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770MAX Multiparameter Analyzer/Transmitter

1. power industry may want to monitor condensate Measurements are normally in the range of 0 1 uS cm but during a condenser leak a range of up to 10 uS cm is desirable Settings for the low mid and high values might be 0 1 and 11 uS cm to give convenient plotting on a 10 division strip chart Auto Range scaling provides two ranges of output and allows a control relay or discrete output to be activated It is designed to work with a PLC or two points of a multipoint strip chart recorder to meet the same needs as bi linear scaling above Two separate settings are used one for the high limit of the high range and one for the high limit of the low range for the single 0 4 20 mA signal The low value is always zero Auto range scaling also allows activation of a relay while on the high range for a logic signal or for actual switching of the signal through double throw contacts At the cross over point a 2 hysteresis prevents jumping back and forth between ranges For the power industry example above with rising conductivity the 0 4 20 mA signal would go from 0 100 for 0 1 uS cm jump to 10 and activate the relay when just above 1 uS cm then go 10 100 for 1 10 uS cm Thus both 0 1 and 0 10 uS cm ranges may be recorded on the same chart using a single signal Logarithmic scaling provides an output for use with logarithmic chart paper A high value and the number of decades must be entered The low value is defined by the 16 U
2. 32 Meter Cal EE re 32 CHAPTER 7 MAINTENANCE 8 TROUBLESHOOTING uusuuuuuunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnn 33 Maintenance siria al 33 Troubleshooting LAOS a a E E 33 pH Sensor Diagnostics AAA 34 Diagnostic MeN EE 34 CHAPTER 8 ACCESSORIES AND SPARE PARTS wsistssesnctcesntrninedsnnstsatioraiimtntnantndsducigehiiwasiaaeenaiendiscahinabe 36 APPENDIX A SETUP PARAMETERS eridhe annainn danava aniani a 38 APPENDIX B PULSE FLOW INPUT SETUP at 39 WIING Seen ee EE 39 Pulse Flow Input ACCOSSGIeS as 45 Calibration Constants for Pulse Input Flow Gensors 46 SPECIFICATIONS ciorisanataa ira 48 770MAX MOISES Ad 49 RATINGS een 50 WARRANTY EE 51 CHAPTER 1 INTRODUCTION This manual covers routine operation of the 770MAX For service communications unusual applications etc see Service Manual Part No 84373 The 770MAX is a Multiparameter Analyzer Transmitter for high accuracy measurement and control It accepts inputs from up to four Smart Sensors plus two additional pulse flow sensors Smart Sensor parameters include Resistivity with temperature 2 or 4 electrode conductivity with temperature e pH with temperature e ORP Dissolved oxygen Dissolved ozone e TOC Flow Temperature Pressure Level In addition derived measurements are available including e total dissolved solids e concentration of HCI H2SO4 NaOH rejection totalized flow e recov
3. 44 Pulse Flow Input Setup Appendix B Pulse Flow Input Accessories 2 130 9 3 30 ACCEPTS fa SCREW AND NUT Gi 716 45 2 54 9 ACER Ibl 2000 023 NOTES 1 DIBENSIGAS IM ASRERNHESIS RE MILLIMETERS 1000 65 power supply dimensions t ER CIR cao 25 T G t NOTES i Si F 1000 67 flow input kit dimensions 1 OMENSIONS IN PARENTHESIS ARC MILLIMEIERS Appendix B Pulse Flow Input Setup 45 CALIBRATION CONSTANTS FOR PULSE INPUT FLOW SENSORS Forward Swept Non Magnetic Impeller Data Industrial Sensor Flow Constants Enter these Multiplier and Adder constants into the 770MAX Measurements menu for channel 5 and or 6 Multiplier Adder Pulses gal GPM 422 2 0 1204 182 54 0 0710 145 28 0 1444 104 62 0 1513 97 82 0 1120 35 31 0 3160 22 018 1 0682 7 221 1 8861 3 909 3 8068 EE ESA IA EEN 100 22 0 0005 97 879 0 1633 95 755 0 0197 28 807 0 6738 15 244 0 7203 10 836 3 2868 5 8224 7 4608 33173 228PR6 6 wWeldtee PVDF 3 2538 4 5861 For Data Industrial sensor models not listed above consult the flow sensor installation manual available at www dataindustrial com Convert the K factor for the sensor in units of GPM Hz to a Multiplier in units of pulses gallon by dividing 60 by the K value Enter the result as the Multiplier in the 770MAX Measurements menu For example if the K factor is 2 the Multiplier would be 60 2 30 Convert the flow sensor
4. DESCRIPTION Shown below are the 770MAX case dimensions 100 7 114 3 ran 3 97 gt 4 50 168 6 32 UNF THREAD X 30 DEEP 45 3 117 1 be Seen 4 PLACES rear dimensions mm inches 106 4 4 19 SS side dimensions mm inches 2 Installing the 770MAX Chapter 2 Front Panel Display The display has four lines of 20 characters each either backlit LCD or optional vacuum fluorescent display Custom six character names may be given to each measurement in place of Chan 1 Chan 2 etc Keypad The keypad consists of 9 function keys and 11 alphanumeric entry keys See Chapter 3 Getting Started for detailed descriptions of each key 114 3mm 4 50 a N THORNTON 770MAX o gt a S E E 125 0mm ABC DEF GHI Iw ES JKL MNO POR Page 4 5 6 Up STU ee Yz Page S 7 8 9 Down ree e Y A A 770MAX FRONT PANEL MEMBRANE front panel Rear Panel All electrical relay input output and communication connections are made via the rear panel of the 770MAX The options available are dependent on the 770MAX model purchased See CONNECTIONS later in this section Chapter 2 INSTRUMENT INSTALLATION The 770MAX can be mounted in a panel on a pipe or wall A rear cover is available if required see Chapter 8 Accessories and Spare Parts CAU
5. Pipe Mount To mount the 770MAX on a 2 pipe use the accessory pipe mounting bracket Part No 15540 ordered separately pipe mount Wall Mount and Rear Cover Accessory Kit 1000 69 ordered separately provides sealing of the rear of the 770MAX It includes provision for wall mounting See assembly instructions supplied with that kit CONNECTIONS All connections are made via the rear panel Standard outputs on TB2 and TB3 on all models include 4 analog outputs RS232 2 discrete outputs plus 2 discrete inputs Additional terminal blocks depend on the 770MAX model purchased Model 775 _ _0 standard outputs Model 775 _ _1 standard outputs plus 4 relays on TB5 TB6 Model 775 _ _2 standard outputs 4 additional analog outputs on TB4 and 4 relays on TB5 amp TB6 WARNING MAKE SURE POWER TO ALL WIRES IS TURNED OFF BEFORE PROCEEDING WITH THE INSTALLATION HIGH VOLTAGE MAY BE PRESENT ON THE INPUT POWER WIRES AND RELAY WIRES 4 Installing the 770MAX A SN er oO TRO rear panel terminal boards Pi O AZ Acceptable wire sizes for 770MAX terminals are from 22 AWG 0 326 mm to 14 AWG 2 08 mm for all connections except relays For TB5 and TB6 relay terminals use 26 AWG 0 126 mm to 14 AWG 2 08 mm If more than one wire must be connected to a terminal wire size must be further limited Input Power 770MAX models 775 _A_ have an AC power supply for op
6. flow Chapter 6 If an accurate flowmeter is not available for comparison determine a standard flow rate by measuring the amount of time for a known tank level change and computing the volume change per unit time Pressure Although calibration is seldom required a simple 1 point zero calibration is easily performed If a second point of calibration is needed use an accurate traceable pressure instrument as the standard Tank Level A two point calibration after installation is generally recommended to accommodate the unique sensor location Calibrate at zero and some measurable high level Level measurements are linear for straight sided tanks only Dissolved Oxygen Only a one point air calibration is normally performed at startup and periodically thereafter Automatic correction for temperature and barometric pressure is provided Although not normally required a one point calibration of the barometric pressure measurement may be performed if pressure is set up aS a measurement A one point zero dissolved oxygen calibration is available but not normally recommended since zero DO is very hard to achieve and sensor electrical zero is very close to theoretical Dissolved Oxygen Electrical Zero Calibration For model 357 210 High Performance DO Sensor only it is possible to recalibrate for the electrical zero offset of the preamplifier This is recommended when operation is near zero and it is suspected the calibration has sh
7. on the power wires to meet CE requirements for all 770MAX 775 xxx models Pass the power wires through the ferrite suppressor module and loop it through one more time before connecting the transmitter to the power source see figure 1 Place ferrite as close to the 770MAX instrument as possible Smart Sensor Connections Use the four modular jacks labeled CH 1 through CH 4 on the rear panel for connecting Smart Sensors compatible with the 770MAX Patch cords are available up to 300 feet 91 m in length however pressure and level sensors are limited to 150 feet 46 m and four electrode conductivity sensors are limited to 50 feet 15 2 m See Chapter 8 Accessories If pulling patch cords through conduit protect the modular connector latch from breakage by covering with tape as needed To connect most Smart Sensors Chapter 2 1 Connect large connector of 1XXX 79 patch cord to sensor 2 Plug other end into the desired channel jack To connect Ozone Smart Sensors in Europe to meet CE electromagnetic compatibility requirements use series 1XXX 70 patch cord with additional loose conductor wire emerging from each end 1 Connect large connector of patch cord to ozone preamp 2 Connect loose conductor wire to external screw terminal on ozone preamp 3 Plug other end into the desired channel jack of the 770MAX Connect the loose conductor wire to earth ground The 770MAX earth ground terminal may be used if space a
8. second calibration solution or establish conditions for the second calibration point The current reading will be displayed Press Page Down The current reading will be displayed 10 Enter the value of the second calibration standard point including units multiplier if necessary 11 Press Page Down to begin calibration 12 After calibration is complete the measurement values before and after calibration are displayed 13 Enter the date as month day year mm dd yy then press Page Down to save 14 Select Yes to save the calibration data in the Smart Sensor memory NOTE Steps 13 and 14 must be completed answering yes to save calibration data permanently otherwise Calibrating and Verifying 31 the calibration data will be lost on power down or on disconnecting the patch cord 15 If the hold function was used reset it to zero to resume normal operation of analog outputs and relays After calibration the 770MAX will return to the display mode and the new calibration constants will be used for all measurements using that sensor pH Grab Sample or Comparison Calibration Procedure This method should only be used when the pH is stable To perform a grab sample calibration NOTE For pure water samples lt 20 uS cm conductivity the grab sample should be a flowing side stream not exposed to air before the measurement to minimize contamination 1 Take a grab sample from the process stream 2 R
9. up the measurement for the conductivity sensor installed in the product line IMPORTANT Use the same units and temperature compensation type for both measurements 3 Setup a third measurement to display the rejection a Select a new measurement letter b Select the sensor input channel to which the feed line conductivity sensor is connected c Select units of Rej d Select the sensor input channel to which the product line conductivity sensor is connected e Complete the remaining menu options as desired 4 Press Menus twice to return to display mode All three measurements will be displayed feed line conductivity product line conductivity and rejection Recovery Percent Recovery is the flow ratio of pure water output to feedwater input through a membrane process Flow sensors are installed in the product and reject sides of the membrane The formula for obtaining Percent Recovery is Chapter 5 Product Product Reject x 100 Recovery The figure below shows a diagram of an installation with sensors installed for percent recovery FLOW RO MEMBRANE SENSOR FEED PRODUCT FLOW SENSOR REJECT recovery diagram To set up the recovery measurement 1 Setup the measurement for the flow sensor installed in the product side 2 Set up the measurement for the flow sensor installed in the reject side IMPORTANT Use the measurements same units for both
10. 00TOC Sensor manual 84445 for details regarding error conditions Status Displays the elapsed time hours minutes seconds since this setpoint was activated RELAYS Relays can be programmed to activate when a setpoint is exceeded see SETPOINTS above Delay times and hysteresis values can be entered to fine tune the use of relays The relays available depend on the 770MAX model purchased See Chapter 2 Installing the 770MAX for connection information If relays are not available on your instrument an error message will be displayed when this menu is accessed Relay Use the up down arrow keys to select the desired relay 1 through 4 then press Enter to continue with setup for that relay Complete all setup for one relay before starting another To set up the next relay press Page Up until you return to this screen and then select another relay number Delay A time delay requires the setpoint to be exceeded continuously for a specified length of time before activating the relay Enter the delay time in seconds If the condition disappears before the delay period is over the relay will not be activated Hysteresis A hysteresis value requires the measurement to return within the setpoint value by a specified percentage before the relay is deactivated For a high setpoint the measurement must decrease more than the indicated percentage below the setpoint value 18 Using Menus before the relay is deactiva
11. 26 33904 107 76 33905 65 44 gt 3 y 1 1 4 1 1 2 2 1 2 33906 38 61 e 33907 SE 17 79 par Ke 33908 11 80 33909 e 6 43 PVDF Fitting TU Socket Fusion 33911 448 14 33912 295 27 33913 215 86 33914 119 80 33915 71 80 33916 41 11 316 Stainless Steel Fittings FNPT 33921 400 07 33922 251 63 a ve 2 N 2 1 2 PM P N ajo al o 30m 20 dera 392 25 295 27 393 32 215 86 394 so tioso 83915 50 7180 IST 65 o wo 2 1 2 33923 1 185 58 33924 120 44 33925 75 09 33926 43 00 316 Stainless Steel Fittings TriClamp 33931 415 97 E 33932 242 32 33933 117 07 33934 WEA 73 73 33935 42 32 Appendix B Pulse Flow Input Setup 47 SPECIFICATIONS Functional Sensor inputs Cond Resist Ranges pH 8 ORP Ranges Temperature Range Flow Range Pressure Range Tank Level Volume Range Dissolved Oxygen Range Dissolved Ozone Range TOC Range Derived Measurements Temperature Compensation Pressure Compensation Discrete Inputs Outputs Setpoints Alarms Relays Discrete Outputs Analog Output Signals Serial Output Performance Resistance accuracy Temp accuracy Voltage accuracy Frequency Repeatability 48 4 Smart Sensor channels 2 pulse flow channels 0 01 Constant 2 E Cell 0 001 uS cm to 2000 uS cm 0 5 kQ cm to 1000 MQ cm 0 01 uS cm to 3000 uS cm 0 33 kQ cm to 100 MQ c
12. 3 Setup a third measurement to display the recovery a Select anew measurement letter b Select the sensor input channel to which the product side flow sensor is connected c Select units of Rec d Select the sensor input channel to which the reject side flow sensor is connected e Complete the remaining menu options as desired 4 Press Menus twice to return to display mode All three measurements will be displayed product flow reject flow and recovery Deionization Capacity DI Cap Total ppm gallons or grains The 770MAX can monitor the flow rate and mineral concentration entering a deionization bed and infer the extent of resin capacity consumption By multiplying ppm total dissolved solids TDS based on conductivity times flow rate in gallons and integrating the result over time total ppm gallons or grains of minerals that have entered the bed can be monitored The 770MAX can accomplish this automatically by setting measurement units to ppm gallons or grains From this and knowledge of the total capacity of the bed the of run and or anticipated time for next regeneration can be determined This measurement requires installation of a flow sensor and a conductivity sensor To set up a deionization capacity measurement 1 Setup the measurement for the flow sensor Chapter 5 2 Setup the measurement for the conductivity sensor 3 Setup a third measurement for deionization capacity a Selec
13. A een 18 Discrete AAA O TO 18 EE 18 SOC NA AA AA A A 19 o a 19 RS232 SetU P ae ee 19 e 20 TEE 20 Tech Support espacial 20 Set Hold N Dir 20 EELER 20 Sel UE 20 Software Hey 20 View Total POWER AAA A A A terest tone 20 PENES ONU MON EE 20 MULAS O a AAA A ee 20 DEVLIN NAMI EEN 21 ee e E 21 OIC OM ne east 21 CHAPTER 5 MAKING MEASUREMENTS ciiocicocicni cinicciananinacincnicnciconia nadia iia adan 22 IS 22 Displaying Measurement ENEE 22 SENSOF amp ONSIANIS Airc Dan tan het Re ah tant E 22 Temperature ele E 22 Een le EE 22 Temperature Gompensation u nn nennen aa LI anne 23 Dissolved Oxygen ee ee een ee tacked ad ceed aati diac 23 ISSO Zone ee 23 OO ee A Mme INTE Y 7 24 elle BEE 24 EE eege eege EE 24 Isopotenta h Ront ee ee cc ee NEE NH ee 24 Solution Temperature Coefficient 44404400snnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 24 eege 25 POS Ut A li at 25 ele EE 25 OPD AR 25 Eat EE 25 Derived Meal MENS visit ee 26 Te 26 Ee 26 Rejection VE 26 SEENEN ia a a a a Ud osc A E a a a e FE 26 Deionization Capacity grains Dm 27 Watts or Volt Amps VA ee 27 Power Plant Calculated Paramielers na 27 CHAPTER 6 CALIBRATING AND VERIFYING uns 29 Ae 29 E e EE 29 Calib Overviews for Each Parameter ooooccccccnnncooococcnnncccnnnnnnnnnnncnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnns 29 Calibration eren e EN pH Grab Sample or Comparison Cal comino acti 32 e e a OPUS AIN a ee ee ee ee ee ee ee eed he
