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User’s Guide
Conductivity/Resistivity
62.50 uS/cm
25.0°C
Shop online at
ENTER
www.omega.com
e-mail: info@omega.com
CDTX-90 Series
Conductivity/Resistivity Transmitters
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® OMEGAnet Online Service Internet e-mail www.omega.com info@omega.com Servicing North America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047 TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Ber
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Omega CDTX-90 Series Conductivity/Resistivity Transmitter Conductivity/Resistivity CAUTION! Contents 62.50 uS/cm 25.0°C • Remove power to unit before wiring 1. Installation input and output connections. 2. Specifications • Follow instructions carefully to avoid 3. Electrical Connections ENTER personal injury. 4. Menu Functions 1. Installation CDTX-90 Series transmitters are available in two styles: panel mount and field mount. The panel mount is supplied with the necessary hardware to install t
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Ultra- 3. Electrical Connections CDCE-90 Series Sensor Ranges Pure Pure Rinse CDCE-90-20 CDCE-90-10 Sensor Selection CDCE-90-1 Select the sensor with a range closest to your process minimum and CDCE-90-01 maximum values. CDCE-90-001 • CDCE-90-001 (0.01 cell): 0.055 to 100 µS (10 k Ω to 18 M Ω) Use the CDCE-90-001 for all resistivity requirements 0.055 1 10 100 200 1,000 10,000 200,000 400,000 • CDCE-90-01 (0.1 cell): 1 to 1000 µS (10 kΩ) (18 MΩ) • CDCE-90-1 (1.0 cell): 10 to 10,000 µS
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CDTX-90-1 Terminal connections Terminals 3 and 4: Loop Power 12-24 VDC ±10% system power Terminals 7-10: Sensor input and current loop output. 7 is conductivity input Max. loop impedance: 8 is temperature input 50 Ω max. @ 12 V 9 is the isolated signal ground 325 Ω max. @ 18 V 10 is the sensor earth ground 600 Ω max. @ 24 V System Pwr Sensr Gnd 4 10 Loop - (SHIELD) System Pwr Iso. Gnd Output - 6 3 Loop + 9 (BLACK) AUX Temp. IN 2 Power - 8 (WHITE) AUX Signal IN Output + Power + 1 5 7 (RED) I
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CDTX-90-2 Terminal Connections Terminals 3 and 4: Loop Power 12-24 VDC ±10% system power Terminals 11-14: Sensor input and current loop output. 11 is conductivity input Max. loop impedance: 12 is temperature input 50 Ω max. @ 12 V 13 is the isolated signal ground 325 Ω max. @ 18 V 14 is the sensor earth ground 600 Ω max. @ 24 V Relay 2 10 (NO) Relay 2 9 (COM) System Pwr Relay 2 Sensr Gnd 4 8 14 Loop - (NC) (SHIELD) System Pwr Relay 1 Iso. Gnd 3 7 13 Loop + (NO) (BLACK) AUX Temp. IN Relay
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CDTX-90-3 Terminal Connections Terminals 3-6: Loop Power 12-24 VDC ±10% system power and current loop output. Max. loop impedance: 50 Ω max. @ 12 V 325 Ω max. @ 18 V Terminals 11-14: Sensor input 600 Ω max. @ 24 V 11 is conductivity input 12 is temperature input 13 is the isolated signal ground Loop 2- Output 2- 14 is the sensor earth ground 6 10 Loop 2+ 5 System Pwr Sensr Gnd Output 2+ 4 9 14 Loop - (SHIELD) System Pwr Iso. Gnd Output 1- 3 8 13 Loop + (BLACK) AUX Temp. IN 2 Power - 12 (WH
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3.3 Relay and Open Collector Outputs The Relay and Open Collector outputs can be used as a switch • Proportional Pulsing that responds when the process value moves above or below a The output will generate a 100 mS pulse at the rate defined by setpoint, or they can be used to generate a pulsing signal with a settings in the CALIBRATE menu. rate proportional to the process value. In the example below: • Low setpoint: • The output will be 0 pulses/min. when value is less than 5 µS. Output trigger
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CDTX-90 Series Editing Procedure: Step 1. Press and hold ENTER key: • 2 seconds to select the CALIBRATE menu. • 5 seconds to select the OPTIONS menu. Step 2. The Key Code is UP-UP-UP-DOWN keys in sequence. • After entering the Key Code, the display will show the first item in the selected menu. Step 3. Scroll menu with UP or DOWN arrow keys. Step 4. Press RIGHT ARROW key to select menu item to be edited. • The first display element will begin flashing. Step 5. Press UP or DOWN keys to
