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ECD T90 Instruction Manual

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I
M
NSTRUCTION
ANUAL
M
T80 U
T
ODEL
NIVERSAL
RANSMITTER
T80 IM Rev. L

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  • Page 1 NSTRUCTION ANUAL T80 U ODEL NIVERSAL RANSMITTER T80 IM Rev. L...
  • Page 2 Screen Map Cal 1 (Offset) using Calibration Solution Auto Cal 2 (Slope) using Calibration Solution Standardize Enter Grab Sample Determined Value (Calibration) Enter Offset, the PV value and associated mV Manual Enter Slope, mV/pH, mV/decade, mV/ppm… Temp Enter measured Temperature Temp.
  • Page 3 PREFACE Thank you for purchasing products from Electro-Chemical Devices, Inc. ECD provides you with the finest liquid analytical instrumentation available. If this is your first purchase from ECD, please read the entire manual before installing and commissioning your new equipment.
  • Page 4 Contents of this manual are believed to be correct at the time of printing and are subject to change without notice. ECD is not responsible for damage to the instrument, poor performance of the instrument or losses resulting from such, if the problems are caused by: •...

  • Page 5: Table Of Contents

    Table of Contents TERMS AND CONDITIONS OF SALE ..........................9 RETURN GOODS POLICY ............................10 UNPACKING THE INSTRUMENT ..........................11 INSTRUCTION MANUAL REVISION ........................... 11 1.0 GENERAL DESCRIPTION ............................. 12 1.1 FEATURES ..............................12 1.2 SPECIFICATIONS ............................. 12 1.2.1 Input specification ..........................12 1.2.2 Input Ranges ............................
  • Page 6 3.1.4 Alpha Numeric Entry..........................22 3.2 MENU STRUCTURE ............................22 3.2.1 HOLD (Output Hold) ..........................22 3.2.2 CAL (Calibration Menu) .......................... 22 3.2.3 CONFIG (Configuration Menu) ....................... 23 3.2.4 INFO (Information Menu) ........................25 3.2.5 SIM (Simulation Menu) ........................... 25 3.2.6 Fault Screens............................
  • Page 7 4.3.1 AUTO Cal using 1, 10, 100 ppm solutions ....................35 4.3.2 AUTO Cal using non-decimal ppm solutions ..................35 4.3.3 Standardize ............................. 35 4.4 S80/DO90 DISSOLVED OXYGEN Calibration Procedures ................36 4.4.1 AUTO Cal using zero ppm solution and Air..................... 37 4.4.2 Standardize .............................
  • Page 8 8.1 S80 Installation .............................. 51 8.1.1 Insertion ..............................51 8.1.2 Immersion ............................... 51 8.1.3 Flow through ............................51 8.1.4 Valve Retractable ............................ 52 8.1.5 Flange fittings ............................53 8.2 S80 Part Number Configurator ........................53 8.3 TRITON® DO80 Sensors ..........................54 8.4 TRITON®...
  • Page 9 8.4.13 Sodium Electrode ..........................64 8.4.14 Sulfide Electrode ........................... 64 8.4.15 TRITON® DO80 ............................64 8.4.16 TRITON® TR6 ............................65 APPENDIX ................................66 A. Auto Cal Buffer Tables ............................. 66 B. T80 HART Menu ............................... 66 D.MODBUS RTU Register Listing ......................... 68 03 (0x03) Read Holding Registers ........................

  • Page 10: Terms And Conditions Of Sale

    TERMS AND CONDITIONS OF SALE ACCEPTANCE. If this writing differs in any way from the terms and conditions of Buyer's order or if this writing is construed as an acceptance or as a confirmation acting as an acceptance, then Seller’s acceptance is EXPRESSLY MADE CONDITIONAL ON BUYER’S ASSENT TO ANY TERMS AND CONDITIONS CONTAINED HEREIN THAT ARE DIFFERENT FROM OR ADDITIONAL TO THOSE CONTAINED IN BUYER'S WRITING.

  • Page 11: Return Goods Policy

    JURISDICTION. All such disputes shall be resolved in a court of competent jurisdiction in Orange County, California. Buyer hereby consents to the jurisdiction of the State and Federal Courts sitting in Orange County. Notwithstanding the above, should either party contest the jurisdiction of such courts, the other party may institute its suit in any court of competent jurisdiction.