14. C sensor after a power shutdown or failure The factory default setting is No Rinse Time TOC only To view or set the Rinse Time feature access the TOC menus Press Page Down until the Rinse Time option appears The Rinse Time is the time at start up initial connection to a 770MAX 770MAX system reset or 770MAX power reset the sensor will have sample water flowing through it before it starts making TOC measurements The rinse time can be set from 1 to 999 minutes To set the Rinse Time scroll to the value next to Rinse Time and enter the number of minutes you desire The factory default setting is 15 minutes Auto Balance TOC only The 5000TOC Sensor is capable of automatically balancing the two conductivity sensors to make them read identically when the UV light is off This assures accurate TOC measurements The user can e Turn the auto balance on or off e Set the time interval for the auto balance to occur e Set the tolerance for balancing the sensors e View the time until the next Auto balance e Seta hold outputs so the analog outputs and relays are held in their present states while an auto balance occurs e Perform an immediate auto balance To view or set the Auto Balance features access the TOC menus Press Page Down until the Auto Balance features appear The Auto Balance can be enabled or disabled by selecting yes or no The Auto Balance Time interval can set from 24 to 4000 hour
15. Highly Purified Water Conductivity Limits as a Function of Temperature Conductivity Limit 1S cm Temperature C Table 4 2 EP PW Purified Water Conductivity Limits as a Function of Temperature Type Select high low USP EP conductivity only reset flow or deionization capacity only Fault TOC Only or Error TOC Only Select Off to disable the setpoint USP EP and reset type setpoints always alarm on a high condition For Fault and Error setpoints will activate on any TOC Fault or Error condition Individual Faults or Errors cannot be selected Activate When the setpoint is exceeded the 770MAX can activate a relay or discrete output line Relays are only available on models with that option Discrete outputs are normally at 5V and go to O V when the setpoint is exceeded There are no delay hysteresis or inverted state settings available for discrete outputs as there are for relays Using Menus 17 On fault set If a fault is detected due to over range or disconnected sensor the 770MAX can allow the setpoint to be active or disable the setpoint Select Off to disable the setpoint when there is a fault detected On error set THIS FUNCTION IS AVAILABLE ONLY FOR TOC MEASUREMENTS WHEN A 5000T0C SENSOR IS CONNECTED TO THE 770MAX If an error is detected the 770MAX can allow the setpoint to be active or disable the setpoint Select Off to disable the setpoint when there is an error detected See 50
16. Industrial 200 Series Thornton 33142 33145 33159 33162 33173 33273 CAUTION Miswiring may damage sensors AC Power In 1000 65 isolated 12 VDC power supply or equivalent 4 o N 1000 67 Input Kit OO OO JO Om Po Non Magnetic Impeller Flow Sensor Thornton 770MAX Extension cable 2 conductor with shield 22 AWG Belden 8451 or equivalent 2000 ft 610 m maximum Non Magnetic Impeller Flow Sensors Data Industrial 4000 Series Thornton 33171 33172 33174 33177 33349 33350 CAUTION Miswiring may damage sensors AC Power In 1000 65 isolated 12 VDC power supply or equivalent 4 o N OO OO JO Om P GO Non Magnetic Impeller Flow Sensor Thornton 770MAX Extension cable 3 conductor with shield 20 AWG Belden 9364 or equivalent 2000 ft 610 m maximum 40 Pulse Flow Input Setup Appendix B Insertion Vortex Flow Sensors Fluidyne 2300 A Pulse Output Type Thornton 33358 33375 CAUTION Miswiring may damage sensors AC Power In 1000 65 isolated 12 VDC power supply or equivalent for Ch 6 for Ch 5 1000 67 Input Kit Insertion Vortex Flow Sensor Thornton 770MAX Extension cable 2 conductor with shield 22 AWG Belden 8451 or equivalent 2000 ft 610 m maximum Sanitary Turbine Flow Sensors Hoffer HO Series Thornton 33336 33348 33376 33377 CAUTION Miswiring may damage sensors AC Power In 1000 65 isolated 12 VDC power supply or equivalent 4 o N Whi
17. OC menus Press Page Down until the Conductivity Limit option appears This function is used to set a limit for the conductivity value measured by the 5000TOC Sensor that when exceeded will generate an error condition notifying the user that the recommended conductivity operating limit has been surpassed The factory default setting is 2 0 uS cm Over ride Limit TOC only To view or set the Over ride Limit feature access the TOC menus Press Page Down until the Over ride Limit option appears This function is used to prevent an error condition from happening when the Conductivity Limit for the 5000TOC Sensor is exceeded If set to yes there will be no error condition if the sample water to the 5000TOC Sensor is measured above the set limit If set at No an Error condition will occur The factory default setting is No Status The status fields are for display only to verify measurement and sensor information Reading Displays the latest reading for this measurement it will be updated every few seconds Sensor S N Displays the sensor s serial number as stored in the Smart Connector Smart Sensors only Cal Date Displays the sensor s most recent calibration date Chapter 4 MESSAGES Select a measurement letter to display any diagnostic system messages for that measurement These can be helpful in troubleshooting When using the 770MAX in conjunction with the 5000TOC Sensor the MESSAGES menu display w
18. Offset in units of Hz from the sensor installation manual into an Adder in units of GPM by multiplying the Offset by the original K factor Enter the result as the Adder in the 770MAX Measurements menu For example if the Offset is 0 3 and the K factor is 2 the Adder would be 0 3 x 2 0 6 46 Pulse Flow Input Setup Appendix B Flat Paddlewheel Signet Sensor Flow Inline Paddlewheel Burkert Sensor Constants Flow Constants Values below are for the Multiplier in pulses per gallon Values below are for the Multiplier in pulses per gallon The Adder is left at zero for all Signet sensors Data for The Adder is left at zero for all Burkert sensors Data for additional sensors is in the sensor installation manual additional sensors is in the sensor installation manuals available at www gfsignet com available at www burkert usa com Magnetic Hall Effect P515 Series 2536 Series Sch 80 Tees PVC 8 CPVC 480 19 257 72 174 67 83 39 58 58 32 48 21 833 SES Pipe Size Burkert 8030 8020 5 VDC models 1 2 3 4 991 71 545 14 352 43 177 18 117 85 66 739 42 994 13 541 26 652 7 626 15 006 Sch 80 PVC Saddles for Sch 80 PVC Pipe 32 480 66 739 21 833 42 994 13 541 26 652 7 626 15 006 4 162 8 325 2 370 5 016 Sch 80 PVC Saddles for Sch 40 PVC Pipe 27 350 54 700 18 874 37 159 12 638 23 697 6 728 13 456 3 730 7 459 2 153 4 529 Sch 80 PVC Fitting TU Socket Weld PART NO US GALS 33901 407 27 33902 284 82 33903 200
19. Pascal using the alphanumeric keys e mmHg Tank Level e bars e gallons Multiplier kg cm me This calibration constant also known as cell constant slope inches liter or span is pre programmed into all Smart Sensors and feet PSI automatically read by the 770MAX If a Smart Sensor is e inches connected to this channel no change should be made just Dissolved Ozone feet press Enter to continue to the next field g L full If the Multiplier stored in the Smart Sensor has been ppb changed from the factory setting a caret will be displayed ppm after the Multiplier and Adder 12 Using Menus Chapter 4 If a pulse input flow sensor is connected enter the appropriate multiplier factor and then press Enter See Appendix B of this manual or the sensor manual for its calibration factor in pulses per gallon See Chapter 6 Calibrating and Verifying for calibration instructions Note This multiplier value is a calibration constant unique to the sensor It is not the same as a units multiplier which indicates the factor of ten by which the displayed readings must be multiplied e g 2 K 2000 Adder This calibration constant zero or offset is also pre programmed into all Smart Sensors and automatically read by the 770MAX If a Smart Sensor is connected to this channel no entry is required just press Enter to continue to the next field If the Adder stored in the Smart Sensor has been changed from the factor
20. Pulse Flow Input Setup for details Installing the 770MAX 5 Other Connections Each connection terminal and terminal block are labeled by number The following tables identify each connection Terminal block and output connection availability are model dependent ICI CIC ICI E 6 Installing the 770MAX ra roman e TB6 Relay 1 normally open Relays Comply with relay current and voltage limitations When relays will be switching inductive loads connect an RC snubber component across the relay terminals to protect the contacts and prevent process upset Suggested component is QuenchArc 104M06QC100 Discrete Inputs and Outputs Discrete inputs TB2 4 and TB3 13 allow external voltage free normally open isolated contacts to pulse their 5V logic level to common TB2 2 and TB3 12 to provide discrete control action within the 770MAX The pulse must last at least 0 5 second This control may be configured to reset total flow reset total grains or restore a relay to non alarm condition for an acknowledge function Discrete outputs TB2 5 and TB3 14 provide a TTL CMOS level signal with respect to common TB2 2 and TB3 12 that may be used by external control circuits Discrete outputs can be assigned to setpoints in the 770MAX setup similar to relays CAUTION Route wiring to discrete inputs and outputs away from power or switching circuits and provide shielding to an earth ground at the far end of the cable Ana
21. Solids for ion exchange calculations are based on the conductivity and weight of the materials present expressed as their ion exchange equivalent as calcium carbonate Because this conversion varies with each application it should be determined on an individual basis For a defined composition of neutral minerals with conductivity the same as sodium chloride a TDS factor of 0 856 will give readout as ppm NaCl expressed as CaCO3 For conditions of strong base exchange a TDS factor of 0 435 will give readout as ppm NaOH expressed as CaCOs These are also the types of conversions used for Di Cap deionization capacity monitoring described later in the flow section HCI NaOH H gt 2SO settings allow the respective concentrations to be inferred from conductivity and read out directly as percent by weight This function must be used in applications having only the chemical and pure water present Conductivity is only a quantitative measurement and cannot tell if there are other conductive materials present Temperature Compensation The following types of temperature compensation routines are available for resistivity conductivity measurements standard standard 75 cation glycol 1 glycol 50 alcohol linear 2 00 Light 84 or none Standard compensation includes compensation for non linear high purity effects as well as conventional neutral salt impurities and conforms to ASTM standards D1125 and D5391 Standard 75 compensati
22. Spare Parts 58 080 000 58 080 001 58 080 002 58 080 003 58 080 004 58 080 005 58 080 006 58 080 007 58 080 008 58 080 009 58 080 011 58 080 012 58 080 013 58 080 014 58 080 015 58 080 016 58 080 017 58 080 018 58 080 019 58 083 000 58 080 001 58 080 002 58 080 100 58 080 103 58 083 003 58 079 000 58 079 001 58 082 000 58 085 011 58 085 012 58 085 013 58 085 014 58 085 015 58 085 016 58 085 017 58 085 018 58 080 107 58 080 108 84373 58 079 010 58 079 011 58 079 012 58 077 000 58 077 001 Chapter 8 SPARE REPLACEMENT PARTS Description Legacy No Part No 10 Terminal plug in connector 2 for models 775 __08 775 __1 3 for model 775 _ 3 25302 6 Terminal plug in connector 2 for models 775 __1 and 775 _ 3 25301 Fuse AC power models 775 _A_ 0 5 A slow blow 5 x 20 mm Littlefuse 218 500 or equiv 35092 Fuse DC power models 775 _D_ 2 0 A fast acting 5 x 20 mm Littlefuse 0217002HXP or equiv 35078 Panel mounting screws 6 32 x 7 16 4 regouiredh eee cee cece eee nee e ee eee eee eee ee teeta eeeea teeta teeta ea eeas 21800 Front panel assembly molded cover with gasket screws retaining washers and keypad 07331 s Screws for front panel 2 required included in front panel assembly above nee gt 21674 Retaining washers for front panel 2 required included in front panel assembly above 21675 S Vacuum fluorescent display Replacemen
23. THORNTON Part No 84372 Leading Pure Water Analytics 770MAX Multiparameter Analyzer Transmitter Instruction Manual OMettler Toledo Thornton Inc 2007 No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying other than where specifically noted for any purpose without the express written permission of Mettler Toledo Inc U S Government Restricted Rights This documentation is furnished with Restricted Rights METTLER TOLEDO THORNTON RESERVES THE RIGHT TO MAKE REFINEMENTS OR CHANGES WITHOUT NOTICE This document contains proprietary information which is protected by copyright All rights are reserved No part of this document may be photocopied other than where specifically noted reproduced or translated into another language without the prior written consent of Mettler Toledo Thornton Inc IMPORTANT SAFETY INFORMATION Follow all warnings cautions and instructions indicated on and supplied with this product Install equipment as specified in this instruction manual Follow appropriate local and national codes Use only factory documented components for repair Tampering or unauthorized substitution of parts and procedures can affect the performance and cause unsafe operation of your process Protective covers must be in place unless qualified personnel are performing maintenance If this equipment is used in a manne
24. TION The maximum ambient temperature allowed depends on the model and power supply voltage Model 775 _A2 should not be used with 240 VAC power See specifications and provide ventilation if necessary Panel Mount The 770MAX is supplied with four mounting screws and a gasket to provide a seal at the panel cutout To mount the 770MAX in an instrument panel 1 Use the illustration below to mark panel cutouts 100 7 3 97 Ha lte _ 74 17 4PLACES p EE A i i Br 96 0 111 4 125 0 492 978 4 39 12 5 gt DR 1 lar A A A E f 17 7 2 4 I7 ani TI o9 20 all Le 96 0 48 3 78 e 114 3 4 50 panel cutout mm inches If multiple instruments will be mounted on the same panel allow enough space for the flanges to overlap the panel between instruments dotted outline 2 Make the panel cutout and drill the mounting screw holes all cutouts should be clean and free of burrs 3 Remove the backing paper and slide the adhesive gasket onto the rear of the instrument flange Align it evenly and press into place The two small pins near each screw hole are intended to control compression of the gasket for optimum sealing 4 Slide the 770MAX into the panel and secure with 4 6 32 mounting screws supplied from the back NOTE If the rear cover is required install the 770MAX in the panel before attaching the cover Installing the 770MAX 3
25. TOC is determined by measuring conductivity before and after a high intensity UV light exposure which oxidizes organic constituents to carbon dioxide in the sample The difference in conductivity before and after the oxidation is used to determine the TOC concentration The system can be configured to automatically balance the conductivity sensors at a set time interval or on demand Under normal operating conditions the 5000TOC Sensor is continuously relaying information to and from the 770MAX The 770MAX display also acts as a status indicator for the sensor Ifthe display screen is set to display a measurement from the 5000TOC Sensor under normal operating conditions the display will show the usual measurement letter name and value If the 5000TOC Sensor is in any mode other than measurement mode such as Rinsing Autobalance TOC Off Error or Fault then this status is displayed by flashing alternately with the six characters of the measurement name The six character 5000TOC status indicators are as follows UV OFF Flashes when the UV lamp is turned off at the sensor Rinse Flashes when the sensor is in Rinse mode Autbal Flashes when the sensor is in the Auto balance mode Error Flashes when an Error condition exists with the TOC sensor Fault Flashes when a Fault condition exists with the TOC sensor If an ERROR or FAULT condition is displayed on the measurement screen the user can go to the Messages screen to retrieve m
26. These conclusions are based on test reports from Curtis Straus Littleton MA USA and Test Site Services Marlboro MA USA Anthony Bevilacqua Mettler Toledo Thornton Inc UL Recognition Mettler Toledo Thornton Inc 36 Middlesex Turnpike Bedford MA 01730 USA has obtained Underwriters Laboratories Recognition for 770MAX Multiparameter Analyzer Transmitters They bear the cULUS recognition mark signifying that the products have been evaluated to the applicable ANSI UL and CSA Standards for use in the U S and Canada US UL 3111 1 Electrical Measuring and Test Equipment CAN CSA C22 2 No 1010 1 WARRANTY This Warranty is given expressly and in lieu of all other warranties express or implied The Buyer agrees that there is no warranty of merchantability and that there are no other warranties express or implied which extend beyond the description on the face of this agreement Mettler Toledo Thornton Inc hereinafter referred to as The Company warrants to the original Buyer each electrode component or instrument manufactured and or sold by The Company to be free from defects in material and workmanship in normal use and service for a period of one 1 year from shipment unless expressly stated otherwise by the product packaging or expressly agreed to in advance by the Company The obligation of The Company under this warranty is limited to repair or replacement of the defective product at The Company s discretion All warranty cla
