 1 Cell Con 4 Tank Constants 9 If a Smart Sensor is installed DO NOT input maximum psi go on to Step 11 Press 1 to input maximum psi if the sensor is not smart A Tank 1 MaxPSI 2 Height 3 Area 10 Enter the maximum psi of the pressure sensor lf an error is made press to clear the entry Press enter A Max PSI 0000 Enter No XXXX The new maximum will now appear in the display If the correct maximum psi appears enter the correct amount Once the correct number appears in the display press enter A Max PSIz XXXX Enter No gt 11 Press 2 CHAPTER 3 SENSOR TYPES amp CALIBRATION A Tank 1 PSI 2 Height 3 Area 12 Enter the internal tank height in feet If an error is made press to clear the entry Once the correct data is entered press enter A Height 0000 Enter Ft gt XXXX The new tank height will appear in the dis play If the incorrect tank height appears enter the correct amount Once the correct number appears in the display press enter A Height XXXX Enter Ft gt 13 Press 3 A Tank 1 Max PSI 2 Height 3 Area 14 Enter internal tank area in square feet If an error is made press lt to clear the entry Once the correct data is entered press en
90. rough or specific items can be selected Try pressing various keys to see how the menu mode works When finished using the menu press exit menus to exit A tree diagram of the menu structure is located in the back of this manual Press menu then press next to cycle through all of the top level menu options To back up press lt Use exit menus to exit the menu mode A complete list of all options is located in the Menu Options sec tion of this manual The top level options for getting started are listed below NOTE If you are entering data the enter key must be pressed twice to return to menu mode Press menu Main Enter menu no Or NEXT for list Any of the top level menus can be entered by pressing a numerical key from 0 to 9 Pressing next will list the first two options 12 Main 0 Measure Menu 1 Display Menu Current Settings are indicated by an asterisk preceding the menu number For example the menu for setting the range of a resistivity measurement may appear as 1 Auto 2 Mo cm 3 Ko cm 4 o cm The preceding the selection 2 Mo cm shows that the meter is set to display resis tivity in Mo cm units Pressing 3 would cause the to move to 3 Ko cm 1 6 1 Top Level Options 0 measure For measurement selection 1 display For display formatting 2 calibrate Begins a calibration sequence 3 time averaging is used to set the amount of measurement dam
91. stalling the 24V Module to the 770PC 34 3 12 2 Attaching a Pateh Gord to the 24 Volt Supply 35 TABLE OF CONTENTS CHAPTER 4 OUTPUT OPTIONS 4 1 Analog Output Set Up 4 2 Analog Outputs 4 3 Inverting the Analog Outputs ___________________________________ 4 4 Output Hold Feature _ CHAPTER 5 770 TRANSMITTER 5 5 1 Measurement Type Selection _________________________________ 5 2 Display Setup 5 3 Display Format _____ oho sere use ne 5 4 Range Selection _________________________________________________ 5 5 Compensating Measurements _________________________________ 5 6 Temperature Source _______________________________ oit cr eL eec 5 ae A oe 5 7 1 USP Setpoint 5 9 Relays i l ea a a decies 5 9 System Reset _______________________________________________ S Ost DIRE 5 10 Measurement Averaging _______________________________________ 5 11 Measurement Timing 50 60 Hz Operation _____________________ 5 12 Percent Rejection Reverse Osmosis or Ultrafiltration 5 13 Security Password Lockout Menus
92. tal flow measurement Measurement Mode 1 Ch A 2 Ch B 3 Again for this example Press 1 for Pri mary Ch A Measurement 1 Prime 2 Second 4 Press 2 for Totalized Flow in Gallons press 3 for Cubic Meters or 9 to view more selections The asterisk will change loca tion to identify the desired selection 1 GPM 2 Gals 3 m 3 9 More 5 If 9 is pressed a new list of selections will be displayed Press 9 a second time to get the third list of measurements 4 m3 hr 5 dGPM 6 Rec 9 More 6 Press 7 for Total Liters See the 770PC manual for other measurements 8 L min 9 More 7 Litr 0 Ft S 7 Press exit menu to return to the mea surement mode CHAPTER 3 SENSOR TYPES CALIBRATION 3 7 3 Flow Rate Flow rate can be measured as Gallons per minute GPM cubic meters hour m3 hr or Liters per minute L min 1 Press menu Main Enter menu no Or NEXT for list 2 Press 0 for Measure menu Measurement Mode 1 2 Ch B 3 Press 1 for Channel Ch A Measurement 1 Prime 2 Second 4 Press 1 for primary measurement 1 GPM 2 Gals 3 m 3 9 More 5 Press 1 to select Gallons per minute or 9 for more options Note that the asterisk indicates the selection of number 1 5 dGPM 9 More 4 m 3 hr 6 Rec 6 Press 4 for cubic meters hour or press 9 for more options 8 L min 9 More 7 Litr 0 Ft s 7 Press 8 for Liters per minute 8 Press exit menu 30 3 7 4 Fl