  • Page 12: Unpacking The Instrument

    3. Save the original packing material until you are satisfied with the contents. In the event the product(s) must be returned to ECD, the packing material will allow you to properly ship it to ECD. 4. Familiarize yourself with the instrument before installation, and follow proper installation and wiring procedures.

  • Page 13: General Description

    1.0 GENERAL DESCRIPTION The ECD Model T80 transmitter is a single or dual channel, intelligent, multi- parameter transmitter designed for the online continuous measurement of pH, ORP, pION, dissolved oxygen, conductivity, resistivity and turbidity in a general purpose industrial environment. The Model T80 transmitter digitally communicates with any ECD S80 digital sensor, automatically configuring the transmitter’s menus and...

  • Page 14: Output Signals

    Conductivity 2% of range Resistivity 2% of range Turbidity 2% of reading Temperature ± 0.3°C 1.2.4 O UTPUT IGNALS Non-isolated 4-20 mA output (standard, one per Channel), Fault Condition: 3.5 mA, 22 mA or none Modbus RTU (standard) HART® (optional) 1.2.5 C ONTACT ELAYS...

  • Page 15: Model Codes

    1.3 M ODEL ODES Model T80- (S80) S80 Digital Sensor, pH, ORP, pION, DO, DO90 ppb DO, Conductivity, Resistivity Channel 2 Triton® DO80 Optical DO Internal Preamp, Digital to S10/S17 pH, ORP, pION (+mV, -mV, 100K TC, SG) Internal Preamp, Digital to SGTC Conductivity/Resistivity (CSX2 or 2 electrode contacting ) Internal Preamp, Digital to SGTC Dissolved Oxygen, (Steam Sterilizable Products) Triton®...

  • Page 16: Installation

    2.0 INSTALLATION 2.1 MOUNTING Mount the T80 in a location where there is easy access to the analyzer and sensors. Install the system in an area where vibrations, electromagnetic and radio frequency interference are minimized or absent. Do not mount in direct sunlight or areas of extreme heat (temperature >...

  • Page 17: Wiring

    Panel Mounting Cut Out: 5.35” x 5.35” (13.6 cm x 13.6cm) 2.2 WIRING Electrical wiring should only be conducted by qualified personnel. See the T80 wiring diagram in Figure 2.2.X Figure 2.2.1 Loop Powered Transmitter...
  • Page 18 Figure 2.2.2 4-Wire Transmitter, 24VDC or /110/22 VAC, MODBUS, Relays/Optional Digital Preamp Figure 2.2.3 4-Wire Transmitter, Model TR86 turbidity and Model DO82 Dissolved Oxygen sensors Page 17 Model T80...

  • Page 19: Wiring, Power

    IRING POWER ECD recommends using a thermoplastic, outdoor sunlight resistant jacketed cable, wet location rated and ½” flexible conduit. The power should be hard wired with a switch or breaker to disconnect the analyzer from the main power supply. Install the switch or breaker near the analyzer and label it as the Power Switch for the...

  • Page 20: Wiring, Sensor

    Loop Powered (2 wire configuration) Attach the 24VDC signal cable to terminals #1 and #2 as shown in Figure 2.2.1 and on the diagram inside of the T80 cover. Feed the cable through the gland fitting on the right hand side of the T80. Tighten the cable gland to provide a good seal to the cable.

  • Page 21: Wiring, Contact Relay Outputs

    2.2.4 W IRING ONTACT ELAY UTPUTS The standard configuration has three SPDT 230V 5 A relays that can be wired either normally open (NO) or normally closed (NC). The default configuration is set to use the relays as normally open. 2.2.5 W MODBUS RTU IRING...

  • Page 22: Operation

    3.0 OPERATION The ECD Model T80 transmitter is an intelligent, single or dual channel multi-parameter transmitter designed for the online continuous measurement of pH, ORP, pION, conductivity, resistivity or Dissolved Oxygen in a general purpose industrial environment. The Model T80 transmitter digitally communicates with any ECD S80 digital sensor.