27. Voltage For ORP measurement no sensor calibration is recommended although one point calibration is possible It is recommended that the instrument read in absolute millivolts established by factory meter calibration Standard 30 Calibrating and Verifying ORP solutions are available for checking operation of sensors however their tolerance under process conditions is generally too wide to allow reliable calibration Resistivity Conductivity Only a one point calibration is used for 2 electrode resistivity or conductivity sensors With 4 electrode sensors two point calibrations are performed Select a fresh standard with a value close to the expected sample resistivity conductivity but not less than 100 uS cm The uncertainty due to atmospheric carbon dioxide contamination of the standard would be greater than the non linearity of the measurement between 100 uS cm and pure water Remember to enter the appropriate unit multiplier u m k or M For polymer body sensors allow at least 15 minutes equilibration time for the temperature measurement and compensation to fully stabilize TOC Complete calibration of the 5000TOC Sensor requires calibration of the two internal conductivity and temperature sensors and the internal flow sensor as well as TOC calibration which is typically performed using known concentrations of Standard TOC Solutions Refer to the 5000TOC Sensor manual for specific details of the calibration procedur
28. about the type of sensor to be calibrated The accuracy of any calibration is limited by the accuracy of the standards and technique To perform a sensor calibration 1 Access the Calibration Menu 2 Select sensor calibration 3 Enter the hold time in minutes If holding the outputs is not necessary leave at zero Press Page Down 4 Select the measurement letter corresponding to the sensor to be calibrated 5 Select appropriate calibration type One point air or zero calibration for dissolved oxygen one point compare span or zero calibration for ozone 6 Place the sensor in the first calibration solution or establish conditions for the first calibration point Press Page Down The current displayed reading will be 7 Enter the value of the first calibration standard point including units multiplier if necessary as Cal point 1 NOTE For pH the 770MAX automatically recognizes the nearest buffer value corrected for temperature Press Enter if the value is correct or change it if incorrect For dissolved oxygen the 770MAX automatically computes the oxygen concentration for air saturated water corrected for barometric pressure and temperature 8 Wait for a stable reading then press Page Down to begin calibration The displayed value is before calibration and will be slow to update 9a If performing a one point calibration go to Step 12 9b If performing a two point calibration place the sensor in the
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30. and reset it to zero 1 Use the Reset Menu see Chapter 4 Using Menus 2 If external reset is enabled see Measurement Menu in Chapter 4 Using Menus then total flow will be cleared when the discrete input line is momentarily pulsed low See Chapter 2 Installing for terminal connections 3 Configure a total flow or deionization capacity setpoint as a reset type with its value at the desired point for reset Flow Rate is expressed in volume per unit time Flow Velocity is expressed in feet per second Percent Recovery can be calculated as the flow ratio of pure water output to feedwater input through a Reverse Osmosis membrane For set up see DERIVED MEASUREMENTS later in this chapter Deionization capacity in ppm gallons can be inferred by measuring the flow rate and mineral concentration entering a deionization bed with results displayed in units of ppm gallons For set up see DERIVED MEASUREMENTS later in this chapter Flow measurement in terms of Hertz can be used as a diagnostic tool to verify operation of pulse type flow sensors ORP This measurement type is used to measure oxidation reduction redox potentials or any other sensor output in volts No special settings or calibration are normally required TANK LEVEL VOLUME The level of solution inside a tank is measured with a tank level sensor mounted on the tank Measurements can be displayed in units of gallons ppm Gallons er m RE lite
31. calibration See Chapter 6 Calibrating and Verifying for calibration instructions NOTE The calibration constant multiplier is a value unique to an individual sensor It is not the same as a units multiplier which indicates the factor of ten by which the displayed readings must be multiplied e g 2 K 2000 Temperature Compensation Resistivity conductivity and pH readings can be compensated for changes in temperature For example the resistivity of pure water at 25 C is 18 18 Megohm cm However at 30 C its resistivity is 14 08 Megohm cm Temperature compensation will adjust the reading to a constant temperature usually 25 C and the value of pure water will always be 18 18 Megohm cm The source of the temperature measurement may be from the sensor s built in temperature sensor a sensor connected to another channel or a manually entered fixed value Generally best results are achieved by using the built in temperature sensor because it is immersed in the same environment Temperature compensation details are provided in the appropriate measurement sections later in this chapter RESISTIVITY CONDUCTIVITY The measured resistivity or conductivity of a solution can be displayed in terms of e resistivity in ohm cm conductivity in S cm or S m total dissolved solids TDS e HCI e NaOH e H2S04 e rejection Resistivity is expressed in ohm centimeters Q cm which is the reciprocal of conductiv
32. closure Display keypad Material Rating Panel Cutout Wall Mount Pipe Mount Weight Sensor Patch Cord Length Power All 775 xxx models are CE compliant and UL and cUL CSA standards Recognized See ratings declaration page If the equipment is used in a manner not specified by Mettler Toledo Thornton Inc the protection provided by the equipment may be impaired For indoor use only Pollution Degree 2 20 to 80 C 4 to 176 F Model 115 VAC amp 24 VDC Power 230 VAC Power 775 __0 10 to 50 C 14 to 122 F 10 to 50 C 14 to 122 F 775 __ 1 10 to 50 C 14 to 122 F 10 to 40 C 14 to 104 F 775 __2 10 to 40 C 14 to 104 F 10 t0 40 C 14 to 104 F 0 to 80 RH up to 88 F 31 C decreasing linearly to 50 at 104 F 40 C up to 6500 ft 2000 m Evaluated to 1EC664 Installation Overvoltage Category Il Local Level 20 character x 4 line backlit LCD or vacuum fluorescent 20 tactile feedback keys ABS PC alloy UV and chemical resistant NEMA 4X panel mounting sealed back cover available 3 78 x 3 78 96 x 96 mm 1 4 DIN With accessory rear cover 8 84 x 4 82 225 x123 mm overall With accessory bracket for a 2 pipe 2 Ibs 0 9 kg 300 ft 91 m maximum for pressure and level sensors 150 ft 45 6 m maximum reduced accuracy for mid range conductivity with patch cords longer than 200 ft 61 m reduced accuracy with 4 E conductivity sensors only at hig
33. ct a new measurement letter b Press Enter to bypass the Sensor Input field if none is displayed press the up arrow to select any input channel then press Enter c Select units of diff d Press the left arrow key three times to return to the beginning of the Sensor Input field Select the letter for the initial measurement and then for the measurement to be subtracted e Complete the remaining menu options as desired 4 Press Menus twice to return to display mode All three measurements will be displayed incoming flow outgoing flow and the difference 26 Making Measurements Ratio Measurement by ratio allows one measurement to be divided by another e g measurement A measurement B displayed reading Set up measurements as for Difference see above except select units of ratio Rejection Rejection is measured in conductivity to determine the ratio of impurities removed from product water to the total impurities in the incoming feed water The formula for obtaining percent rejection is 1 Product Feed x 100 Rejection The figure below shows a diagram of an RO installation with sensors installed for percent rejection Conductivity Sensor Conductivity Sensor Feed Product Reverse Membrane Reject rejection diagram To set up the rejection measurement 1 Set up the measurement for the conductivity sensor installed in the feed line 2 Set
34. e The conductivity sensors in the TOC sensor are calibrated like other two electrode conductivity sensors as described above Similarly the temperature calibration for each sensor is performed as in a temperature sensor The flow sensor in the TOC sensor is calibrated using two points The first point should be near 15 mL min The second point is near 25 mL min Accurate determination of the flow rate is achieved using volumetric glassware and an appropriate timer stopwatch to measure the flow rate of the water exiting the tubing from the SAMPLE OUTLET Collect enough water to accurately determine the flow rate TOC calibration can be done at 1or 2 points The calibration solution should be allowed to flow through the sensor long enough for a stable reading to be reached The TOC value of the standard solution can then be entered into the calibration menu Whenever performing a 1 point TOC calibration the user has the option to alter the calibration factor for the slope or the offset Temperature A one or two point calibration can be performed for temperature sensors though calibration is rarely required For temperature measurement in polymer body conductivity sensors allow at least 15 minutes equilibration time for the measurement to fully stabilize Flow In some instances a one point calibration of flow sensors is needed to accommodate non ideal piping arrangements A second point of calibration can be performed at zero
35. e allows the user to turn the UV Lamp in the sensor On or Off On the third line the user will see the message Push 5 for TOC menu Once the 5 key is pushed the Page Down or Page Up keys can be used to access the unique TOC menus For more information on making TOC measurements with the 770MAX refer to Chapter 5 of this manual Detailed operational instructions for the 5000TOC sensor are included in the 5000TOC Sensor instruction manual 84445 Set Flow Rate TOC only Setting the flowrate for the TOC sensor is a requirement at sensor startup Setting this menu item to yes changes the function of the four LEDs on the front of the TOC sensor allowing them to be used as a flow rate indicator All four LEDs light when the flow rate is set to the optimum value Acceptable operation is achieved when all 4 LEDs are lit The Set Flow Rate menu item MUST be set to no once the flow rate has been properly adjusted See the 5000TOC Sensor instruction manual 84445 for details of how to set the flow rate through the sensor UV Lamp TOC only This menu option allows the user to turn the UV lamp in the 5000TOC sensor on or off This is a convenient means to control the UV lamp Please note the UV lamp switch at the sensor can over ride this switch if the sensor key lock function is off Lamp Time Reset Limit TOC only The UV lamp in the 5000TOC Sensor is rated for 4500 hours of normal usage The 770MAX will disp
36. e begin with a daily calibration then extend to weekly then to monthly as experience and process accuracy dictate Such a sequence is also appropriate for new sensors because they will show some initial drift as they acclimate to the process Two methods are used for pH sensor calibration buffer and grab sample Buffer calibration requires removal of the sensor from the process rinsing it with deionized water and immersing it in Calibrating and Verifying 29 standard buffer solutions It is usually done as a two point calibration and gives the most direct traceablilty to the standard s Use fresh traceable standard buffer solutions and rinse the sensor well between solutions Grab sample calibration is an indirect method that allows the sensor to remain in the process it is limited to a one point calibration A sample is removed and measured by a portable pH system that has been previously calibrated in standard buffer solutions This value is used to calculate a difference to be applied during a one point calibration procedure See pH Grab Sample Calibration below For greatest accuracy a two point buffer calibration is generally recommended In some situations it is most convenient to do a grab sample calibration on a routine basis with a more accurate two point buffer calibration performed at less frequent intervals For a one point calibration the buffer value chosen should be near the expected sample pH For a two po
37. e key should be displayed Press Menus twice to exit this test Flow Channels Diagnostic not currently available Inputs The level of the discrete input lines high or low will be displayed and updated Outputs Set the discrete outputs low or high for testing Press 1 to set low or 2 to set high Self Tests An automated series of tests will check the operation of the following components Smart sensors Analog outputs Discrete outputs Discrete Inputs e Network e Display circuit board e Measurement circuit board e Options circuit board Other components ROM RAM etc Chapter 7 The display shows how many times the tests have run the elapsed time and the number of errors found Press Menus to stop the test sequence Analog Output Select an output to test then enter a current value milliamps to send out the analog output then press Page Down to set Repeat test with a second current value to verify range response Chapter 7 Maintenance amp Troubleshooting 35 CHAPTER 8 ACCESSORIES AND SPARE PARTS ACCESSORIES Description Legacy No Part No Patch cords have connectors at both ends for 770MAX and Smart Sensors not used with pulse input flow sensors Pressure and level sensors are limited to 150 ft 45 6 m maximum and 4 electrode conductivity sensors are limited to 50 ft 15 2 m maximum length To connect Ozone Smart Sensors in Europe to meet CE electromagnetic compatibil
38. e are required The new calibration data is held in the 77OMAX memory for use by any measurement using the sensor The data is also saved in the Smart Sensors memory The sensor can then be disconnected or moved to another channel or 770MAX without requiring re calibration If necessary the user calibration data can be cleared restoring factory calibration data using the Smart Sensors Menu under the Other Menus see Chapter 4 Using Menus The basic calibration procedure and sequence of screen messages are the same for all sensor types Following is an overview of each sensor type followed by the 770MAX sensor calibration procedure pH is the only routinely calibrated measurement and is emphasized here NOTE The accuracy of a calibration is limited by the accuracy and traceability of the standards and their vulnerability to contamination Also it is important to ensure that the meter is properly calibrated before performing a sensor calibration Calibration Overviews for Each Parameter pH Due to aging in the process pH sensors require periodic re calibration The stability of the sensor depends on the nature of the sample solution pressure and temperature variations etc For this reason calibration intervals should be based on experience with the particular application For new applications it is advisable to re calibrate frequently If no significant variation is found the calibration interval may be increased For exampl
39. e it easier to navigate Display The four line display provides read out of measurement data as well as all menu screens and data entry fields Most display information and prompts are self explanatory for further assistance press Help and page down to read the message Press Help again to return to the original screen If an up or down arrow is shown on the right side of the display then more screens of information are available Chapter 2 A flashing value in the display mode indicates a setpoint for that measurement has been exceeded A high alarm condition is indicated by gt after the value A low alarm condition is indicated by lt A flashing arrow gt in the lower right corner indicates that a measurement not currently being displayed has exceeded a setpoint A flashing dot between the measurement letter and the channel number indicates a defective Smart Sensor is connected to that channel Smart communication has been lost Example display A Chanl 1 234 uS cm B Chan 25723 C C Chan2 35 71 GPM D Chan3 8 96 pH gt Keypad The keypad consists of 9 function keys and 11 alphanumeric entry keys Menus exit Press Menus to access the menu mode Press again to exit the menu mode Page Up Page Down Press Page Down to move to the next screen of information if any Press Page Up to move to the previous screen of information if any Additional screens are indicated by an up or down arrow on the r
40. e source Isopotential Point Most sensors have a zero potential or isopotential point IP of pH 7 0 Special purpose electrodes with a zero potential at values other than 7 0 will have this identified in their instruction manuals A different IP setting will allow proper temperature compensation of these special electrodes Solution Temperature Coefficient For high purity pH measurements the solution temperature coefficient STC compensates for the ionization of pure water This is in addition to the conventional Nernst temperature compensation which is always active STC is useful for pure water samples with a conductivity of less than 30 uS cm where the changing ionization of water is significant It references the pH to 25 C In all other applications leave the STC value at zero For ammonia phosphate and or amine treated power plant samples the STC should be set to 0 033 pH C For pure makeup water or boiling water reactor samples the STC should be 0 016 pH C The appropriate values for other pure water compositions may be determined by developing temperature vs pH data for the particular sample with STC set at zero The negative slope of this data becomes the STC value Chapter 5 TEMPERATURE The measured temperature of a solution can be displayed in units of a F A temperature sensor is usually incorporated into a pH or conductivity resistivity sensor This temperature sensor can be used fo