93. ter A Area 0000 Enter Ft gt XXXX The new tank area will now appear in the display If the incorrect tank area appears enter the correct amount A Area XXXX Enter Ft gt 15 Once the correct number appears in the display press enter 27 A Tank 1 PSI 2 Height 3 Area 16 Once the tank area data is pro grammed into the 770PC the tank level full calibration is complete Press exit menu to leave the menus and return to dis play mode Full a XXXX Gals 3 7 FLOW MEASUREMENTS The 354 and 355 Series Flow Sensors generate an AC signal the frequency of which is proportional to the flow rate Each Smart Sensor NVRAM stores the sensor type and calibration constants of that spe cific sensor Each Smart Sensor for Flow is calibrated at the factory and that information is stored the NVRAM circuitry of the sensor In some instances calibration of flow sensors is required for specific piping installations When this is necessary the factory calibra tion may be overridden with a new calibra tion and stored permanently in the sensor circuitry Sensors are powered by the 770PC Mea surements may be displayed or transmitted as a flow rate or as totalized flow at the users discretion see Section 5 01 Mea sure Menu CHAPTER 3 SENSOR TYPES CALIBRATION 3 7 1 Percent Recovery Reverse Osmosis Percent Recovery is the flow ratio of pure water output to feedwater input
94. terials or workmanship for one year from start up or 18 months from the date of shipment from Thornton whichever is sooner Warranties do not apply to limited life components such as batteries Some non Thornton manufactured resale items may have shorter war ranties than one year Thornton honors only the warranty period of the original manu facturer Catalog descriptions although accurate should not be taken as a guarantee or warranty Thornton s obligation under the warranty shall be to repair at its facility or replace any products which Thornton finds to be defective Items returned for warranty must be properly packaged shipped prepaid and insured and must be accompanied by the Return Authorization Number described below Returned Goods Please contact us for a Return Authorization Number before any item is returned Items returned for credit or exchange must be in salable condition Items returned after 30 days from date of invoice will be subject to a 10 rehandling charge Note Substitution or modification of cables voids all warranties THE ABOVE WARRANTY IS THE ONLY WARRANTY MADE BY THORNTON ASSO CIATES INC AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MER CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 106 thornton Thornton Associates Inc 1432 Main Street Waltham MA 02154 1652 Phone 781 890 3399 Smartline 800 642 4418 FAXLINE 781 890 55
95. the Membrane Switch Cable lays flat and ensure that it does not become twisted during assembly Be certain that this connector is installed covering all the connector pins Install the Lens Membrane Switch panel on the 770PC unit using the four existing screws Be certain the o ring is in position and seals the case when assembled 14 Replace the snap on Bezel Assem bly is now complete 15 Return power to the 770PC meter 16 system reset is required prior to operation Press menu press 9 other menus press 2 system reset press 1 system reset press exit menu CHAPTER 7 SERVICE 7 3 RECOMMENDED SPARE PARTS LIST Description Qiy Part Fuse 115 230 unit 1 35082 2AG 1 4 Amp Littlefuse amp 225 250 Fuse 24VDC unit 1 35084 2AG 3 4 Amp Littlefuse amp 229 750 Display PCB 1 07284 Measurement 1 07287 LAN PCB Backplane PCB 1 07286 Front Lens Plate 1 27196 O ring Membrane Switch 1 82720 Rear Label 1 82737 Screws Lens Plate 4 21150 7 4 ACCESSORIES Description Qty 1 Sensor Patch Cord 1 1000 53 Network Y Cable 1 1000 54 Network Termination Set 2 1 1000 55 Simulator Resistivity 18MQ 1 1850 Pipe Wall Bracket 1 15540 7 5 OPTIONAL OUTPUT PRINTED CIRCUIT BOARDS Description Qty Analog Output 0 10V 4 20mA 1 07288 7 6 NEMA 4X REAR COVER Description Rear Cover NEMA 4X ASSY Individual Components Nema 4X Rear Cover Rear Cover O Rin
96. this number the analog output will be set to its maximum value Default settings 1 Assigned signal none output is dis abled 2 Minimum Value depends upon assigned measurement as follows Resistivity 0 ohms cm Conductivity 0 S cm TDS 0 ppm Degrees 40 DegreesF 40 0 pH Volts 1 5 volts Flow Rate 0 gallons minute Total Flow 0 gallons Pressure 0 PSI Tank full 0 Tank Level 0 gallons Rejection 0 CHAPTER 4 OUTPUT OPTIONS Recovery 0 0 NaOH 0 2504 0 Cubic Meters Hr 0 Liters 0 Liter min 0 Feet Second 0 3 Maximum Value depends upon assigned measurement as follows Resistivity 50 ohms cm Conductivity 100 S cm TDS 62 500 ppm Degrees 140 Deg Degrees F 284 Deg F pH 14 pH Volts 1 5 volts Flow Rate 1 000 gallons minute Total Flow 999 gallons Pressure max PSI of sensor Tank full 100 Tank Level 999 gallons Rejection 0100 Recovery 100 HCl 100 NaOH 100 9eHoSO4 100 Cubic Meters Hour 45 42 m 3 hr Liters 999 M Liters Liter min 1 000 Lit min Feet Second 1 000 feet second Any default amount can be manually over ridden 40 To change the setting 1 Press menu then press 6 for the con trol menu Main Enter menu no Or NEXT for list 2 Press 3 1 Setpnt 2 Relay 3 Analog Output 3 Enter an analog output number Analog Output Enter No 1 2 _ _ 4 With this menu selecti
