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Omega CDTX-90 - page 1
www .omega.com e-mail: info@omega.com U ser ’ s Guide Shop online at CDTX-90 Series Conductivity/Resistivity T ransmitters Conductivity/Resistivity 62.50 uS/cm 25.0 ° C ENTER ...
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Omega CDTX-90 - page 2
page 2 It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification. The information contained in this document is believed to be correct, ...
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Omega CDTX-90 - page 3
page 3 CAUTION! • Remove power to unit before wiring input and output connections. • Follow instructions carefully to avoid personal injury. Omega CD TX -90 Series Conductivity/Resistivity T ransmitter Contents 1. Installation 2. Specifications 3. Electrical Connections 4. Menu Functions 2. Specifications General Compatible electrodes: Omega CD ...
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Omega CDTX-90 - page 4
page 4 Caution: Failure to fully open terminal jaws before removing wire may permanently damage instrument. Wiring Procedure 1. Remove 0.5 - 0.625 in. (13-16 mm) of insulation from wire end. 2. Press the orange terminal lever downward with a small screwdriver to open terminal jaws. 3. Insert exposed (non-insulated) wire end in terminal hole until i ...
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Omega CDTX-90 - page 5
page 5 CDTX-90-1 System Power/Loop Connections Stand-alone application, no current loop used T ransmitter 4 3 2 1 Sys. Pwr . Loop - Sys. Pwr . Loop + AUX Power - AUX Power + Power Supply DC 12 - 24 V Power Supply Power Supply Connection to a PLC with built-in power supply PLC Power Supply Ground Power Supply Loop Input 4-20 mA Loop Input 4-20 mA In ...
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Omega CDTX-90 - page 6
page 6 Stand-alone application, no current loop used T ransmitter T erminals 4 3 2 1 Sys. Pwr . Loop - Sys. Pwr . Loop + AUX Power - AUX Power + Power Supply DC 12 - 24 V Power Supply Power Supply Connection to a PLC with built-in power supply PLC Te r m inals Power Supply Ground Power Supply Loop Input 4-20 mA Loop Input 4-20 mA Internal PLC Conne ...
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Omega CDTX-90 - page 7
page 7 Stand-alone application, no current loop used T ransmitter T erminals 6 5 4 3 2 1 Loop2- Loop2+ Sys. Pwr . Loop - Sys. Pwr . Loop + AUX Power - AUX Power + Power Supply DC 12 - 24 V Power Supply Power Supply Connection to a PLC with built-in power supply PLC T erminals Power Supply Ground Power Supply Channel 2 4-20 mA in Channel 2 4-20 mA i ...
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Omega CDTX-90 - page 8
page 8 VIEW menu • During normal operation, the transmitter displays the VIEW menu. • When editing the CALIBRATE or OPTIONS menus, the transmitter will return to the VIEW menu if no activity occurs for 10 minutes. • To select a VIEW display, press the UP or DOWN arrow keys. The selections will scroll in a continuous loop. • Changing the VIE ...
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Omega CDTX-90 - page 9
page 9 Notes on Steps 5 and 6: • All output functions remain active during editing. • Only the flashing element can be edited. • RIGHT ARROW key advances the flashing element in a continuous loop. • Edited value is effective immediately after pressing ENTER key. • If no key is pressed for 10 minutes unit will restore the last saved value ...
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Omega CDTX-90 - page 10
page 10 Select CUSTOM only if you are connecting a certified conductivity sensor. Select STANDARD for all other systems. For STANDARD sensors: Select from these options: 0.01, 0.1, 1.0, 10.0 or 20.0. For CUSTOM sensors: Enter the precise cell constant from the certificate provided with your sensor, or from the information label on the sensor. Selec ...
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Omega CDTX-90 - page 11
page 11 Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher. In general, select lower contrast if the display is in warmer ambient surroundings. Set the decimal to the best resolution for your application. The display will auto- matically scale down to this restriction. Select *****., ****.*, ***.** **.*** or *.* ...
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Omega CDTX-90 - page 12
page 12 Cell Constant: Standard > Cell: Standard 1> Cell: Custom 1.0000 > Cond Units: µ S> PPM Factor: 2.00 > Set: Temperature > Set: Conductivity > Loop Source: Cond > Loop Range: µ S 0.0000 → → → → → 100.000 > Relay1 Source: Cond > Relay1 Mode: Low > Relay1 Setpnt: 10.0000 µ S> Relay1 Hys: µ S 0.5 ...
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Omega CDTX-90 - page 13
page 13 Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher. In general, select lower contrast if the display is in warmer ambient surroundings. Set the decimal to the best resolution for your application. The display will automatically scale down to this restriction. Select *****., ****.*, ***.** **.*** or *.*** ...
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Omega CDTX-90 - page 14
page 14 Select CUSTOM only if you are connecting a certified conductivity sensor. Select STANDARD for all other systems. For STANDARD sensors: Select from these options: 0.01, 0.1, 1.0, 10.0 or 20.0. For CUSTOM sensors: Enter the precise cell constant from the certificate provided with your sensor, or from the information label on the sensor. Selec ...
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Omega CDTX-90 - page 15
page 15 Contrast: 3> Cond Decimal: ****.* > Averaging Off > Loop1 Adjust: 4.00 mA > Loop1 Adjust: 20.00 mA > Temp Display: º C> Temperature Comp %: 2.00 > Output1 Active: Low > Test Loop 1: > Test Output 1: > Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher. In general, select lo ...
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Omega CDTX-90 - page 16
page 16 Calibration Procedure 1. Requirements The CDTX-90 Transmitter is factory calibrated using simulated input signals. System calibration will reduce errors caused by sensor wire lengths longer than the standard 15 ft. length. Wire lengths of 100 feet are acceptable; cable shield must be maintained through cable splice. Calibration may be done ...
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Omega CDTX-90 - page 17
page 17 Display Condition Suggested Solutions Possible Causes "- - - -" Value Must be less than 3 Value must be greater than 0 "Value must be 400 or less" Display erratic, shows "0" or "------" intermittently "Too much Error Check Sensor" Display is over range. This may be a normal condition if your ...
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Omega CDTX-90 - page 18
page 18 Notes ...
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Omega CDTX-90 - page 19
page 19 W ARRANTY / DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OME GA ’ s W ARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA ? ...
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Omega CDTX-90 - page 20
6-8850.090-OM/(C-8/02) M3632/0802 Where Do I Find Ever ything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at www.omega.com TEMPERA TURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References ...
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