41. ecord the pH displayed on the 770MAX at the time the grab sample is taken Measure the grab sample pH as soon as possible 4 Subtract the recorded 770MAX pH from the grab sample pH Record the difference retaining the sign positive or negative 5 Access the 770MAX Calibration Menu 6 Select sensor calibration 7 Select the measurement letter corresponding to the sensor to be calibrated 8 Select one point calibration 9 Press Page Down The current reading will be displayed 10 Add the difference value calculated in step 4 to the currently displayed pH and immediately enter the result as the calibration standard value 11 After calibration is complete the measurement values before and after calibration are displayed These values are for display only 12 Enter the date as month day year mm dd yy then press Page Down to save 13 Select Yes to save the calibration data in the Smart Sensor memory otherwise select No ANALOG OUTPUT CALIBRATION This section is not for startup scaling of analog outputs for that see Chapter 4 Using Menus This section fine tunes the 4 and 20 mA signal levels The analog output signals have been factory calibrated to specifications They may be re calibrated in a two step process where 0 4 mA and 20 mA levels are adjusted A 32 Calibrating and Verifying precision milliammeter must be connected in series with the output to perform the calibration To perform an analo
42. ements are displayed used to define how Scrolling In display mode measurements are displayed four per screen To define how additional screens of measurements are viewed the following options are available manual auto and locked Manual allows you to scroll through the measurements by pressing the up down arrow or page up down keys Chapter 4 Auto changes the measurements displayed approximately every five seconds Locked prevents users from changing the display with the arrow and page keys Measurements Measurements can be displayed in alphabetical order by measurement letter or in a user defined order Select Custom to choose the order of display Display Setup custom measurements only Display line X For each line of the display select the desired measurement letter and then press Enter SECURITY The Security Menu is used to prevent unauthorized changing of parameters Users can be locked out of all menu functions locked out of calibration only or locked out of all menus except calibration Without the correct numeric password the user will only be able to view the menus A master password is required to change any passwords lockout options or to enable disable the security program Two user passwords can be defined The initial master and user passwords are set to a default of 00000 Goto Use the up down arrow keys to select the desired security option then press Enter The available
43. ents may all be reassigned as required for the application including additional measurements of secondary parameters such as temperature total flow readout in different units etc After entering the Measurements Menu use the up down arrow keys to select the desired letter then press Enter to continue with the measurement setup Complete all setup for one measurement before starting another To set up the next measurement press Page Up until you return to the initial measurement screen and then select another letter to define the new measurement Sensor Input Use the up down arrow keys to select the input channel 1 through 6 where the desired sensor is connected then press Enter If a Smart Sensor is connected to that channel the sensor type and calibration data will be read by 770MAX Then you may continue with selecting units measurement name etc Remember that Channels 5 and 6 can be used for pulse flow sensors only Units The available units of measure are determined by the type of sensor defined for the channel Following are the available units for each type pH Dissolved Oxygen e pH e g L volts e ppb E e ppm e e sat e mmHg TOC e bar e gC L gramCarbon Liter nano micro milli Voltage ORP e ppmC volts e ppbC amps e ppt C parts per trillion Also the following comparative units can be defined in conjunction with input from a second sensor e ratio e difference e rejection e recove
44. eration in the range of 100 240 VAC 47 63 Hz 770MAX models 775 _D_ have a DC power supply for operation in the range of 20 32 VDC Select the wiring table accordingly Terminal block TB1 provides the connections for the input line power See above section for wire sizes To connect strip 0 5 in 13 mm of insulation from each conductor Turn the terminal screws fully counterclockwise then insert the appropriate wire into its terminal and securely tighten adjacent screw CAUTION a full 0 5 in 13 mm of bare conductor must be exposed for reliable power connection to these deep terminals This is much more than is required for other terminals For 775 _A_ models using AC power make connections as follows Board Terminal Connection Color White Black TB1 AC power neutral AC power hot Chapter 2 CAUTION Electrical noise suppression capacitance in the 770MAX AC power supply allows up to 1 mA of leakage current to earth ground Do not connect more than three 770MAX instruments to a GFI ground fault interrupt protected circuit For 775 _D_ models using DC power make connections as follows Terminal Board Connection Earth ground TB1 DC power Negative PS DC power Positive WARNING MISWIRING THE POWER MAY CAUSE A HAZARD DAMAGE THE INSTRUMENT AND WILL VOID ALL WARRANTIES Ferrite Bead Installation required for maintaining CE rating The enclosed ferrite suppressor module must be installed
45. eric entry complete press Enter to move the cursor to the next field When the last field on a screen has been completed pressing Enter will return the cursor to the top of the screen If the menu consists of more than one screen of fields press Page Down to continue 10 Getting Started Chapter 3 CHAPTER 4 USING MENUS INTRODUCTION After installation is complete use the menu system to set up the 770MAX for your applications First set up the Measurement Menu for each measurement Then go through the rest of the menus to set any outputs setpoints relays and other functions as necessary Menu selections are automatically saved as you make them although on exiting menus you can restore previous settings If desired photocopy the Measurement Parameters Record form provided in Appendix A to record the menu options selected After all menu options have been set return to display mode to view measurement readings MAIN MENU The Main Menu is used for all instrument functions except the actual display of measurements The following sub menus are available from the Main Menu Measurements define measurement parameters sensor units custom name temperature compensation calibration constants etc Messages display any messages or encountered for each measurement channel e Calibrate perform sensor meter or analog output calibration e Analog Outputs assign outputs to measurements as we
46. ery e ratio difference sum e total flow flow velocity grains ppm gallons e Calculated pH CO chlorides sulfates derived from appropriate power plant conductivity measurements Chapter 1 Smart Sensors are rapidly installed using patch cords up to 300 feet 91 m long with connectors at both ends Some sensors are restricted to shorter distances Smart Sensors used with the previous generation 770PC instrument are not compatible with 770MAX due to signal processing and connector differences Where it is desired to update existing sensors for use with 770MAX consult Thornton Service The 770MAX can display up to 16 measurements each with custom six character names and engineering units These measurements are displayed four to a screen and can be manually or automatically scrolled Standard outputs include 4 isolated analog 0 4 20 mA signals RS232 and two TTL discrete output ports Optional outputs include 4 additional analog signals and 4 SPDT relays All options are contained within the single 1 4 DIN enclosure The 770MAX is supplied with mounting hardware for sealed front panel mounting Pipe and wall mounting kits as well as sealed rear cover can be ordered separately Introduction 1 CHAPTER 2 INSTALLING THE 770MAX UNPACKING Carefully unpack the 770MAX the carton should contain 770MAX instrument mounting screws 4 e 770MAX Instruction Manual panel mounting gasket INSTRUMENT
47. essure readout available in mmHg or bar Two standard buffered TTL CMOS level or dry potential free contacts for resetting flow totalizers or total grains measurement 16 set individually as high low USP or EP limit on any measurement Any relay can be programmed to operate from multiple setpoints Optional 4 SPDT relays rated 5 amp max resistive load up to 30 VDC or 250 VAC potential free Two standard buffered TTL CMOS level Four standard four additional optional powered 0 4 20 mA outputs 500 ohm load maximum isolated from input and from ground accuracy 0 05 mA typical Outputs are assignable to any measurement with free scaling in linear bi linear logarithmic or dual range format RS232 standard maximum distance 50 feet field selectable up to 38 4 k baud 0 3 of reading 1000 ohms to 6 Mohms 0 5 of reading 6 Mohms to 10 Mohms 1 of reading or 0 5 ohm whichever is greater 10 to 1000 ohms Divide range limits by cell constant to obtain resistivity limits in Mohm cm 0 2 C with Pt1000 RTD 0 02 pH 3 mV see sensor specifications for dissolved oxygen and dissolved ozone 0 1 or 0 001 Hz whichever is greater 0 02 of reading 1000 to 10 Mohms 0 8 of reading 10 to 1000 ohms for cond resist 0 05 C 0 02pH 0 3mV Specifications Ratings Approvals Environmental General Storage Temperature Operating Temperature UL Humidity Test Altitude UL Electrical Environment En
48. ete Input 1 or 2 Connect the external contacts to the appropriate discrete input terminals identified in Chapter 2 Installing the 770MAX NOTE The contacts must be isolated and voltage free TDS Factor conductivity resistivity only Total Dissolved Solids TDS is another useful way to measure and display conductivity resistivity data The default setting of 1 0 for the TDS Factor provides conversion to sodium chloride at approximately 0 5 ppm per uS cm For more information on TDS refer to Chapter 5 Making Measurements Using Menus 13 Tank Height level only Enter the full scale tank height in feet for a level measurement Level measurement is linear for straight sided tanks only Area level only Enter the cross sectional area of the tank in square feet to allow a level measurement to compute volume units TOC Total Organic Carbon Measurement Access to TOC Menus The following Measurement Menu items are for 5000TOC Sensor setup ONLY To access these menus press Menu scroll to Measurements and press Enter Select the Measurement letter A B C P for the TOC measurement of which you wish to access these unique menus After the TOC Measurement letter is selected press Page Down to access the 3 screen of the TOC measurements menu There are three operations that can be performed through this menu The first line of this menu allows the user to set the sample flowrate through the sensor The Second lin
49. g output calibration 1 Connect the milliammeter to the analog output being calibrated Access the Calibration Menu Select analog output calibration Select the analog output channel to be calibrated oO P o ND Adjust the 4 mA adjust percentage display to obtain the desired reading on the milliammeter or other output reading device A higher percentage display produces a lower output signal When done press Page Down 7 Adjust the 20 mA adjust percentage display to obtain the desired reading on the milliammeter and press Page Down 8 Enter the calibration date as month day year mm dd yy and press Page Down to store it 9 To perform another calibration press Page Up to return to the initial calibration screen To go to display mode press Menus twice METER CALIBRATION The 770MAX is factory calibrated within specifications It is not normally necessary to perform meter re calibration unless required to meet Q A protocols or extreme conditions cause out of specification operation Meter measuring circuits are calibrated by input channel and circuit type Each channel contains resistance temperature voltage and frequency measurement circuits The resistance circuits can be calibrated over four ranges 500K 20K 2K and 200 ohms In addition to calibration the most recent calibration can be verified to ensure best performance To calibrate or verify the meter measuring circuits precision electr
50. h conductivity with patch cords longer than 50 ft 15 m 100 240VAC 20 watts maximum 47 63 Hz or 20 32 VDC 30 watts maximum DC power must be isolated from line and limited to 8 A or less On power loss all stored values are retained in non volatile memory without batteries Clock does not run when power is off 770MAX MODEL NUMBERING Example model 775 L A 0 has a liquid crystal display AC power and 4 analog outputs pe KZ D 20 32 VDC Display option Output option 0 4 analog outputs 1 4 analog outputs 4 relays 2 8 analog outputs 4 relays not for 240 V operation Power option A 100 240 VAC L backlit liquid crystal display V vacuum florescent display Specifications 49 RATINGS C Declaration of Conformity We Mettler Toledo Thornton Inc 36 Middlesex Turnpike Bedford MA 01730 USA Declare Under our sole responsibility that the product 770MAX Multiparameter Analyzer Transmitter All 775 XXX Models to which this declaration relates are in conformity with the following European harmonized and published standards at the date of this declaration EMI Test EN 55011 For Radiated and Conductive Emissions for a Class A device Safety EN 61010 1 Safety requirements for electrical equipment for measurement control and laboratory use 2001 Second edition EMC Emissions and Immunity EN 61326 Measurement Control and Laboratory Equipment EMC requirements
51. hat work DISSOLVED OXYGEN The measurement of dissolved oxygen concentration can be displayed in units of 902 grams per liter g L ppmO2 parts per million mg L ppbO2 parts per billion ug L sat percent saturation Sensors for dissolved oxygen come pre calibrated for zero offset The user should perform a simple calibration using air as the reference prior to use Automatic corrections for temperature and barometric pressure are provided The barometric pressure may be displayed as another measurement in units of mmHg or bar For diagnostic purposes the senor output in voltage or current depending on sensor type may also be displayed DISSOLVED OZONE The measurement of dissolved ozone concentration can be displayed in units of 903 ppmO3 parts per million mg L grams per liter g L ppbO3 parts per billion ug L Making Measurements 23 Perform zero and span calibrations after connecting the ozone sensor and allowing it to become fully polarized Automatic correction for temperature is provided For diagnostic purposes the senor output in current may also be displayed TOTAL ORGANIC CARBON TOC The measured TOC total organic carbon of a solution can be displayed in units of gC L nano micro or milli ppmC ppbC or pptC parts per trillion The conductivity resistivity and temperature of the sample can also be displayed by setting up another measurement for those parameters With the 5000TOC Sensor
52. he page up down keys Alternatively the display can be configured to automatically scroll through the measurements in any convenient order See DISPLAY SETUP in Chapter 4 Using Menus for available options Flashing measurements indicate a setpoint has been exceeded A flashing arrow gt in the lower right corner indicates that a setpoint has been exceeded for a measurement that is not currently displayed A flashing dot after the measurement letter indicates a defective Smart Sensor is connected to that channel Smart communication has been lost Averaging filtering of measurements may be momentarily suspended Press Enter in the normal display mode An asterisk will appear briefly in the lower right corner and all measurements will be updated once with no averaging Averaging resumes with subsequent updates Sensor Constants Each sensor is defined by a set of calibration constants also known as sensor constants The two constants multiplier and adder are used to derive an accurate measurement from the sensor s output signal The multiplier is also known as slope or span The adder is also known as the offset or zero point When using Smart Sensors these constants are stored in the Smart Sensor s memory and automatically read by the 770MAX If using a pulse input flow sensor consult the 22 Making Measurements sensor instruction manual for guidance in entering these values These constants are re calculated during