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CDTX-90-1 Calibrate Menu Display Description (Factory settings shown) Cell Constant: Select CUSTOM only if you are connecting a certified conductivity sensor. Select STANDARD for all other systems. Standard > Cell: Standard For STANDARD sensors: Select from these options: 0.01, 0.1, 1.0, 10.0 or 20.0. 1> Cell: Custom For CUSTOM sensors: Enter the precise cell constant from the certificate provided with your sensor, or from the information label on the sensor. 1.0000 > Cond Units: Select from
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CDTX-90-1 Options Menu Display Description (Factory settings shown) Contrast: 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. 3> Cond Decimal: Set the decimal to the best resolution for your application. The display will auto- matically scale down to this restriction. Select *****., ****.*, ***.** **.*** or *.**** ****.* > Averaging OFF provides the most instantaneous
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CDTX-90-2 Calibrate Menu Display Description (Factory settings shown) Cell Constant: Select CUSTOM only if you are connecting a certified conductivity sensor. Select STANDARD for all other systems. Standard > Cell: Standard For STANDARD sensors: Select from these options: 0.01, 0.1, 1.0, 10.0 or 20.0. 1> Cell: Custom For CUSTOM sensors: Enter the precise cell constant from the certificate provided with your sensor, or from the information label on the sensor. 1.0000 > Cond Units: Select from
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CDTX-90-2 Options Menu Display Description (Factory settings shown) Contrast: 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. 3> Cond Decimal: Set the decimal to the best resolution for your application. The display will automatically scale down to this restriction. Select *****., ****.*, ***.** **.*** or *.**** ****.* > Averaging: OFF provides the most instantaneous
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CDTX-90-3 Calibrate Menu Display Description (Factory settings shown) Cell Constant: Select CUSTOM only if you are connecting a certified conductivity sensor. Select STANDARD for all other systems. Standard > Cell: Standard For STANDARD sensors: Select from these options: 0.01, 0.1, 1.0, 10.0 or 20.0. 1> Cell: Custom For CUSTOM sensors: Enter the precise cell constant from the certificate provided with your sensor, or from the information label on the sensor. 1.0000 > Cond Units: Select from
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CDTX-90-3 Options Menu Display Description (Factory settings shown) Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher. Contrast: In general, select lower contrast if the display is in warmer ambient surroundings. 3> Cond Decimal: Set the decimal to the best resolution for your application. The display will automatically scale down to this restriction. Select *****., ****.*, ***.** **.*** or ****.* > *.**** Averaging OFF provides the most instantaneous
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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 by known solution value (A), or by resistance simulation (B). A) Calibration with NIST Traceable Solutions: When using NIST traceable standards, ensure th
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Parts Per Million (PPM) Factor This feature is only applicable when PPM display units are selected. The programmable PPM Factor is adjustable from 0.01 to 3.00 (factory default = 2.00). Determine the best PPM Factor for a process solution by calculating the solution's conductivity (µS) and the percent of total dissolved solids (PPM). Solution conductivity (µS)/cm PPM Factor = Total dissolved solids (PPM) Solution conductivity (µS)/cm TDS (PPM) = PPM Factor Example: • Solu
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Notes page 18
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WARRANTY/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. OMEGA’s WARRANTY 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’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department wi
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Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at www.omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors Infrared Pyrometers PRESSURE, STRAIN AND FORCE Transducers & Strain Gages Load Cells & Pressure Gages Displacement Transducers Instrumenta