97. to enter a new password Lockout 1 Enab 2 Disab 3 Chang CAUTION FOR SECURITY PUR POSES KEEP THE UNIQUE USER PASSWORD CONFIDEN TIAL THE NEW USER INSTALLED PASSWORD MUST BE ENABLED TO ACTIVATE THE LOCKOUT Lockout 1 Enab 2 Disab 3 Chang 5 To enable the Password Lockout Press 1 Enter Password to Lock gt 6 Enter the 5 digit password 57 Enter Password to Lock XXXXX gt The password will be displayed as for security purposes Press enter to lock the menus Menus are Locked Press EXIT Menu NOTE If the incorrect password has been entered the menu will return to step 4 above 7 Press exit menu to return to the mea surement mode 8 Check to insure that the Password Lock out is activated Press 4 Lockout Enabled Password 9 Press exit menu to return to the mea surement mode 5 13 1 Password Lockout Access 1 Anyone pressing the menu key for access when the Password Lockout is Enabled will see the following message Lockout Enabled Password gt 2 Access to the menus will not be allowed without a password To access the menus a password must be entered at this time CHAPTER 5 TRANSMITTER OPERATIONS Lockout Enabled Password XXXXX gt 3 Enter the password and Press enter Main Enter menu no Or NEXT for list Access to the menus is now permitted 5 14 SMART AUTOMATIC TRANSMITTER CALIBRATION Smart Automatic Calibrat
98. um fluo rescent display can be programmed to display any of four measurements The top line contains five characters and will display only the numerical measurement Its purpose is to allow the viewing of data at a distance The second and third lines each contain 16 alphanumeric characters which display the measurement type the measurement value units and compensa tion state if applicable In the measurement mode the measure ment is indicated by one character Channel Explanation A channel A primary a channel secondary B channel B primary b channel B secondary Capital letters A amp B indicate Primary measurement channels for A amp B Lower case letters amp b indicate Sec ondary measurements for channels A amp B When the power and sensor connections are properly installed the sensors will identify themselves by sensor type and measurement data to the transmitter which translates the information into the display format The Measurement Mode is automatically activated upon start up Each line of the display can be pro grammed to display a fixed number of dig its after the decimal place This feature is useful when a reading is fluctuating and it is desired to display only the significant digits see section 5 03 A Typical Display 18 18 A 18 18 Mo cm C B 59 2 PSI The top line of the display shows a resis tivity reading of 18 18 Mohm cm
99. ut by setting the minimum 14 and maximum 0 Table 4 1 shows the output current for various pH values with this setup Table 4 1 4 4 OUTPUT HOLD FEATURE Under some circumstances it may be desirable to hold the relay states and ana log output values at their current levels This is frequently used when installing a new sensor and during cleaning or calibra tion of pH and ORP sensors The display continues to give current mea sured values while the outputs are held The 770PC can be programmed to hold the outputs for a specified amount of time The timer can be set from 1 minute up to 99 minutes After the time has expired the outputs will return to normal operating con ditions CHAPTER 4 OUTPUT OPTIONS Hold To enable the hold feature set the timer as A 18 15 M0 cm C follows B 52 83 PSI 1 Press Menu MAIN Enter menu no Or next for list 2 Press 6 for the Control Menu 1 Setpnt 2 Relay 3 Analog 4 Hold Also while the hold feature is enabled a time remaining message will be displayed every minute An example of this message 3 Press 4 to access Hold Timer Menu ia 2 Hold Outputs 00 Outputs are held Enter Min gt i for 13 more min Enter the desired number of minutes to hold the outputs Press the ENTER key The time will then appear on the top line For example setting the timer to 15 min utes will be shown as Hold Outputs 15 Enter Min gt Press Exit Menu when done I

INSTRUCTION MANUAL 770PC PROCESS CONTROLLER

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