53. he returned part is received and evaluated by factory personnel The Company is not responsible for products returned without proper authorization Factory Restocking Charge Items returned to The Company more than 30 days after shipment will be subject to a 25 restocking charge plus any additional charges for refurbishment to salable condition The Company will not accept returns more than 90 days after shipment unless returned under warranty or for non warranty repair Special Products Cancellation or return of special products will not be accepted Disclaimer of Damages In no event shall The Company be liable for any type of special consequential incidental or penal damages whether such damages arise out of or are a result of breach of contract warranty tort including negligence strict liability or otherwise Such damages shall include but not be limited to loss of profits or revenues loss of use of the equipment or associated equipment cost of substitute equipment facilities down time costs increased construction costs or claims of The Buyer s customers or contractors for such damages The Buyer agrees that in the event of a transfer assignment or lease of the equipment sold hereunder The Buyer shall secure for The Company the protection afforded to it in this paragraph Mettler Toledo Thornton Inc 36 Middlesex Turnpike Bedford MA 01730 Tel 1 781 301 8600 Fax 1 781 301 8701 Toll Free 1 800 510 PURE US and C
54. ifted It can give a more reliable and faster zero calibration than using a zero solution In the Measurements menu page down and set Temperature Source to Fixed at 25 C or 77 F Disconnect the probe from the preamp Note the preamp must be connected to the 770MAX Perform a sensor zero calibration Restore the Temperature Source to This Ch Reconnect the probe and allow time for it to repolarize before using measurements Dissolved Ozone Perform zero and comparison span calibrations after connecting the ozone sensor and allowing it to become fully polarized Perform a zero calibration by leaving the probe in air or ozone free water and step through the AirZero calibration procedure in the Calibrate Sensor menu The zero calibration is generally quite stable and is performed at startup and at infrequent intervals thereafter Perform a span calibration by comparison while measuring a stable ozonated sample Select Compare calibration in the Calibrate Sensor menu and enter the value of another calibrated ozone instrument or the value of a colorimeter reading on the same sample A colorimeter sample must be taken from the same point and read very quickly to limit errors due to the natural decay of ozone The span Chapter 6 calibration is performed periodically to accommodate gradual membrane aging and other effects Calibration Procedure This procedure is generic for all parameters Refer above to specifics
55. ight side of display When finished with a data entry screen press Page Down to go to the next one Help Press Help to view more information or instructions regarding the current screen or data entry field Press Page Up or Down as necessary to view the entire message Press Help again to return to the original screen Enter Press Enter to select a menu option to select an option from a list to complete an alphanumeric entry or move to the next data entry field Arrows The four arrow keys function as follows Up press to view the next item in a list of options Down press to view the previous item in a list of options Left press to move the cursor left in a line of text or numbers may also move cursor to the previous field Right press to move the cursor right in a line of text or numbers may also move cursor to the next field Chapter 3 Alphanumeric keys The alphanumeric keys are multi functional For example the 1 key can be used to type the letters A B C in either upper or lower case as well as the numeral 1 Repetitive presses of the same key produce the different entries Using the 1 key as an example e first press A second press B e third press C fourth press a e fifth press b e sixth press c seventh press 1 then the sequence repeats Notes The 0 key will yield the following characters O The key will yield the follo
56. ill be different There will be three options in the View Messages menu as follows 1 Current Messages 2 Messages History 3 Clear History In item 1 select a measurement letter to display any diagnostic system messages for that measurement If the measurement selected is TOC and the message is related to a Fault or Error condition the message will be preceded with the letter F for Fault or E for Error Item 2 Message History allows the user to view the last six messages associated with the selected measurement Item 3 Clear History allows the user to clear the Current Messages and the Messages History for the selected measurement CALIBRATE MENU The Calibrate Menu is used to calibrate the sensors the analog outputs or the meter For detailed calibration instructions see Chapter 6 Calibrating and Verifying The 770MAX meter components are factory calibrated within specifications It is not normally necessary to re calibrate Best sensor performance is normally obtained by using the factory documented cell constants already stored in Smart Sensor memory However pH sensors require periodic re calibration see your sensor instruction manual for recommendations To perform calibration of any component accurate and precise standards are required ANALOG OUTPUTS The Analog Outputs Menu is used to assign analog outputs to measurements and define any necessary options Four or eight analog outputs are p
57. ims shall be returned to The Company pursuant to The Company s Returned Goods Authorization program Shipping costs including return shipping are the responsibility of The Buyer The Company assumes no responsibility for any direct or indirect costs associated with removal of defective products or re installation of replacement products The Company shall not be responsible for damage to any electrode component or instrument resulting from misuse negligence accident or resulting from repairs alterations or installations made by any person or firm not duly authorized by The Company No agent is authorized to assume for The Company any liability except as above set forth The Company warrants that services will be performed in a workmanlike manner in conformity with standard industry practice Should any nonconformity be detected within 30 days after the work is completed and prompt notification is made by Buyer in writing to the Company Company will supply the necessary service direction or consultation to correct the nonconformity Returned Goods Policy A Returned Material Authorization RMA number must accompany all returned goods This authorization is obtained by calling our Technical Service 800 510 7873 or 781 301 8600 All transportation costs on authorized returns must be prepaid Authorized replacement parts sent prior to receipt and evaluation of merchandise being returned will be invoiced in full Credit will be issued only after t
58. int calibration buffer values should bracket the anticipated measurement range if possible The difference between the two should be 2 pH units or more Automatic buffer recognition allows the 770MAX to recognize pH buffer values during calibration When the sensor is put in a buffer solution the meter automatically displays the closest buffer value corrected for temperature pH vs temperature tables for 4 00 6 86 7 00 9 00 9 18 10 00 pH 25C buffer solutions are stored in memory Since some values are very close to each other it may be necessary to manually correct the automatic value provided Temp C pH of buffer solutions 0 4 00 6 984 7 13 9 26 9 464 10 34 5 4 00 6 951 7 10 9 21 9 395 10 26 10 4 00 6 923 7 07 9 15 9 332 10 19 15 4 00 6 900 7 05 9 10 9 276 10 12 20 4 00 6 881 7 02 9 05 9 225 10 06 30 4 01 6 853 6 99 8 96 9 139 9 94 35 4 02 6 844 6 98 8 92 9 102 9 90 40 4 03 6 838 6 97 8 89 9 068 9 85 45 4 05 6 834 6 97 8 86 9 033 9 81 50 4 06 6 833 6 97 8 83 9 011 9 78 55 4 07 6 834 6 97 8 80 8 985 9 75 60 4 09 6 836 6 98 8 78 8 962 9 70 70 4 13 6 845 6 98 8 76 8 921 9 67 NOTE In most applications an adder offset of more than 2 5 pH units or a multiplier of less than 0 8 is an indication that the sensor should be replaced soon See pH Sensor Diagnostics in Chapter 7 Maintenance amp Troubleshooting ORP
59. istor and or Vortex Flow Sensors Asahi America Thornton 33308 33335 CAUTION Miswiring may damage sensors Vortex Flow Sensor diode as shown They are available in separately ordered flow input kit 1000 67 which should be mounted nearby The 1000 67 kit has a 2 2KQ 0 5W resistor and 1N4148 or 1N914 diode mounted on a 3 position screw mounted terminal strip See the end of this chapter for power supply and kit dimensions WARNING POWER SUPPLY 1000 65 IF USED HAS OPEN POWER TERMINALS AND MUST BE MOUNTED INSIDE AN ENCLOSURE TO PROTECT PERSONNEL FROM SHOCK HAZARD The following diagrams provide the wiring connections for pulse input flow sensors When two pulse input sensors are used they may use the same shield 1 common 2 and power 3 terminals at the 770MAX but use separate input terminals terminal 7 for Channel 5 or terminal 6 for Channel 6 NOTE Locations with excessive electrical noise may produce erratic flow response In that case connect the shield to a reliable earth ground near the sensor or at a junction box instead of terminal 1 in the 770MAX AC Power In 1000 65 isolated 12 VDC power supply or equivalent 4 D N for Ch 6 for Ch 5 1000 67 Input Kit ar _ OCOOOANDOABRWN Thornton 770MAX Extension cable 3 conductor with shield 20 AWG Belden 9364 or equivalent 1000 ft 305 m maximum Appendix B Pulse Flow Input Setup 39 Non Magnetic Impeller Flow Sensors Data
60. ity Conductivity is expressed in siemens per centimeter S cm or siemens per meter S m Be careful to select the desired units as they can be confused easily These measurements can be displayed with a unit multiplier in front of the units e M mega 1 000 000 K kilo 1 000 m milli 0 001 u micro 0 000001 or none Total Dissolved Solids TDS may be inferred and displayed based on conductivity resistivity data TDS is the concentration of sodium chloride or other conductive Chapter 5 substance corresponding to the measured conductivity Salinity is the same as TDS specifically for sodium chloride Both are given in units of parts per billion ppb parts per million ppm or parts per thousand ppk as abbreviated on 770MAX The default setting of 1 0 for the TDS Factor provides conversion based on the conductivity of sodium chloride at 0 462 ppm per uS cm with non linear corrections at very low and very high conductivities The TDS factor may be changed to provide conversion for other substances It is a multiplier on the sodium chloride conversion Values for other materials are given in the table below normalized to NaCl These values adjust the TDS value for the actual conductivity of the materials in the table Different values are needed for measurements involving ion exchange calculations see below Material TDS factor KCI 1 0786 Call 0 8839 CaCO 0 8407 NaOH 0 3480 Total Dissolved
61. ity requirements use series 1XXX 70 patch cords Standard Patch Cords 1 ft 0 3 m cord 1001 79 5 ft 1 5 m cord 1005 79 10 ft 3 m cord 1010 79 15 Tt Rue re TEE 1015 79 BEN EAR CO diia A is A 1025 79 ebe E Delt O E 1050 79 AA E 1100 79 190771 45 6 iM CONG ii e a 1115 79 LOMA MC e e e Seed 1120 79 ERD Mc o ht e me o e een 1130 79 Ozone Sensor Patch Cords DARDO CO tai 1005 70 OA let EE 1010 70 CA BEE 1015 70 25 fE 7 6 M Clic id 1025 70 HO Tt 15 MM CO EE 1050 70 1 00 ft 30 5 M card nennen dado 1100 70 E WEE 1115 70 200 1 61 DOUT eege ale iii 1120 70 A E 1130 70 Rear cover for wall mounting and sealing ooooconoccc nonccccnnoncnonanancnnnornnnnnnon cnn rnnr cnn rra n rr rnnn rra 1000 69 Cable Grip Kit for sealing 1 2 conduit hole entrances for 2 patch cords to rear cover 1000 80 or other enclosure with large grommets to pass modular connector of patch cord Pipe mounting bracket for 2 pipe EE 15540 Rach cord extension 5 ft 1 5 mM eee ii 1005 87 Patch cord extension 15 Tt 4 5 M 822er einen 1015 87 Connector for patch Cord evtenslon ron nn rnrcnrnn cnn carac 25320 12 VDC Power Supply for 1 or 2 pulse input flow sensors powered by 85 265 VAQ 1000 65 Pulse input flow sensor kit required for some pulse flow Sensors oooonioocccccnncconococcccnnnonnnnnrncconanos 1000 67 Automatic Smart Calibrator kint 1875 Smart pH VP preamp 1 m cable for pH electrode wi
62. l to this number the output signal will be set to its maximum value Num of Decades logarithmic scaling only Select the number of decades for the scale from 1 to 6 e g 1 to 100 is two decades When using range 2 activate auto range only Use the up down arrow keys to select the relay or discrete output to activate when the high limit of the low range has been exceeded then press Enter On fault set If the sensor or measurement fails the system can failsafe to either the minimum min or maximum max signal level Calibrated Displays the output s most recent calibration date Chapter 4 Current Out Displays the actual current mA being output SETPOINTS The Setpoints Menu is used to define measurement limits or alarm conditions You can set high and low limits for any measurements plus USP and EP limits for conductivity and a reset limit for total flow measurements When the measurement value is higher than a high setpoint or lower than a low setpoint an alarm condition exists Setpoint alarm conditions are indicated by a flashing measurement reading when in display mode Also a relay or digital output can be activated when a setpoint is exceeded USP and EP type setpoints provide a high alarm used for pharmaceutical water monitoring with non temperature compensated conductivity measurements USP United States Pharmacopoeia section 645 and European Pharmacopoeia require that non temperature compen
63. lay an error message when the lamp operating time has exceeded the set limit default Lamp Limit is 4500 hours A new lamp should be installed at this time refer to the 5000TOC Sensor instruction manual 84445 for details of how to do this 14 Using Menus To view time remaining on the UV lamp set the lamp limit or reset the date access the TOC menus as described above Press Page Down until the lamp parameters are displayed The Lamp Remain value is the number of hours remaining until reaching the Lamp Limit The Lamp Remain value cannot be directly adjusted or changed When a new lamp is installed enter the current date into the Lamp Reset field on the second line of the display When this new date is entered the Lamp Remain value will automatically reset to the Lamp Limit value The Lamp Limit is the number of hours for the lamp to operate before the 770MAX warns that the lamp may be wearing out The user can set the Lamp Limit from 400 to 9999 hours The factory default setting is 4500 hours NOTE The UV lamp should be turned off when not making TOC measurements in order to save lamp life Auto Start TOC only To view or set the Auto Start feature access the TOC menus Press Page Down until the Auto Start option appears If Auto Start is set to yes the TOC sensor will automatically start to make TOC measurements at power up Auto start can be set to no so that the user can prevent the automatic startup of the TO
64. ll as scaling analog outputs e Setpoints define values type high low USP and total flow reset and assigned relay or digital output e Relays define relay control action e Display Setup customize display Security enable password protection e Diagnostic access a series of diagnostic testing routines e RS232 Setup format the digital data output parameters Network set up information for connection to network Reset return settings to default values or reset total flow e Tech Support telephone and facsimile numbers for assistance e Set Hold Time freeze the current relay and analog outputs e Other Menus access to less commonly used menus Set Date Time enter date and time Software Revs display revision of software View Total Flow display total flow measurements with high resolution Print Config print current setup information problems installed Chapter 4 Smart Sensors save clear or edit smart sensor data in sensor s memory Set Unit Name enter descriptive name for this instrument Lost Passwords retrieve lost passwords Service Only for use by Thornton Service personnel only Access To access the Main Menu press Menus If security is active a prompt for a password will appear Press the up or down arrow key to step through the sub menus Press Enter to select a menu NOTE Access to menu functions can be passwo
65. ll help you understand the operating system and how to use the display and keypad for data entry The following chapters provide detailed information on using the 770MAX Chapter 4 Using Menus understanding the menu system options and configuration for your applications Chapter 5 Making Measurements understanding the different types of measurements available cell constants temperature compensation and calibration For help diagnosing and resolving measurement problems see Chapter 7 Troubleshooting OPERATING MODES The 770MAX has two operating modes e Measure used to present measurement data the instrument will usually be in this mode e Menu used to set up the system for your specific applications and access all other operational features Measure Mode The 770MAX can calculate and display up to 16 different measurements simultaneously In display mode these measurements are displayed in groups of four and are easily scrolled manually or automatically Channels vs Measurements The 770MAX has six numbered input channels to which sensors can be connected Four can be used with Smart Sensors The remaining two can be used for pulse flow sensors only Channels are numbered 1 through 6 and are identified by the type of sensor connected The input from any channel can be used to calculate and display a variety of measurements depending on the type of sensor Measurements are assigned letters A up t