  • Page 23: Selection Adjustment Keys

    3.1.3 S ELECTION DJUSTMENT The (4) Selection/Adjustment keys allow navigation and numerical adjustments to be made in the MENUs. To enter the HOME Menu screen press any of the Selection/Adjustment keys twice within one second. The various Menu choices and adjustment tools are displayed above the buttons once inside the MENU. 3.1.4 A LPHA UMERIC...

  • Page 24: Config (Configuration Menu)

    Any two solutions can be used for AUTO calibration however if solutions other than those listed above are used for calibration then the calibration values must be entered manually.  STAND is standardization, a single point calibration. Standardizations are typically used to adjust the process reading to agree with a laboratory determined “grab sample”...
  • Page 25 times and the State, energize: changes state from de-energized to energized on alarm. o Timed, Enter Period, Duration times and Hold On/Off o Fault, No input required, relay condition changes from energize to de- energize. o Disable, Inactivates relay and removes the relay 1 button from the HOME Screen display.

  • Page 26: Info (Information Menu)

    o Qty of SENSORS, Choose 1 or 2  Load Default resets all Menus to factory default configuration. 3.2.4 INFO (I NFORMATION The Information Menu provides two choices,  Transmitter Screen, details the Name, Power type, Serial #, Firmware version and the output configuration(s). ...

  • Page 27: Sentinel® Screens

    3.2.7 SENTINEL® S CREENS The SENTINEL feature allows the Model T80 transmitter to provide Pre-pHault diagnostic information about the accuracy of a pH, ORP or pIon measurement. The SENTINEL displays a filled triangular gauge that decreases proportionally to the degradation of the reference electrode. A filled gauge indicates a properly functioning measurement while the emptying gauge indicates the remaining life of the electrode.

  • Page 28: Start Up Guide

    3.3 START UP GUIDE Install and wire the T80 Transmitter as described in Sections 2.1 and 2.2 above. Connect the sensor to the transmitter as described in Section 2.2 above. Supply power to the Model T80 transmitter. Verify the proper measurement type is displayed, pH, ORP or Ion. The sensor automatically uploads the measured parameter, the calibration data and the range of measurement to the transmitter.

  • Page 29: Exit Menus And Return To Main Display

    o Delay OFF: The amount of time the PV must remain above/below the hysteresis point before the relay deactivates. o STATE: Energize (relay is energized on activation)/De-energize (relay is de-energized on activation)  TIMER activates the relay periodically for a specific duration, user configured period and duration ...

  • Page 30: User Selectable Options

    3.4 USER SELECTABLE OPTIONS 3.4.1 S CREEN IGHTING LED back lighting is available on AC and DC powered instruments only, this feature is inactive on loop powered instruments. Contrast can be adjusted for optimal viewing. The Backlight can be adjusted to timeout after a set period of time or remain on.

  • Page 31: Sensor Name

    3.4.5 SENSOR N Two 16 character lines are available for naming the Sensor, Upper and Lower case characters, Numbers and Punctuation are available. The information entered will be displayed in the INFO screen. Entry is accomplished by scrolling through the alphanumeric list with the ▲ (forward →) and ▼ (backwards ←) arrows to the character of choice and then pressing NEXT to advance the cursor to the next digit.

  • Page 32: Calibration

    4.0 CALIBRATION The Model T80 transmitter provides three methods of calibration: 4.0.1 AUTO C ALIBRATION DESCRIPTION Auto calibration is the primary calibration method for all measurements. AUTO calibration automatically recognizes the calibration solution the sensor is in and proposes the actual temperature compensated value for acceptance.
  • Page 33 3. Calculate and Record the slope of the electrode, 58.2 mV/pH 4. Install the electrode into the field mounted sensor 5. Press MANUAL and enter the pH value, 7.00 pH, press mV and enter the corresponding mV value, 6.8 mV, press OK, Accept Offset?, press YES, enter slope 58.2 mV/pH, press OK, Accept Slope?, Press YES 6.

