Emerson 141 user manual

User manual for the device Emerson 141

Device: Emerson 141
Category: Stud Sensor
Manufacturer: Emerson
Size: 0.41 MB
Added : 8/28/2013
Number of pages: 12
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Abstracts of contents
Summary of the content on the page No. 1

Instruction Sheet
Models 140, 141, and 142
PN 51A-140/rev.E
December 2010
Conductivity Sensors
For additional information, please visit our website
at www.emersonprocess.com/raihome/liquid/.
CAUTION
CAUTION
SENSOR/PROCESS
BEFORE REMOVING THE SENSOR, be
APPLICATION COMPATIBILITY
absolutely certain the process pressure is
The wetted sensor materials may not be compatible reduced to 0 psig and the process tempera-
with process com position and operating conditions.
ture is at a safe level!
Appli

Summary of the content on the page No. 2

MODEL 140,141, and 142 sensors INSTALLATION INSTALLATION 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. Trapped bubbles will cause errors. As bubbles accumulate, the conduc- FIGURE 1. Sens

Summary of the content on the page No. 3

MODEL 140,141, and 142 sensors INSTALLATION INSTALLATION – 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 3. DWG. NO. REV. 40014204 B FIGURE 3. Installing model 141 sensor INSTALLATION – 142 SENSOR 1. Install the sensor in a 3/4-inch NPT weldalet or in a 1-inch pipe tee. See Figure 4. 2. Remove the plastic shipping ca

Summary of the content on the page No. 4

MODEL 140 SERIES 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. CABLE 9 8 7 6 5 GRAY 4 GRAY 3 2 1 Figure 5. Sensor junction box wiring. Terminals in the junction box are not numbered. 141 and 142 sensors have one gray wire (shown). The 140 sensor has two gray wires attached to the terminal. WIRE COLOR AND CONNECTIONS IN SENSOR COLOR FUNCTION Gray Connects to o

Summary of the content on the page No. 5

MODEL 140,141, and 142 sensors WIRING FIGURE 9. Model Xmt-C-11 Wiring (Pipe or Wall) FIGURE 8. Model Xmt-C-10 Wiring (Panel) TB2 TB1 RTN WHITE RCV B SENSE WHITE/RED RCV A RTD IN RED CLEAR RSHLD SHLD DRVB CLEAR GRAY ORANGE DRVA CLEAR DSHLD FIGURE 10. Model 1066 Wiring FIGURE 11. Model 5081C Wiring FIGURE 12. Model 6081-C Wiring 5

Summary of the content on the page No. 6

MODEL 140,141, and 142 sensors WIRING RETRACTING AND INSERTING THE MODEL 140 SENSOR CAUTION Model 140 sensors are retractable. BEFORE RETRACTING THE SENSOR, be absolutely certain the process pressure is less than 100 psig (791 kPa abs) and the process temperature is at a safe level! 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 com

Summary of the content on the page No. 7

MODEL 140,141, and 142 sensors WIRING 3. Slowly open the valve. WARNING Stand clear of the sensor. 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. Tighten sensor compression fitting nut. CAUTION allation of the sensor, tighten the com- ter finger tight. If it is a reinstallation, tional tu

Summary of the content on the page No. 8

MODEL 140,141, and 142 sensors CALIBRATION CALIBRATION Model 140 sensors are not calibrated at the factory. The cell constant on the label is a nominal value only. The true cell constant can differ from the nominal value by as much as ±5%. For improved accuracy, calibrate the sensor using either a solution of known conductivity or a referee meter and sensor. If using a standard solution, choose one having conductivity in the recommended operating range for the sensor cell constant. Refer to the

Summary of the content on the page No. 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 Model 140 will become compromised is the flared tip of the electrode is allowed to blow out against the compression fitting body. In the even a blowout occ

Summary of the content on the page No. 10

MODEL 140,141, and 142 sensors ACCESSORIES REPLACEMENT PARTS 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 sensor 9550200 O-ring, 2-116, Viton for Model 140 sensor 3001882 Process compression fitting (3/4-inch NPT) for Model 142 sensor Junction

Summary of the content on the page No. 11

MODEL 140,141, and 142 sensors TROUBLESHOOTING TROUBLESHOOTING PROBLEM PROBABLE CAUSE SOLUTION Off-scale reading Wiring is wrong. Verify wiring. Check temperature element for open or Temperature element is open or shorted. short circuits. See Figure 14. Be sure the sensor is completely submerged Sensor is not in the process stream. in the process stream. Sensor has failed. Perform isolation checks. See Figure 15. Noisy reading Sensor is improperly installed in the Be sure sensor is completely

Summary of the content on the page No. 12

The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE 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


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