66. llows and local wiring codes permit NOTE To avoid confusion when patch cords are unplugged label each cord near the instrument with channel number and sensor identification CAUTION Do not cut or shorten patch cords They use very fine gage shielded conductors not suitable for screw terminals or splicing Do not extend patch cords using computer network cables since they provide only 8 of the 10 conductors needed by 770MAX and will damage the modular jacks A break in a continuous patch cord run such as near an instrument cabinet exit can be provided using a 5 ft 1 5 m or 15 ft 4 5 m extension cord and connector See Chapter 8 Accessories See the appropriate sensor instruction manual for detailed information regarding installation and use Smart Sensors used with the previous generation 770PC instrument are not compatible with 770MAX due to signal processing and connector differences Where it is desired to update existing sensors for use with 770MAX consult Thornton CAUTION Route all sensor and output signal wiring away from power and switching circuit wiring to minimize noise pickup and interference Note The 770MAX has inputs for four smart sensors but supports a maximum of two TOC sensors Two or three other smart sensors of any type can be used with TOC sensors Pulse Flow Sensor Connections In addition to Smart Sensors two pulse flow sensors may be connected at terminals 6 and 7 on TB2 See Appendix B
67. log Outputs Connections for analog outputs are on TB3 and TB4 if specified Note that connections use common terminal 18 for analog outputs 1 and 2 and common terminal 17 for analog outputs 3 and 4 with similar wiring for analog outputs 5 8 if used Analog outputs are self powered and have a maximum load capacity of 500 ohms CAUTION Do not connect analog outputs to circuits supplying power They are already powered Chapter 2 INITIAL START UP When power is first supplied to the 770MAX a message similar to the following will be displayed kk kk kk kk kk kk kk kk kk kk Thornton Inc vX XX kk kk kk kk kk kk kk kk kk kk The second line indicates the instrument main software version After initialization the display will go to measurement mode Display Contrast Adjustment 775 LXX LCD display models only Depending on ambient lighting and temperature conditions some adjustment of the LCD display contrast may be needed Allow the instrument to warm up to operating conditions before making an adjustment Loosen the two captive front panel screws and lift the front panel off Using a fine screwdriver adjust the small potentiometer on the left side below the display to obtain the desired contrast Replace the front panel a O O AQ rear panel terminal boards Chapter 2 Installing the 770MAX CHAPTER 3 GETTING STARTED Please read this chapter for an overview of the 770MAX It wi
68. m 10 uS cm to 200 000 uS cm 50 Constant 2 E Cell 10 uS cm to 1 0 S cm 4 E Cell 10 uS cm to 800 000 uS cm TDS covers equivalent conductivity ranges Concentrations HCI 0 15 NaOH 0 13 H SO 0 20 by weight 1 to 15 pH 1500 to 1500 mV 40 to 200 C 40 to 392 F with Pt1000 RTD or Pt100 RTD Sensor range in GPM LPM m hr Hz 0 5 to 4000 Hz Sensor range in psi bars kPa mmHg kg cm inches feet 0 1 Constant 2 E Cell 10 Constant 2 E Cell Sensor range in gallons m liters full psi inches feet 0 15 000 ppb with auto ranging equivalent ppm g L mg L saturation ranges 0 5 000 ppb 0 5 00 ppm or equivalent g L ranges Sensor range in gC L ppmC ppbC pptC total flow rejection recovery sum difference ratio ppm gallons total grains calc pH CO2 Automatic referenced to 25 C for Resistivity Conductivity Percent Rejection and TDS Field selectable for standard high purity Thornton Light cation ammonia ETA power industry isopropyl alcohol glycol or Light 84 special microelectronics applications pH temperature compensation for Nernst electrode output effects plus adjustable solution temperature compensation for high purity water ionization effects referenced to 25 C Dissolved oxygen and dissolved ozone temperature compensation for membrane permeability and oxygen solubility Dissolved oxygen compensation for atmospheric pressure during air calibration using barometer in preamp Pr
69. n risk of electric shock On the instrument indicates Caution refer to accompanying documents On the instrument indicates There is alternating current present TABLE OF CONTENTS CHAPTER 1 INTRODUCTION inundaba 1 CHAPTER 2 INSTALLING THE 770MAX une 2 UnDackINO enano 2 Instrument DESCMPUO EE 2 a EE 3 Panel MU A a 3 Pipe OUI Es acto oa 4 Wall Mount and Rear COVE lassen iin 4 Connections EE 4 at va Se 4 AMAS nas 5 Ferrite Bead Installation ces 5 Pulse Flow Sensor GOMecioAS sio 5 Other Connections riranna a Ee 6 ail ER e EE 7 Display Contrast GESEIS 7 CHAPTER 3 GETTING STARTED a eaa aaa aE aaa aa A A aa aan aa Aa EARE ERNEA 8 Operating Oli 8 MESSI e e EE 8 Menu ModE aaa 8 Using the Display and Kevpad en 8 DISIA EE 8 ASEN SFe 8 AAE EAA re N E TTT 9 Data EI saco 9 CHAPTER 4 USING MENUS geess ee 11 FOCO ts 11 ME PA A A A a TAARE Ei 11 EE 11 Ee eege ee he Ee nad 11 Measurement MO SS 11 MESS UTE ERA AAA AAA AA TRE 11 A E 12 MS EE 12 NEE a1 SEEN a E REHRSNETRUHLRENERWERAR KENLHER KAHRER ER he ieiad e eshte baskiect feast et anu te cut 12 e nl areas 13 COMPON A A A a AAA AAA 13 A en EE 13 IPR EE 13 TEMP ele EE 13 Pressure OU td A A A A 13 OSONA AAA E AAA ADAN 13 MAS eds 13 Pipe ID flow only 2 coda tddi 13 External Gel E 13 TDS PACO A A A A A acini Rielaces A E A E AE AE 13 Tank Helghten seele eek 14 EE Ee 14 TIE Measurement 14 USS ADS E 15 Calibrate Meni E 15 Ae Re 15 SEIPOINIS ui tt EE 17 A
70. n of water is significant It references the pH to 25 C In all other applications leave the STC value at zero See Chapter 5 Making Measurements Chapter 4 IP Special pH sensors only The isopotential point IP should be left at 7 0 pH for conventional pH electrodes Temp Source The following options are available for the source of the temperature used for temperature compensation this channel fixed or other channels This channel This Ch temperature sensor uses the sensor s built in Fixed uses the same value calculations usually 25 C for all If the temperature sensor is located on another channel use the up arrow to scroll through the channels and select the desired one Pressure Source For barometric pressure compensation of dissolved oxygen calibration only the following options are available This Channel Fixed other channels Resolution Resolution is the number of digits that will be displayed to the right of the decimal point The available options are auto 1 1 01 and 001 Max PSI pressure amp level only Enter the full scale pressure value for this sensor Pipe ID flow only Flow velocity measurements in ft sec require the inside diameter of the pipe in which the sensor is installed for calculations Enter the precise inside diameter in inches External Flow Reset flow only If it is desired to reset the flow totalizer from external contacts select Discr
71. nds of pH measurement when appropriate sensors are provided It can also be configured with an alarm on the difference between them as a diagnostic The calculated pH can provide a good standard for one point trim calibration of the electrode pH measurement when sample conditions are within the ranges noted above Carbon dioxide may be calculated from cation conductivity and degassed cation conductivity using tables from ASTM Standard D4519 The 770MAX has these tables stored in memory which it uses when selected in the Measurements Specific Conductivity NH OH Na H Cl HCO R NH Cation Exchanger R Na menu by choosing units of pbCO2 or pmCO2 for parts per billion or parts per million The display will call for a secondary channel which must be measuring degassed cation conductivity on the same sample Set both measurements to the Cation temperature compensation mode Total anions as chlorides or sulfates may be readout on a degassed cation conductivity sample using tables from ASTM Standard D4519 The 770MAX has these tables stored in memory which it uses when selected in the Measurements menu by choosing units of ppbCl ppmC pbSO4 or pmSO4 for parts per billion or parts per million chlorides or sulfates Conductivity is non specific and cannot determine the actual anions present it merely converts the conductivity value as ifthey were all chlorides or all sulfates Set the tempera
72. nience for setting the dates of calibration Time Enter time in hours minutes and seconds hh mm ss Date Enter date in month day and year format mm dd yy Software Revs Displays the engineering revision numbers of the currently installed system circuit boards main measurement display option View Total Flow Displays any total flow measurements by channel Use the up down arrow keys to select the channel to display then press Enter Print Configuration A computer or printer can be used to record all setup information If a device is connected to the RS232 output press Enter to print See 770MAX Service Manual information 84373 for connection Smart Sensors The Smart Sensors Menu is used to save clear or edit data stored in the Smart Sensors memory Use the up down arrow keys to select the desired option then press Enter Save Data Select the channel to which the desired Smart Sensor is connected then press Enter to save Chapter 4 Clear Data This function restores factory sensor calibration data replacing any user calibration Select the channel to which the desired Smart Sensor is connected then press Enter to clear Edit Data This option is for use by Thornton Service Personnel only and requires a service password Set Unit Name This feature is especially useful when more than one unit is used Enter the name or location of this unit up to 20 characters The unit name is di
73. o P Note that there are only six input channels but 16 measurements available Each sensor can be used for multiple measurements Measurement Types The measurement types available depend on the type of sensor connected After the sensor has been connected a unit of measurement can be defined 8 Installing the 770MAX The 770MAX accommodates the following sensor types e Resistivity Conductivity with temperature e Temperature Pressure e pH with temperature e TOC e Dissolved Oxygen e Dissolved Ozone Flow Tank Level Voltage ORP and miscellaneous others Menu Mode Menu mode allows you to set up the 770MAX specifically for your applications The Main Menu consists of many sub menus in a loop which can be scrolled for easy access These sub menus allow you to Define measurement parameters Define and set outputs setpoints and relays Calibrate sensors and the meter Display error messages Diagnose problems Access security and maintenance functions Each menu may consist of one or more screens or pages where you define the desired settings The remainder of this chapter describes how to use the keypad and display to define settings and enter information in menu mode The next chapter Chapter 4 Using Menus details the content of each menu USING THE DISPLAY AND KEYPAD The 770MAX operating system is very straightforward but understanding a few rules will mak
74. on is the Standard compensation routine referenced to 75 C This compensation may be preferred when measuring Ultrapure Water at an elevated Chapter 5 temperature Note Resistivity of compensated to 75 C is 2 4818 Mohm cm Ultrapure water Cation compensation is used in power industry applications for specific conductivity using ammonia or ETA ethanolamine water treatment and cation conductivity measurements with acidic samples It takes into account the effects of temperature on the dissociation of pure water in the presence of these bases and acids Glycol 1 compensation matches the temperature characteristics of 100 ethylene glycol Compensated measurements may go well above 18 Mohm cm Glycol 50 compensation matches the temperature characteristics of 50 ethylene glycol in water Compensated measurements using this solution may go above 18 Mohm cm Alcohol compensation provides for the temperature characteristics of a 75 solution of isopropyl alcohol in pure water Compensated measurements using this solution may go above 18 Mohm cm Linear compensation adjusts the reading by a factor expressed as a per C deviation from 25 C Use only if sample stream has a well characterized linear temperature coefficient The factory default setting is 2 00 C Light 84 compensation matches the high purity water research results of Dr T S Light published in 1984 Use only if your institution has standardized on t
75. onics are required It is strongly recommended to use the Automatic Smart Calibrator Kit Part No 1875 For details regarding meter calibration see the Calibrator Kit instruction manual If it is desired to use local standards lab equipment provide a decade box voltage source and frequency source with traceable accuracy exceeding meter specifications Obtain the appropriate adapter cable s listed in Chapter 8 Accessories and Spare Parts and refer to Service Manual Part No 84373 for procedures Chapter 6 CHAPTER 7 MAINTENANCE amp TROUBLESHOOTING MAINTENANCE Front Panel Cleaning Clean the front panel with a damp soft cloth water only no solvents Gently wipe the surface and dry with a soft cloth TROUBLESHOOTING CHECKLIST For Technical Support and repair information contact Metter Toledo Thornton Inc 36 Middlesex Turnpike Bedford MA 01730 Phone 781 301 8600 or 800 510 PURE Fax 781 271 0214 E mail service thorntoninc com Also see Service Manual 84373 for more details If the equipment is used in a manner not specified by Mettler Toledo Thornton Inc the protection provided by the equipment may be impaired Review the table below for possible causes of common problems Problem Possible Cause Display is blank No power to 770MAX Blown fuse LCD display contrast set incorrectly Hardware failure Incorrect measurement readings Measurement readings not stable Sensor impr
76. operly installed Incorrect units multiplier entered Temperature compensation incorrectly set or disabled Sensor or meter needs calibration Sensor or patch cord defective or exceeds recommended maximum length Hardware failure Sensors or cables installed too close to equipment that generates high level of electrical noise Recommended cable length exceeded Averaging set too low Sensor or patch cord defective Displayed measurement reading is flashing Setpoint is in alarm condition setpoint exceeded Flashing gt in lower right corner of display A measurement not currently displayed is in setpoint alarm condition Desired measurement letter is not displayed as a possible selection when scrolling through options for analog outputs setpoints etc When replacing a non Smart Sensor cannot clear old sensor information and enter new sensor type Measurement has not been defined define measurements first Go to Measurement Menu e Select desired measurement letter e Select channel none e Select units of none e Go back to channel and select desired channel e Select sensor type and units Cannot change menu settings User locked out for security reasons Data not sent out to serial port Chapter 7 Serial port miswired Baud rate and or parity set incorrectly Maintenance amp Troubleshooting 33 pH SENSOR DIAGNOSTICS The adder and multiplier constants
77. options are Change Lockout Change Password and Lockout Status To select another option after completing any of these options press Page Up to return to this screen and select Change Lockout Enter the master password to change any of the security lockout options Lockout If lockout is enabled users must enter their password to gain access to the menus If disabled no passwords will be required User 1 Select the desired lockout for User 1 The available lockout options are Lockout All Lock Cal Only and Open Cal Only User 2 Select the desired lockout for User 2 Change Password Use to change any of the passwords Chapter 4 Which password to change Select the desired user or master password Master Pass Enter the master password to proceed New password Enter a new 5 character password and press Enter You will then be prompted to re enter the password to confirm it Lockout Status The status fields are for display only Lockout is Displays whether security lockout is disabled or enabled User 1 Displays current lockout option for User 1 User 2 Displays current lockout option for User 2 Time since last access in menus Displays the elapsed time since the menus were last accessed by any user DIAGNOSTICS The Diagnostic Menu is used to run a series of diagnostic testing routines to verify the operation of system components including meter sensors analog output serial port netw
78. ore information regarding the cause of the condition The 770MAX will notify the user if the UV lamp has exceeded its default lifetime displaying this state as an Error The 770MAX will also notify the user if any of the sensor s operating parameters are out of tolerance and will shut down the sensor under adverse operating conditions displaying this state as a Fault LEDs on the sensor also indicate error and fault conditions In an error condition the sensor will still operate but the measured TOC may not be accurate In a fault condition the sensor cannot make 24 Making Measurements measurements Messages displayed in the 770MAX describe the fault or error cause for efficient trouble shooting PH The measured pH of a solution can be displayed in terms of pH units or volts Due to aging in the process pH sensors require re calibration after a period of time The stability of the sensor depends on the nature of the sample solution pressure temperature etc For this reason calibration intervals should be based on experience with the particular application See Chapter 6 Calibrating and Verifying for calibration instructions Temperature Compensation Conventional Nernst temperature compensation is always in effect to correct for the varying output of all pH electrodes with temperature If no temperature sensor is available or temperature compensation is not desired select a fixed temperature as the temperatur