  • Page 34: Ph Calibration Procedures

    ALIBRATION ROCEDURES AUTO Calibration recognizes pH 4.01, pH 7.00 and pH 10.00 buffer solutions for automatic, temperature compensated calibrations. Any calibration solutions can be used but the pH value will have to be entered manually. Follow the steps below to accomplish a pH calibration. Example uses pH 7.00 and pH 4.01 buffers. 4.1.1 AUTO C H 4.01, 7.00, 10.00 AL USING P...

  • Page 35: Orp Calibration Procedures

    Press CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log) Press NO Place Sensor in CAL Solution (or leave in the process solution) Press STAND Enter Value Press ▲ ▼ NEXT xx.xx pH (use arrows and NEXT to enter process pH value) Press OK xx.xx pH, xxx.x mV, Accept Value?

  • Page 36: Pion Calibration Procedures

    ION C ALIBRATION ROCEDURES AUTO Calibration recognizes 1, 10 or 100 ppm/ppb calibration solutions. Any calibration solutions can be used but the ppm value will have to be entered manually. Follow the steps below to accomplish a pION calibration. 4.3.1 AUTO C 1, 10, 100 AL USING PPM SOLUTIONS...

  • Page 37: S80/Do90 Dissolved Oxygen Calibration Procedures

    Press CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log) Press NO Place Sensor in CAL Solution (or leave in the process solution) Press STAND Enter Value Press ▲ ▼ NEXT xxxx.x ppm (use arrows and NEXT to enter process Ion ppm value) Press OK xxxx.x ppm, xxx.x mV, Accept Value?

  • Page 38: Auto Cal Using Zero Ppm Solution And Air

    1 (34) 14.23 15 (59) 10.06 29 (84) 7.69 2 (36) 13.83 16 (61) 9.85 30 (86) 7.55 3 (38) 13.45 17 (63) 9.64 31 (88) 7.42 4 (39) 13.09 18 (64) 9.45 32 (90) 7.30 5 (41) 12.75 19 (66) 9.26 33 (91) 7.18...

  • Page 39: Standardize

    Press HOME Hold is ON Press HOLD Turn off Hold Press EXIT Main Display 4.4.2 S TANDARDIZE Leave the sensor in the process solution or in the air, take a grab sample from the process and determine the dissolved oxygen concentration or enter the temperature and pressure corrected value for air. Action Prompt Double Press any Button...

  • Page 40: Triton® Dissolved Oxygen Calibration Procedures

    4.5 TRITON® D ISSOLVED XYGEN ALIBRATION ROCEDURES Before starting a calibration Enter the Salinity and Barometric pressure in the CONFIG→SENSOR menu. The default values are Salinity 0% and 1013 mbar. Use Table 2 above to calculate the pressure using elevation if the actual pressure is not known.

  • Page 41: Standardize

    Calibrations should be performed in a vessel with similar characteristics to the actual process installation. Black plastic containers work best, minimizing reflectance problems in lower NTU solutions. ECD offers a TRITON® TR6 Turbidity Calibration Kit that includes a TR6 Calibration Cup, 250 ml, 100 ml and 50 ml graduated cylinders and a 1 liter volumetric flask.

  • Page 42: Auto Cal

    (50%) solution, 1425 mg/L and one liter of deionized water (0%). Start the calibration in the deionized water in the calibration cup and accept 0.00 mg/L when prompted, then put the sensor into the 1425 mg/L solution and enter 1425 mg/L when prompted and finally into the 2850 mg/L solution and enter 2850 mg/L. Accept the calibration and put the sensor back into the process.

  • Page 43: Manual Cal

    Press STAND Enter Zero Value Press ▲ ▼ NEXT 0.00 NTU or ppm, mg/L, % Solids (use arrows and NEXT to enter process value) Press OK 0.00 NTU, Accept Value? Press YES Stand Cal Complete: 8.61 NTU, DESIRED VALUE: 0.00 NTU, OFFSET 8.61 NTU Press OK Back to Cal Menu Press HOME...

  • Page 44: Standardize

    Press Yes/NO Remove the Sensor from Solution and dry the front end, Air = 0.00 µS To perform zero CAL press CAL 1, to skip zero cal press CAL 2, only if a zero cal was previously done on the sensor Press AUTO then CAL 1 STABILIZING, 0.00 µS, 1.17 V, 0.00 µS corrected, Accept Cal? Press YES...

