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Emerson 140 - page 1
Models 140, 141, and 142 Conductivity Sensors Instruction Sheet PN 51A-140/rev .E December 2010 SENSOR SPECIFICA TIONS For additional information, please visit our website at www .emersonprocess.com/raihome/liquid/ . CAUTION CAUTION SPECIFICA TIONS MODEL 140 MODEL 141 MODEL 142 Wetted Materials 316SS, PEEK, Viton 1 316SS, PEEK, V iton 1 316SS, Vito ...
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Emerson 140 - page 2
Keep 1/4 inch (6 mm) clearance between electrodes and piping. The electrodes must be completely sub- merged in the process liquid, i.e., to the level of the threaded connection. See Figure 1 for recommended orientation. If the sensor is installed in a side stream with the sample draining to open atmosphere, bubbles may accumulate on the electrodes. ...
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Emerson 140 - page 3
3 MODEL 140,141, and 142 sensors INST ALLA TION FIGURE 3. Inst alling model 141 sensor DWG . NO. REV . 40014204 B INST ALLA TION – 141 SENSOR 1. Install the sensor in a 3/4-inch NPT weldalet or in a 1-inch pipe tee. 2. Remove the plastic shipping cap from the sensor . 3. Screw the sensor into the fitting. Use pipe tape on the threads. See Figure ...
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Emerson 140 - page 4
RTD RTD in RTD sense RTD return MODEL 140,141, and 142 sensors WIRING WIRING All 140 series sensors have a junction box mounted on the back of the sensor . Wiring connections in the junction box are shown in Figure 5. Figure 5. Sensor junction box wiring. T erminals in the junction box are not numbered. GRA Y GRA Y MODEL 140 SERIES 141 and 142 sens ...
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Emerson 140 - page 5
5 MODEL 140,141, and 142 sensors WIRING FIGURE 8. Model Xmt-C-10 Wiring (Panel) FIGURE 9. Model Xmt-C-1 1 Wiring (Pipe or Wall) RCV B RCV A RSHLD DRVB RTN SENSE RTD IN SHLD CLEAR WHITE/RED RED DRV A DSHLD WHITE CLEAR GRA Y ORANGE CLEAR TB1 TB2 FIGURE 10. Model 1066 Wiring FIGURE 1 1. Model 5081C Wiring FIGURE 12. Model 6081-C Wiring ...
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Emerson 140 - page 6
RETRACTING AND INSERTING THE MODEL 140 SENSOR RETRACTING THE SENSOR 1. Push in on the sensor junction box and slowly loosen the sensor compression fitting nut by reversing the sensor tightening procedure illustrated in Figure 2. 2. When the sensor compression nut is completely unscrewed, slowly ease the sensor out until the flared tip of the electr ...
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Emerson 140 - page 7
MODEL 140,141, and 142 sensors WIRING 7 3. Slowly open the valve. 4. Insert the sensor up to the desired insertion depth and turn the sensor compression fitting nut until it is finger tight. 5. Position the entire sensor for easy access to the ball valve handle, sensor compression fitting nut and J-box terminal block. 6. T ighten sensor compression ...
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Emerson 140 - page 8
MODEL 140,141, and 142 sensors CALIBRA TION 8 CALIBRA TION Model 140 sensors are not calibrated at the factory . The cell const ant on the label is a nominal value only . The true cell constant can dif fer from the nominal value by as much as ± 5%. For improved accuracy , calibrate the sensor using either a solution of known conductivity or a refe ...
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Emerson 140 - page 9
9 MODEL 140,141, and 142 sensors MAINTENANCE MAINTENANCE CLEANING THE SENSOR Use a warm detergent solution and a soft brush or pipe cleaner to remove oil and scale. Isopropyl alcohol can also be used to remove oily films. Avoid using strong mineral acids to clean conductivity sensors. CHECKING MODEL 140 RETRACTION RESTRAINT The integrity of the Mod ...
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Emerson 140 - page 10
10 MODEL 140,141, and 142 sensors ACCESSORIES PN Description 23724-00 Ball valve kit for Model 140 sensor 23730-00 Process compression fitting kit (3/4-inch NPT) for Model 140 sensor 23731-00 Process fitting rebuild kit for Model 140 sensor (includes ferrule, split ring, O-ring, lubricant) 9310120 Junction box compression fitting for Model 140 sens ...
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Emerson 140 - page 11
11 TROUBLESHOOTING PROBLEM PROBABLE CAUSE SOLUTION Off-scale reading Wiring is wrong. V erify wiring. T emperature element is open or shorted. Check temperature element for open or short circuits. See Figure 14. Sensor is not in the process stream. Be sure the sensor is completely submerged in the process stream. Sensor has failed. Perform isolatio ...
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Emerson 140 - page 12
Credit Cards for U.S. Purchases Only . The right people, the right answers, right now . ON-LINE ORDERING NOW A V AILABLE ON OUR WEB SITE http://www .raihome.com Specifications subject to change without notice. 8 Emerson Process Management 2400 Barranca Parkway Irvine, CA 92606 USA T el: (949) 757-8500 Fax: (949) 474-7250 http://www .raihome.com © ...
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