79. ork display keypad flow channels inputs and outputs Use the up down arrow keys to select a component to test then press Enter The indicated test will be performed and the results displayed Press Enter to perform the next test To test another component press Page Up to return to the Diagnostic Menu and select the next component NOTE Some diagnostic tests may normal operation such as analog outputs interrupt For detailed information regarding diagnostic tests see Chapter 7 Troubleshooting RS232 SETUP The RS232 Menu is used to format the data output communication parameters baud parity etc For detailed digital communications information see the 770MAX Service Manual Part No 84373 Using Menus 19 NETWORK The Network Menu will be used to set up a network connection address and type when this function becomes available RESET The Reset Menu is used to clear user programming and return most settings to their default values for the entire system for single measurements or total flow readings by channel Use the up down arrow keys to select the desired option to reset then press Enter The available options are System Measurements and Totalizers System A system reset will Clear and disable all relays setpoints and analog outputs Clear all measurements e Set the serial port to 38 4K baud and even parity The data output is turned off e Turn off display scrolling and
80. ort network display keypad flow channels inputs and outputs To access the Diagnostic Menu 1 Press Menus 2 Press the up arrow key until the Diagnostic Menu is displayed then press Enter 3 Use the up down arrow keys to select a component to test then press Enter The indicated test will be performed and the results displayed 4 To test another component press Page Up to return to the Diagnostic Menu and select the next component 5 After completing the desired diagnostics press Menus twice to exit the menu system and return to display mode CAUTION Some diagnostic tests may interrupt normal operation of analog outputs and relays and could upset related processes Activate the HOLD function before using these diagnostics 34 Maintenance amp Troubleshooting See the appropriate section below for information regarding the specific diagnostic tests Meter Tests Use to test the timers ROM checksum and RAM Tests are performed sequentially press Enter to perform next test Smart Sensors Select a channel to view the raw sensor data actual voltage ohms etc Serial Port On back of meter use a jumper wire to connect TB2 terminals 9 and 10 then press Enter to begin test Network Not currently available Display An automated sequence will test the display of all characters alpha numeric and symbol Press Enter to stop the test Keypad Press any key to test its response the correct name of th
81. r Smart Sensors for flow can be installed on channels 1 e PSI through 4 Pulse type non Smart Sensors for flow can be inches Chapter 5 Making Measurements 25 e feet e full To calculate volume the cross sectional area sq ft must be entered To calculate Full the tank height ft must be entered The maximum pressure reading for the sensor also must be known The Max PSI value is pre programmed into Smart Sensors and is automatically read by the 770MAX DERIVED MEASUREMENTS The following additional measurements can be derived from the results of two or more direct measurements e sum e difference e ratio rejection e recovery e deionization capacity total ppm gallons or grains e watts or volt amps To set up any of the derived measurements first set up the primary measurements which will be used to calculate the derived measurement Define the primary measurements as if they were stand alone readings Then the derived measurement can be defined Difference Measurement by difference allows one measurement to be subtracted from another For example to display the difference between the incoming flow rate and outgoing flow rate of a process stream 1 Setup the measurement for the incoming flow sensor 2 Setup the measurement for the outgoing flow sensor IMPORTANT Use the measurements same units for both 3 Set up a third measurement to display the difference between the two a Sele
82. r not specified by the manufacturer the protection provided by it against hazards may be impaired WARNINGS Installation of cable connections and servicing of this product require access to shock hazard voltage levels Main power and relay contacts wired to separate power source must be disconnected before servicing Main power must employ a switch or circuit breaker as the disconnecting device for the equipment Electrical installation must be in accordance with the National Electrical Code and or any other applicable national or local codes Safety and performance require that this instrument be connected and properly grounded through a three wire power source RELAY CONTROL ACTION the770MAX instrument relays will always de energize on loss of power equivalent to normal state regardless of relay state setting for powered operation Configure any control system using these relays with fail safe logic accordingly PROCESS UPSETS Because process and safety conditions may depend on consistent operation of this instrument provide appropriate means to maintain operation during sensor cleaning replacement or sensor or instrument calibration This manual includes safety information with the following designations and formats WARNING POTENTIAL FOR PERSONAL INJURY CAUTION possible instrument damage or malfunction NOTE important operating information Definition of Equipment Symbols On the instrument indicates Cautio
83. r temperature compensation and or temperature readout To display temperature values as well as using them for compensation set up one measurement for the primary parameter eg resistivity or pH and another for the temperature readout PRESSURE The measured pressure of a solution can be displayed in terms of e PSI kPascal mmHg e bars kg cm inches e feet The maximum pressure reading for the sensor is pre programmed into all Smart Sensors and automatically read by the 770MAX For tank level measurements see TANK LEVEL For difference and ratio measurements see DERIVED MEASUREMENTS FLOW The measured flow of a solution can be displayed in terms of e gallons D m e liter e Hz e GPM m hr e liter min feet second e recovery e ratio e difference installed only on channels 5 and 6 and require entry of their calibration factors in pulses per gallon as the measurement Multiplier Flow measurements require the inside diameter of the pipe for flow velocity calculations In some applications calibration of flow sensors is required for specific piping installations See Chapter 6 Calibrating and Verifying for calibration instructions Totalized Flow is expressed in volume gallons m or liters After a measurement with total flow units has been defined 770MAX will keep a running total of the volume flowing past the sensor There are three ways to clear the total flow value
84. rd protected for security If you are locked out you can still review settings but not change them Press any alphanumeric key as the wrong password and press Enter to review menu settings Exit After completing all data entry for one menu option Press Page Up until you return to the Main Menu to select another menu option or Press Menus twice to save settings exit the menu system and return to display mode If no keys are pressed for 5 minutes the Measure mode will resume automatically and settings will be saved To exit menus and discard any changes made Press Menus once and then press 1 to exit the menu system revert to the prior menu settings and return to display mode MEASUREMENTS MENU The Measurements Menu is used to set up the parameters for each measurement Install all sensors before using this menu Smart Sensor data will be read by the 770MAX and automatically entered into the system as appropriate For detailed information regarding specific measurements see Chapter 5 Making Measurements Measurement Sixteen different measurements may be defined in system memory Each measurement you define will be identified by a letter A through P which will become a line on the display in the normal measuring mode Using Menus 11 When a Smart Sensor is first connected the 770MAX automatically assigns to it the next one or two available measurements depending on the type of sensor Measurem
85. riate section below for calibration procedures After completing the desired calibration press Menus twice to exit the menu system and return to display mode SENSOR CALIBRATION The 770MAX uses two calibration constants to calculate measured values from the sensor s linear output signal These constants referred to as the adder and multiplier are pre programmed into all Smart Sensors and are automatically read by the 770MAX They can be viewed in the Measurements Menu The adder also known as zero or offset is an indicator of how far the sensor is offset from the nominal zero point The multiplier also known as cell constant slope or span is an indication of the sensitivity of the sensor Sensors can be calibrated at either one or two points A one point calibration will calculate either a new adder or multiplier factor depending on the type of sensor see chart below A two point calibration will recalculate both the multiplier and adder factors Chapter 6 sensor type factor calculated by one point calibration resistivity conductivity multiplier TOC user selectable user selectable user selectable dissolved oxygen dissolved ozone pH or ORP adder flow multiplier temperature adder pressure tank level adder Sensor calibration requires accurate standards in the range of expected measurements For a one point calibration only a single standard is needed For a two point calibration two standards of known valu
86. rovided depending on the model purchased Each output can be programmed to operate as a normal i e linear bi linear auto range or logarithmic output Outputs can be programmed to activate a relay or digital output auto range only and to send either a minimum or maximum value if a sensor failure is detected See Chapter 2 Installing the 770MAX for connection information Using Menus 15 Analog Use the up down arrow keys to select the desired output 1 through 4 or 8 then press Enter to continue with setup for that output Complete all setup for one output before starting another To set up the next output press Page Up until you return to the initial analog output screen and then select another analog output number Measurement Use the up down arrow keys to select the letter of the measurement that will use this analog output then press Enter Scaling Type The following types of output scaling are available normal bi linear auto range and logarithmic Normal scaling provides a linear 4 mA or O mA to 20 mA output Low and high measurement values can be entered to correspond to those outputs Bi linear scaling provides two scaling ranges for a single linear strip chart usually a wide measurement range at the high end of the scale and a narrower range with high resolution at the low end In addition to entering low and high values a mid range scaling value must be defined For example a user in the
87. ry e grains e ppm Gallons e Calculated pH e CO2 Cl SO4 Calculated pH and CO units are applicable only to measurements on power plant samples appropriately conditioned to obtain these parameters See Chapter 5 Making Measurements for details If ratio or difference is selected press the up arrow to return to the Sensor Input field and select the two channels for comparison Then continue with the remainder of the Measurements Menu Some units require secondary selections The most common Resistivity Conductivity Flow is the units multiplier For example if Resistivity is selected e resistivity in ohm cm e GPM an appropriate units multiplier must also be selected i e M conductivity in S cm or S m e gallons mega 1 000 000 K kilo 1 000 m milli 0 001 u Cor F m3 hr micro 0 000001 or none e total dissolved solids e Hz HCI m3 Name e NaOH e liter Each measurement can be given a custom name for easier H2504 e liter min identification up to six alphanumeric or symbol characters ppb or ppm Ci feet second If a name is not entered the measurement will be identified d by the measurement letter and sensor channel When a ppb or ppm SO name is first entered it is automatically duplicated to all Temperature other measurements using the same sensor channel These Pressure e may be overwritten as desired PSI SE Note See Chapter 3 Getting Started for instructions in k
88. s The Auto Balance Limit can be set from 0 to 20 The Auto Balance Limit is the maximum percentage difference allowed between the two Chapter 4 conductivity sensor readings when the lamp is off and the sensor is in Auto Balance mode In the next screen the time until the next Auto Balance is displayed This value cannot be directly adjusted or changed The user can indirectly change this value if they change the Auto Balance Time interval The Auto Balance Hold function allows the user to hold all relays and analog outputs and displayed measurements at the current state or value during an Auto Balance cycle You may also select to perform an Auto Balance immediately if AutoBal Now is set to Yes The factory default values for the Autobalance functions are as follows AutoBal Yes AutoBal Time 4500 hr AutoBal Limit 7 AutoBal Hold Yes AutoBal Now No Sensor Key Lock TOC only To view or set the Sensor Key Lock feature access the TOC menus Press Page Down until the Sensor Key Lock option appears This function can be used to avoid inadvertently turning the UV lamp off under normal operating conditions Use the Up Down arrow keys to toggle between Yes and No and press Enter to save the change Selecting Yes will prevent the lamp from being turned off at the sensor The factory default value is No Conductivity Limit TOC only To view or set the Conductivity Limit feature access the T
89. sated conductivity of pharmaceutical waters must be below a limit from tables based on the temperature of the sample In other words pharmaceutical requirements temperature compensate the limit rather than the measurement The 770MAX has these pharmaceutical limit tables in memory and automatically determines the conductivity limit based on the measured temperature USP and EPWFI Water for Injection setpoints use Table 4 1 The limit is the conductivity value corresponding to the 5 temperature step immediately below or equal to the measured temperature value EP Highly Purified Water limits are identical to EP WFI limits EP PW Purified Water setpoints use Table 4 2 The limit in this case is the conductivity value interpolated for the measured temperature 770MAX takes care of this automatically The pharmaceutical setpoint value entered into the 77OMAX is the percentage safety margin below the limits to activate the setpoint For example the USP table conductivity limit at 15 C is 1 0 uS cm If the setpoint value is set at 40 then the setpoint will activate whenever the conductivity goes above 0 6 uS cm at 15 C To configure a pharmaceutical setpoint use the normal procedure but select USP EPWFI or EP PW instead of High or Low Temperature C Conductivity Limit uS cm Chapter 4 1 8 1 9 2 1 2 2 2 4 2 5 2 7 2 7 2 7 2 7 2 9 3 1 Table 4 1 USP Section 645 Stage 1 EP WEI Water for Injection and EP
90. sensors are functional only in the highest 75 of flow range NOTE Signet 525 Series sensors are not compatible with 770MAX pulse input CAUTION MISWIRING MAY DAMAGE SENSORS Flat Paddlewheel Magnetic Flow Sensor Thornton 770MAX Extension cable 2 conductor with shield 22 AWG Belden 8451 or equivalent 1000 ft 305 m maximum PFA Vortex Flow Sensors Thornton 317 Series Thornton 317 100 to 317 103 AC Power In CAUTION MISWIRING MAY DAMAGE SENSORS 1000 65 isolated 12 VDC power supply or equivalent 4 o N x OOONDVIPOD PFA Vortex Flow Sensor Thornton 770MAX Extension cable 3 conductor with shield 20 AWG Belden 9364 or equivalent Appendix B Pulse Flow Input Setup 43 Flat Paddlewheel Hall Effect Flow Sensors Burkert 8030 Series 5VDC Thornton 33901 33935 CAUTION MISWIRING MAY DAMAGE SENSORS TB2 4 2 Terminal 1 3 Terminal 3 Terminal 2 6 forch6 7 forCh5 8 9 Burkert Hall Effect Flow Sensor 10 Thornton 770MAX Sanitary Turbine Flow Sensors Sponsler Series Thornton 33441 33444 to 33450 CAUTION MISWIRING MAY DAMAGE SENSORS AC Power In 1000 65 isolated 12 VDC power supply or equivalent 4 DO N Bed P S AT SE Orange SIG OUT u U COANOOARWD SANITARY TURBINE FLOW SENSOR Thornton 770MAX Extension cable 3 conductor with shield 20 AWG Belden 9364 or equivalent 160 ft 50 m maximum
91. set the display order to automatic e Read Smart sensors and set up measurement channels as if you plugged in a new sensor It will not change the unit number Press Page Down to reset the system Measurements A measurement reset will reset a channel to its default modes and clear all setpoints relays and analog outputs that apply to that channel Select the channel to reset then press Enter Totalizers A totalizer reset will clear the total flow or deionization capacity reading for a channel and set it to zero Select the channel to reset then press Enter This may also be done by remote contacts TECH SUPPORT Displays the telephone e mail and facsimile numbers for Thornton Technical Support SET HOLD TIME Use a hold time to freeze the relay and analog outputs so that alarms are not triggered during calibration or other service procedures Normal relay and analog output operation resumes when the set period has elapsed or when the hold time is reset to zero 20 Using Menus Enter a hold time in minutes 1 to 99 then press Enter OTHER MENUS The Other Menu is used to access less commonly used features including e Set Date Time Software Revisions e View Total Flow e Print Configuration e Smart Sensors e Set Unit Name Lost Passwords e Service Only Set Date Time Use to enter the correct date and time Note that the internal clock does not run when power is off It is only a conve