  • Page 45: Standardize

    4.8.1 S TANDARDIZE With the sensor in the process solution, take a grab sample from the process and determine the TDS using a qualified laboratory method. Action Prompt Double Press any Button MENU HOME, Hold is OFF Press HOLD Hold freezes 4-20 mA Output and locks Alarm Relays during Calibration Press CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log) Press NO...

  • Page 46: Salinity (Practical Salinity Scale)

    Press NO With the sensor in the process solution Press STAND Enter the laboratory determined conductivity value Press ▲ ▼ NEXT xxx.xx MΩ (use arrows and NEXT to enter process value) Press OK Current Value xx.xx MΩ, Desired Value: xx.xx MΩ, Offset XX.XX OK? Press OK Back to Cal Menu Press Home...

  • Page 47: Maintenance

    5.0 MAINTENANCE No periodic maintenance is required for the ECD Model T80 Transmitter. When you open the front cover and/or cable glands, make sure that the seals are clean and correctly fitted when the unit is re-assembled in order to maintain the housing’s NEMA 4X weatherproof integrity against water and water vapor.

  • Page 48: Troubleshooting

    6.0 TROUBLESHOOTING Symptom Probable cause Remedy Blank Display No Power Check power source, 24VDC loop, 24VDC, 110/220VAC Sensor Failure, causing power draw Unplug sensor from transmitter, down below transmitter threshold replace sensor if instrument powers up. Incorrect Readings Sensor needs calibration Perform a standardization calibration.

  • Page 49: Parts And Accessories

    7.0 PARTS AND ACCESSORIES 7.1 F RONT ANEL ONTROL OARD XPLODED 7.2 F RONT ANEL ONTROL OARD XPLODED WITH ELAYS Item # Part # Description 9630005 Spring, Mounting Screw Set 9870621 Retaining Washer, Mounting Screw Set 3600390 8-32 x 1” SS Screw, Mounting Screw Set 3400152 Front Housing 9560005...

  • Page 50: Transmitter Case, Back With Cable Glands

    7.3 T RANSMITTER BACK WITH ABLE LANDS Item # Part # Description 3600449 Transmitter Case 9360005 PVC Cable Gland, ½” NPT, Grey 9300034 Locking Nut, ½” NPT, Steel 9300017 Sealing ring, ½” elastomer 9870650 Split Washer, PS mounting 9870620 Flat Washer, PS mounting 2101820-1 Power Supply Board 9730604...

  • Page 51: Accessories

    7.5 A CCESSORIES Part # Description 2000006 Kit, Universal Mount 2000007 Kit, Handrail Mount 2000008 Kit, Panel Mount 1000300-1 4-20 mA USB Data Logger 9130007 Replacement Battery for Data Logger 1000260-1 Sunshield for Pole Mount 1000260-2 Sunshield for Rail Mount...

  • Page 52: S80 Sensors

    8.0 S80 SENSORS S80 sensors are a family of digital sensors designed for use with ECD digital analyzers, the Model T80 transmitter or the Model C80 controller. S80 sensors accept the standard ECD electrode cartridges. The S80 sensors convert the analog signals into a temperature compensated digital protocol that allows two way communications with the transmitter.

  • Page 53: Valve Retractable

    Although the insertion configuration can be used as a flow-through mounting by inserting the S80 sensor into a pipe tee, ECD has various flow cells available for convenience. The flow cells are 2.0” diameter by 5” long, ported ½” FNPT through and ¾” FNPT for the sensor. The flow cells are available in 316 Stainless Steel, PVC and Kynar.

  • Page 54: Flange Fittings

    8.1.5 F LANGE FITTINGS Flange mountings can be accomplished with the insertion and valve-retraction configurations using the desired flange and by mounting the gland fitting or valve-retraction assembly to the flange. 8.2 S80 P UMBER ONFIGURATOR S80 sensors are available in five measurement types, (-0) a millivolt style for pH, ORP and ion selective measurements, (-1) dissolved oxygen style, (-2) contacting conductivity style, (-3) inductive conductivity style and (-4) resistivity style.

