Instruction d'utilisation Emerson Process Management - Emerson Electric Co.225

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Instruction Sheet
PN 51A-225/rev.I
December 2010
Model 225
Sanitary and CIP Toroidal Sensor
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at www.emersonprocess.com/raihome/liquid/.
CAUTION
CAUTION
WARNING
SENSOR/PROCESS
APPLICATION COMPATIBILITY
Before removing the sensor, be absolutely certain
that the process pressure is reduced to 0 psig and
The wetted sensor materials may not be compatible
the process temperature is lowered to a safe level!
with process com position and operating con

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MODEL 225 INSTALLATION WIRING Keep sensor wiring away from ac conductors and high current demanding equipment. Do not cut cable. Cutting the cable may void the warranty. FIGURE 2. Wire Functions FIGURE 3. Wiring 225-54 and 225-56 sensors to Model 1056 and 56 analyzers 2

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MODEL 225 INSTALLATION FIGURE 4. Wiring 225-54 and 225-56 sensors to Model 54eC analyzer FIGURE 5. Wiring 225-54 and 225-56 sensors to Model Xmt-T panel mount transmitter 3

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MODEL 225 WIRING FIGURE 6. Wiring 225-54 and 225-56 sensors to Model Xmt-T pipe/wall mount transmitter TB2 TB1 TB2 TB1 RTN RCV B RTN RCV B SENSE RCV A SENSE RCV A RTD IN RSHLD RTD IN RSHLD SHLD DRV B SHLD DRV B DRV A DRV A DSHLD DSHLD CLEAR (NOT USED) 225-54 225-56 FIGURE 7. Wiring 225-54 and 225-56 sensors to Model 1066 transmitter. 4 GREEN WHITE CLEAR BLACK GREEN BLACK WHITE CLEAR GREEN WHITE BLACK BLACK GREEN CLEAR BLACK WHITE CLEAR

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MODEL 225 WIRING FIGURE 8. Wiring 225-54 and 225-56 sensors to Model 5081-T transmitter PRESENT IN 23294-05 ONLY AND PN 23294-04 FIGURE 9. Wiring sensors through a remote junction box Wire sensors point to point. For wiring at the analyzer end, refer to the appropriate analyzer wiring diagram. For interconnecting cable 23294-00, use the 225-54 wiring diagram. For interconnecting cable 23294-04 and 23294-05, use the 225-56 wiring diagram. 5

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MODEL 225 CALIBRATION FIGURE 10. Remote Junction Box (PN 23550-00) the process piping. Model 225 sensors are often CALIBRATION installed in sanitary flange tees, so an appropriate cal- The nominal cell constant of the Model 225 sensor is ibration vessel is another tee with blank flanges on the 2.7/cm. The error in the cell constant is about ±10%, so ends. If removing the sensor from the process piping for conductivity readings made using the nominal cell con- calibration is impractical, calibra

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MODEL 225 TROUBLESHOOTING TROUBLESHOOTING PROBLEM PROBABLE CAUSE SOLUTION Off-scale reading Wiring is wrong. Verify and correct wiring. RTD is open or shorted. Check the RTD for open or short circuits. See Figure 12. Sensor is not in process stream. Confirm that the sensor is fully submerged in the process stream. See installation section. Sensor is damaged. Perform isolation checks. See Figure 12. Noisy reading Sensor is improperly installed in the Confirm that the sensor is fully submerged

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FIGURE 12. Resistance check. Disconnect leads from analyzer before measuring resistances. 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