92. sing Menus other two settings For example a high value of 1000 uS cm with 3 decades would give a range of 1 10 100 1000 uS cm Do not use logarithmic scaling with parameters that may have negative values such as ORP temperature or pH Low Value signal level Select 4 mA or 0 mA as the low value of the output signal 0 4 mA scaling limit Enter the measurement value that will correspond to 4 mA or 0 mA IMPORTANT Be sure to select the appropriate units multiplier M mega 1 000 000 K kilo 1 000 m milli 0 001 u micro 0 000001 or none e g M for megohm cm or u for uS cm Whenever the measurement is less than or equal to this number the output signal will be set to its minimum value If the output scaling type is auto range the low value is always zero Note Output signals can be inverted by setting the minimum value higher than the maximum For example to obtain an inverted 1 7 pH signal for control of caustic feed set the 0 4 mA limit to 7 and the 20 mA limit to 1 Mid Bi linear scaling only Enter the measurement value that will correspond to the middle of the range 10 or 12 mA Then select the appropriate units multiplier M mega 1 000 000 K kilo 1 000 m milli 0 001 u micro 0 000001 or none 20 mA scaling limit Enter the measurement value that will correspond to 20 mA Then select the appropriate units multiplier Whenever the measurement is greater than or equa
93. splayed whenever exiting menus and appears in configuration printout calibrator certificate etc Lost Passwords To recover lost passwords record the codes displayed on screen and then call Customer Service for assistance Service Only These are service password protected functions for use by Thornton Service Personnel only Chapter 4 Using Menus 21 CHAPTER 5 MAKING MEASUREMENTS INTRODUCTION After all menu options have been set measurement readings are viewed in the display mode If measurements have not been set up using the menus default values will be used to calculate and display readings Available measurement types and units are given in Chapter 4 Using Menus See the appropriate sensor manual for complete sensor installation and use instructions NOTE Smart Sensors used with the previous generation 770PC instrument are not compatible with 770MAX due to signal processing and connector differences Where it is desired to update existing sensors for use with 770MAX consult Thornton Displaying Measurements To return to display mode from menu mode press Menus twice to exit the menu system and return to display If the 770MAX is left in menu mode it will automatically default to display mode after 5 minutes of inactivity 770MAX can calculate and display up to 16 different measurements in groups of four Scroll through measurements one at a time by using the up down arrow keys or in groups of four by using t
94. t a new measurement letter b Select the sensor input channel to which the flow sensor is connected c Select units of ppm gallons ppmG or grains gr d Select the sensor input channel to which the conductivity sensor is connected for the on Ch_ setting e Complete the remaining menu options including TDS Factor See RESISTIVITY CONDUCTIVITY TDS section earlier in this chapter In the measure mode all three measurements will be displayed flow conductivity and deionization capacity Note For comparison of units 1 grain 17 12 ppm gallons Watts or Volt Amps VA When the 770MAX uses two or more of the Smart Signal Adapters part no 1000 xx it is possible to calculate Power units in Volt Amperes VA or Watts W This simple multiplication routine is only available if at least two channels are connected to Smart Signal Adapters One channel must have Volts and the other Amperes Amps selected as their unit of measure When configuring the third measurement where VA or W units is selected one of the two channels connected to the Smart Signal Adapters must be selected as the sensor input When doing so the display will show the next channel connected to a Smart Signal Adapter This will show up on the third line of the display to the right of the Units Watt or VA The 770MAX allows the option of accepting the channel or selecting None If None is selected the 770MAX will not perform the m
95. t kt 07355 S Liquid crystal display Replacement bn 07356 Relay option kit to convert model 775 _ _0 to 775 __1 zunsesenseeennernnnnnnnnnnnnnenn nennen nn nennen 1000 91 58 079 002 Analog output amp relay option kit to convert 775 _ _0 to 775 __2 zenseseneesennennnnnnnennnn nenn nennen 1000 92 58 079 003 Main PCB Replacement kint 58 091 010 Measurement PCB Replacement kt 58 091 011 AC Power Supply Replacement kt S 58 091 012 DC Power Supply Replacement Kit ooococconccocccccoconccnconconconcnnnnnnnnnnnnnnnnnnnnnnnnconnnnrnnnnnroninaranins 58 091 013 Firmware Update Tool Kit Use for multiple updates 91006 58 079 015 Firmware Update Kit IC s One required for each 770MAX Update 91007 58 079 016 Recommended Spare parts Chapter 8 Accessories and Spare Parts 37 APPENDIX A SETUP PARAMETERS MEASUREMENT PARAMETERS RECORD Photocopy this form for each measurement programmed into the 770MAX Unit Name Date Sensors Installed Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 Chan 6 Measurement A P Sensor Input Channel Sensor Type Units Name Multiplier S N S N S N S N S N S N Adder Averaging Temperature Compensation STC pH only Analog Output 1 4 or 8 Output Type Setpoint 1 16 Setpoint Value Setpoint Type Relay 1 4 Time Delay Hysteresis Value 38 Cal Date Cal Date Cal Date Cal Date Cal Date Cal Da
96. te IP pH only Temperature Source Resolution Max PSI pressure only Pipe ID flow only TDS Factor conductivity resistivity 8 DI Capacity only Tank Height tank level only Area tank level only On Failure Set Output Setpoint Activates If Sensor Error Relay State External Clear Setup Parameters Appendix A APPENDIX B PULSE FLOW INPUT SETUP The 770MAX has flow inputs for 4 Smart sensors and 2 pulse input sensors Smart sensors connect to channels 1 4 using a patch cord and have their precalibrated values stored in NVRAM which are automatically communicated to the 770MAX when connected Power for Smart sensors is provided through the patch cord and connector and no further setup is required Covered in Appendix B is the installation of flow sensors to the pulse flow inputs Channels 5 and 6 Flow constants must be manually entered into the 77OMAX Measurements menu Pulse flow inputs require signals that go below 0 9V and above 3 2V but that do not exceed 5V WIRING Pulse input flow sensors connect directly to 770MAX channel 5 and 6 input screw terminals with no patch cord Many pulse input sensors require an isolated external power supply and some require additional components as shown in the following figures One external power supply can power two pulse input flow sensors Part 1000 65 provides 12 VDC 0 42 A from 100 to 240 VAC Some pulse input sensors also require a res
97. te _ OOONOVUIPOD Sanitary Turbine Flow Sensor Thornton 770MAX Extension cable 3 conductor with shield 20 AWG Belden 9364 or equivalent 3000 ft 915 m maximum Note Locations with excessive electrical noise may produce erratic flow response and may require the following steps to resolve it Connect the shield of the flow sensor cable to a reliable earth ground instead of terminal 1 on TB2 Ground the flow sensor body to a reliable earth ground Appendix B Pulse Flow Input Setup 41 Internal paddlewheel Flow Sensors Proteus PS600 series Thornton 33286 CAUTION MISWIRING MAY DAMAGE SENSORS AC Power In 1000 65 isolated 12 VDC power supply or equivalent White Green for Ch 6 for Ch 5 Internal Paddlewheel Flow Sensor Thornton 770MAX Extension cable 3 conductor with shield 20 AWG Belden 9364 or equivalent Flat Paddlewheel Hall Effect Flow Sensors Signet 2507 2536 2540 Series Thornton 33282 33285 33287 33298 33305 first colors listed and Flow Technology Sensors with PS 910 QD 0 Hall Effect Pickup colors in parentheses CAUTION MISWIRING MAY DAMAGE SENSORS Flat Paddlewheel Hall Effect Flow Sensor Thornton 770MAX Extension cable 2 conductor with shield 22 AWG Belden 8451 or equivalent 1000 ft 305 m maximum 42 Pulse Flow Input Setup Appendix B Flat Paddlewheel Magnetic Flow Sensors Signet 515 Series Thornton 33282 33285 33287 NOTE Signet 515 Series
98. ted With a low setpoint the measurement must rise at least this percentage above the setpoint value before the relay is deactivated For example a high setpoint is set at 100 and the measurement is currently above this value so the setpoint is exceeded and the relay is activated If the hysteresis value is 10 then the measurement must fall below 90 before the relay is deactivated Enter a percentage value Hysteresis does not function with USP and EP sepoints with resistivity measurement State Relay contacts are in normal state until the associated setpoint is exceeded then the relay is activated and the contacts change Select Inverted to reverse the normal operation e contacts are in abnormal state until the setpoint is exceeded Ext Clear To allow use of an external acknowledge pushbutton to deactivate a 770MAX relay powering an alarm circuit discrete inputs may be used An external input line from the pushbutton connected to Discrete in 1 or 2 can be used to clear deactivate the relay if it has been activated The available options are disabled Discrete In 1 or Discrete In 2 Select disabled if the input line is not used for this purpose Type Displays the type of relay installed Relay is Displays the current status of the relay DISCRETE OUTPUTS Discrete outputs are normally at O V and go to 5 V when a setpoint is exceeded DISPLAY SETUP The Display Setup Menu is measur
99. th VP connechor een 1200 21 Smart pH VP preamp 3 m cable for pH electrode with VP connechor nen 1200 22 Smart pH VP preamp 5 m cable for pH electrode with VP connechor nenn 1200 23 Smart pH VP preamp 10 m cable for pH electrode with VP Connector een 1000 24 Smart ORP AGO preamp 1 m cable for ORP electrode with K9 connector 1200 25 Smart ORP AGO preamp 3 m cable for ORP electrode with K9 connector en 1200 26 Smart ORP AGO preamp 5 m cable for ORP electrode with K9 connector 1200 27 Smart ORP AGO preamp 10 m cable for ORP electrode with K9 connector 1200 28 Smart conductivity adapter cable allows decade box input for calibration sssssesssressnneeseea 1000 82 Smart frequency adapter cable allows frequency input for pulse flowmeters 1000 83 FPOMAX Service TEE Printer 110VAC with serial cable direct RS 232 data logging amp configuration documentation 58079010 Printer 220VAC with serial cable direct RS 232 data logging amp configuration documentation 58079011 Paper 110 mm Thermal 28 m roll for above printers 2 0 2 2 eee eee eeeee cece eeeeeeeeeeeeeeeseeeeaaeeeeeeetesennaeeeees 86043 770MAX Windows Configuration Software CD Rom single user ooooooncccincccinccccoccconcncnncninncanns 58077000 770MAX Windows Configuration Software CD Rom Site License 12 user Max 58077001 36 Accessories and
100. ture compensation mode to Cation CO Degassed Cation Conductivity H Cl OH Degas Unit Cation Conductivity H CI CO HCO3 OH sample conditioning for specific cation and degassed cation conductivity measurements used to calculate pH CO and anion concentration on power plant cycle chemistry samples 28 Making Measurements Chapter 5 CHAPTER 6 CALIBRATING AND VERIFYING The Calibrate Menu is used to calibrate the sensors analog outputs or the meter measuring circuits The 770MAX meter measuring and analog output circuits are factory calibrated within specifications therefore it is not normally necessary to re calibrate them Best sensor performance is normally obtained by using the factory documented calibration constants programmed into Smart Sensors However pH sensors will require periodic re calibration see the pH sensor instruction manual for recommendations Level sensors may require calibration after installation to accommodate the sensor location As a safeguard a hold time may be entered to freeze the current relay states and analog outputs so that alarms are not triggered during calibration procedures CAUTION Hold time will freeze all relays and analog outputs on all measurements not just the measurement being calibrated ACCESS To access the Calibrate Menu 1 Press Menus 2 Press the up arrow key until the Calibrate Menu is displayed then press Enter See the approp
101. ultiplication routine and display 0 000 for this measurement Power Plant Calculated Parameters The following derived parameters are valid only for steam power plant cycle chemistry samples conditioned by a cation exchanger and degasifier as illustrated in the figure following They are not applicable to other samples and would give very erroneous results Because the 770MAX can provide multiple measurements from a single sensor channel it can be configured to display specific cation and degassed cation conductivity plus sample temperature measurements as well as calculated pH and COs measurements Calculated pH may be obtained very accurately from specific and cation conductivity values when the pH is between 7 5 and 10 5 due to ammonia or amines and when the specific conductivity is significantly greater than the cation conductivity The 770MAX uses this algorithm when units of pH_c are selected in the Measurements menu for a channel measuring specific conductivity The display will call for a secondary channel which requires another sensor Making Measurements 27 measuring cation conductivity on the same sample Set the temperature compensation mode to Ammonia and Cation for the specific and cation conductivity measurements respectively Note that if operation goes outside the recommended conditions a glass electrode pH measurement is needed to obtain an accurate value The 770MAX can be configured for both ki
102. viewed in the Measurements Menu can provide valuable preventive maintenance information about pH sensors However the values must not be changed in this menu or the sensor will have to be recalibrated The adder factor zero asymmetry or standardize offset is an indication of how far the sensor has drifted from the nominal zero starting point in pH units It is recalculated after every calibration 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 or a more rapid change in this value is an indication that the sensor should be replaced soon Because 770MAX display is auto ranging when the adder factor is very small it may be displayed in milli pH units with an m prefix following the numeric value In this case the value is very near the nominal zero offset The multiplier slope or span is an indication 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 usually due to aging coating or hot caustic attack of the glass measuring membrane of the sensor A sensor with a multiplier value less than 0 80 should be replaced soon DIAGNOSTIC MENU The Diagnostic Menu is used to run a series of automated diagnostic testing routines to verify the operation of system components including meter sensors analog output serial p
103. wing characters _ If another letter from the same key is desired the right arrow must be used to move the cursor to the next position in the data entry field When a different key is pressed the cursor automatically moves to the next position If a lower case letter is selected the next key pressed will begin the sequence with the lower case The up and down arrow keys can be used to scroll through the entire alphabet If the 770MAX is expecting a numeric entry the first press will yield the number on the key NOTE When many measurements display lines are used response of the display to pressing keys may be slower Data Entry In menu mode each line of the display presents an option followed by a data entry field If a colon follows the field name use the up down arrow keys to scroll through a list of options If an equal sign follows the field name use the alphanumeric keys to enter the required information See Alphanumeric Keys above In most cases numbers are entered as a four digit number followed by a units multiplier The units multipliers are e n nano multiply value by 0 000 000 001 10 u micro multiply value by 0 000 001 10 m milli multiply value by 0 001 10 e _ units multiply value by 1 K kilo multiply value by 1 000 10 e M mega multiply value by 1 000 000 10 Getting Started 9 When the desired option is selected or the alphanum
104. y setting a caret will be displayed after Adder and Multiplier Averaging Averaging or filtering stabilizes measurement readings in applications with rapidly changing parameters or noisy signals The following options are available none low medium high or special The higher the averaging the longer the response time to changes in the measurement For most measurements special averaging is recommended Special averaging uses high averaging for small changes but will respond quickly if a large change is detected Compensation Resistivity conductivity and pH measurements are normally temperature compensated to display equivalent values at 25 C The following types of temperature compensation routines are available standard cation glycol 1 glycol 50 alcohol linear 2 00 Light 84 standard 75 or none For more information regarding temperature compensation see Chapter 5 Making Measurements The source of the temperature measurement may be from the sensor s built in temperature sensor or some other source This information can be entered in a later field STC high purity pH only The solution temperature coefficient STC allows selection of temperature compensation for the ionization of pure water This is in addition to the conventional Nernst temperature compensation which is always active STC is useful for pure water samples with a conductivity of less than 30 uS cm where the changing ionizatio

770MAX Multiparameter Analyzer/Transmitter

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