Instruction/ maintenance manual of the product CDTX-90 Omega
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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.
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.
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.
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.
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 .
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 Con.
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 Suppl.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
page 18 Notes.
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.
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 & T.
An important point after buying a device Omega CDTX-90 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Omega CDTX-90 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Omega CDTX-90 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Omega CDTX-90 you will learn all the available features of the product, as well as information on its operation. The information that you get Omega CDTX-90 will certainly help you make a decision on the purchase.
If you already are a holder of Omega CDTX-90, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Omega CDTX-90.
However, one of the most important roles played by the user manual is to help in solving problems with Omega CDTX-90. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Omega CDTX-90 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