  • Page 55: Triton® Do80 Sensors

    Cable Length -0 No Cable (Detachable Cable Version only) -1 10 ft. (Standard) -2 20 ft. -3 30 ft. -4 40 ft. -5 50 ft. -A 100 ft. “T” Handle 0 No “T” Handle 1 (T) “T” Style handle with Lanyards for Valve Retractable 2 (TP) “T”...

  • Page 56: Triton® Tr6 Sensors

    8.4 TRITON® TR6 S ENSORS TR6 Turbidity Suspended Solids Sensor Optical Style Front Mounted Optics, for use with Immersion assembly Side Mounted Optics, for use with Immersion assembly Side Mounted Optics, for use with Flow Through Cell Process Connection None 1”...

  • Page 57: S80 Sensor Maintenance

    8.3 S80 S ENSOR AINTENANCE All electrochemical sensors require periodic cleaning and/or replacement. The life of an electrode is dependent on the process conditions it is exposed to, a pH electrode may last a year or longer in potable water and only a few weeks in a hot caustic bath.

  • Page 58: Ph Electrode Cartridge Cleaning

    If the electrode must be left out of the process for an extended period of time, store it in a solution of water saturated with KCl or a 4.0 pH buffer solution. ECD does not recommend the storage of electrodes in distilled or deionized water.

  • Page 59: Dissolved Oxygen Cartridges

    Fluoride Electrodes a. Moisten the end of the Q-tip with water and dip it in the alumina polishing powder to pick up a small amount of the powder. b. Rub the polishing powder onto the fluoride crystal in a circular motion and moisten the tip if necessary to produce a liquid consistency more than a paste.
  • Page 60 Cleaning the Sensor The fluorescence cap of the Triton DO80 sensor must be clean to ensure an accurate measurement. The measurement will degrade as the fluorescence cap gets coated. Build-up of material on the cap will increase the response time and decrease the slope. The sensor should be cleaned on a regular basis and before every calibration.

  • Page 61: Triton Tr6 Turbidity

    8.3.9 TRITON TR6 T URBIDITY The TR6 turbidity sensors don’t require periodic service except in coating applications. Quarterly checks should be performed to assure the accuracy of the measurement. The TR6 response can become sluggish due to coating from materials in the process solution. Periodic cleaning will minimize drift and maintain the sensors response.

  • Page 62: S80 Sensor Specifications

    8.4 S80 S ENSOR PECIFICATIONS Dimensions: S80 - ¾”OD x 10” Length, optional lengths, 17”, 24”, 30”, 36” .… in 6” increments to 8 ft. Cable Length: 10 ' standard, Optional lengths in 10 ' increments 4 conductors shielded Housing Materials: Standard, 316 Stainless Steel, Optional, Titanium (T), grade 2, Hastelloy (H), C-22, PVDF (K), O-Ring Materials: Viton™...

  • Page 63: Orp Electrodes

    Fluoride resistant, Peek body, Rugged pH glass, dbl jct 2005103 0-14 pH -10°-90°C 150 psig TFE Ref, 2005013 pH, antimony, RADEL body, TFE junction 3-10 pH 10°-50°C 150 psig 8.4.2 ORP E LECTRODES Part#: 2005167 (2005367 SENTINEL) ORP sensor: Platinum Construction: PEEK body, Reference Electrode: double porous Teflon junction Measurement Range: -1500 mV - +1500 mV...

  • Page 64: Chloride Electrode

    Temperature Range: 0°-40°C Pressure Range: 50 psig 8.4.7 C HLORIDE LECTRODE Part #: 2005008 (2005308 SENTINEL) ISE sensor: solid state AgS/AgCl membrane Construction: Radel (PES) body, Reference Electrode: double porous Teflon junction Measurement range: 2 - 35,000 ppm pH Range: 2-12 pH Temperature Range: 0°-80°C Pressure Range: 150 psig 8.4.8C...

  • Page 65: Silver Electrode

    Maximum Pressure 10 bar (159 psi) Temperature Range: -5° - 50°C (20° - 120°F) Measuring -20° - 60°C (0° - 140°F) Ambient Response Time: T90 = 60 sec Accuracy: Max. Error < 2 % of measured range Repeatability: ±0.5 % of measured range Resolution: 0.01 ppm or 0.01 % Saturation...

