Manual do usuário Emerson ENDURANCE Conductivity Sensor PN 51A-404

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Instruction Sheet
PN 51A-404/rev.M
December 2010
Model 404
™
ENDURANCE Conductivity Sensor
For additional information, please visit our website
at www.emersonprocess.com/raihome/liquid/.
CAUTION
SENSOR/PROCESS WARNING
WARNING
APPLICATION COMPATIBILITY
Before removing the sensor, be absolutely certain
The wetted sensor materials may not be compatible
that the process pressure is reduced to 0 psig and
with process com position and operating conditions.
the process temperature is lowered to a safe

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MODEL 404 WIRING WIRING WIRE COLOR AND CONNECTIONS IN SENSOR COLOR FUNCTION Gray Connects to outer electrode Clear Coaxial shield for gray wire Orange Connects to inner electrode Clear Coaxial shield for orange wire Red RTD in White with red stripe RTD RTD sense White RTD return Clear Shield for all RTD lead wires WIRING DIAGRAMS FIGURE 2. Model 54eC Wiring FIGURE 3. Model 56 and 1056 Wiring TB2 TB1 RTN WHITE RCV B SENSE WHITE/RED RCV A RTD IN RED CLEAR RSHLD SHLD DRVB CLEAR GRAY ORANGE DRVA

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MODEL 404 INSTALLATION FIGURE 5. Model Xmt-C-10 Wiring (Panel) FIGURE 6. Model Xmt-C-11 Wiring (Pipe or Wall) FIGURE 7. Model 5081-C Wiring FIGURE 8. Model 6081-C Wiring WIRING THROUGH A JUNCTION BOX If wiring connections are made through a remote junction box (PN 23550-00), wire point-to-point. Use cable 23747-00 (factory-terminated) or 9200275 (no terminations). 3

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MODEL 404 WIRING CLEANING THE SENSOR The 404-17 (stainless steel body) sensor can be taken apart for cleaning. However, in some cases, disassembling and reassembling the sensor can cause the cell constant to change as much as 1%. For maximum accuracy, the cell con- stant should be rechecked after the sensor has been reassembled. The 400-16 (PVC body) sensor cannot be taken apart. Use a warm detergent solution and a soft brush or pipe cleaner to remove oil and scale. Isopropyl alcohol (rubbing al

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MODEL 404 WIRING TROUBLESHOOTING PROBLEM PROBABLE CAUSE SOLUTION Off-scale reading Wiring is wrong. Verify wiring. Temperature element is open or shorted. Check temperature element for open or short circuits. See Figure 9. Sensor is not in process stream. Be sure sensor is completely submerged in process stream. Variopol cable is not properly seated. Loosen connector and reseat. Sensor has failed. Perform isolation checks. See Figure 10. Noisy reading Sensor is improperly installed in process

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NOTES 6

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NOTES 7

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The right people, the right answers, ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE right now. http://www.raihome.com Specifications subject to change without notice. Credit Cards for U.S. Purchases Only. Emerson Process Management 2400 Barranca Parkway Irvine, CA 92606 USA Tel: (949) 757-8500 Fax: (949) 474-7250 http://www.raihome.com © Rosemount Analytical Inc. 2010 8