  • Page 66: Triton® Tr6

    Weights: Cable length 7 m (23 ft): 0.7 kg (1.5 lbs) Cable length 15 m (49 ft): 1.1 kg (2.4 lbs) 8.4.16 TRITON® TR6 Measuring principle: Particle caused back scattering of 850 nm near infrared light with sunlight rejection filter Measuring Range: -1 Sensor 0.0 ...

  • Page 67: Appendix

    APPENDIX A. A UFFER ABLES °C 4.00 7.115 10.32 4.00 7.085 10.25 4.00 7.06 10.18 4.00 7.04 10.12 4.00 7.015 10.06 4.005 7.00 10.01 4.015 6.985 9.97 4.025 6.98 9.93 4.03 6.975 9.89 4.045 6.975 9.86 4.06 6.97 9.83 4.075 6.97 4.085 6.97...
  • Page 68 3 Alrm 1 dly on 4 Alrm 1 dly off 5 Alrm 2 thresh 6 Alrm 2 hyst 7 Alrm 2 dly on 8 Alrm 2 dly off 9 Alrm 3 thresh 10 Alrm 3 hyst 11 Alrm 3 dly on 12 Alrm 3 dly off 3 Address 2 Device...

  • Page 69: D.modbus Rtu Register Listing

    D.MODBUS RTU R EGISTER ISTING 03 (0 03) R OLDING EGISTERS This function code is used to read the contents of a contiguous block of holding registers in a remote device. The Request Protocol Data Unit specifies the starting register address and the number of registers. In the Protocol Data Unit Registers are addressed starting at zero.

  • Page 70: Registers

    Register Value 2 Bytes 0x0000 to 0xFFFF 2 Bytes calculated *N = Quantity of Registers Error Modbus ID (Slave Address) 1 Byte 1 to 247 (0x01 to 0xF7) Error Code 1 Byte 0x86 Exception Code 1 Byte 01, 02, 03 or 04 2 Bytes calculated EGISTERS...
  • Page 71 Relay ON Setpoint (hi word) Read/Write Relay ON Setpoint (byte 3 and byte 2) 32 bit Floating Relay ON Setpoint (lo word) Read/Write Relay ON Setpoint (byte 1 and byte 0) Point Relay OFF Setpoint (hi Read/Write Relay OFF Setpoint (byte 3 and byte 2) 32 bit word) Floating...
  • Page 72 S80 Serial Number (hi word) Unit Serial Number (32 bit integer hi word) 32 bit Long Integer S80 Serial Number (lo word) Unit Serial Number (32 bit integer lo word) 16 bit S80 Fault Status Integer 16 bit S80 Sensor Type Specific S80 sensor type (see S80 Sensor Types tab) Integer Specific chemicals the S80 is set to detect (see S80...

  • Page 73: Fault Status

    16 bit Sensor Abbreviated Name ASCII bytes 4 and 5 Integer 16 bit Sensor Abbreviated Name ASCII bytes 6 and 7 Integer Signals the user has completed entering the data and 16 bit Initiate S80 Storage wants it stored. Write any value. Integer Cal log number to read (0 - Cal Log 1, 1 - Cal Log 2, 2 - 16 bit...

  • Page 74: Sensor Type

    ENSOR Data Meaning Measurement Decimal Hexadecimal Chemical Sensor Type Units Unknown 0000 Chemical None None Ammonia 0001 Ammonium 0002 Bromide 0003 Calcium 0004 Chloride 0005 Conductivity Conductivity 0006 Cupric 0007 Cyanide 0008 0009 % saturation 000A mg/L 000B Fluoride 000C Hardness (CaCO₃) 000D Nitrate...

  • Page 75: Resistivity Temperature Compensation

    E. R ESISTIVITY EMPERATURE OMPENSATION The temperature coefficient of pure water changes with concentration and temperature. The graph below shows the % change per °C for 18.2 MΩ water. For the range of 20°- 40°C the mean value is -5% per °C, this is the default value set in the Model T80.

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