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Emerson 228 manual

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Table of contents for the manual

  • Page 1

    Model 228 Submersion/Inser tion T oroidal Sensor Instruction Sheet PN 51A-228/rev .P December 2010 SPECIFICA TIONS - SENSORS MODEL Wetted Materials T emperature Pressure CRN pressure* 228-02 PEEK (glass-filled) 248°F (120°C) 295 psig (2135 kPa abs) 220 psig (1618 kPa abs) 228-03 PEEK (glass-filled) 392°F (200°C) 295 psig (2135 kPa abs) 220 psig[...]

  • Page 2

    MODEL 228 INST ALLA TION INST ALLA TION Keep at least 1 in. (2.5 cm) between the sensor and pipe walls. If the clearance is too small, calibrate the sensor in place. Ensure that the sensor is completely submerged in liquid. Mounting the sensor in a vertical pipe run with the flow from bottom to top is best. If the sensor must be mounted in a horizo[...]

  • Page 3

    3 MODEL 228 WIRING FIGURE 6. Wiring 228-54 and 228-56 sensors to Model 54eC analyzer FIGURE 5. Wiring 228-54 and 228-56 sensors to Model 1056 and 56 analyzers[...]

  • Page 4

    MODEL 228 WIRING FIGURE 7. Wiring 228-54 and 228-56 sensors to Model Xmt-T p anel mount transmitter FIGURE 8. Wiring 228-54 and 228-56 sensors to Model Xmt-T pipe/wall mount transmitter 4[...]

  • Page 5

    5 MODEL 228 WIRING FIGURE 9. Wiring 228-54 and 228-56 sensors to Model 1066 transmitter FIGURE 10. Wiring 228-54 and 228-56 sensors to Model 5081-T transmitter RCV B RCV A RSHLD DRV B 228-54 RTN SENSE RTD IN SHLD CLEAR WHITE GREEN BLACK GREEN BLACK WHITE DRV A DSHLD TB1 TB2 RCV B RCV A RSHLD DRV B 228-56 RTN SENSE RTD IN SHLD CLEAR WHITE GREEN BLAC[...]

  • Page 6

    MODEL 228 WIRING FIGURE1 1. 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 2265-54 wiring diagram. For interconnecting cable 23294-04 and 23294-05, use the 226-56 wiring diagram. FIGURE 12. Remote [...]

  • Page 7

    7 MODEL 228 USE OF INSERTION - RETRACTION ASSEMBLIES INSERTION - RETRACTION ASSEMBLIES MANUAL RETRACTION ASSEMBL Y (PN 2331 1-01) INST ALLA TION 1. Loosen the collet nut and retract the sensor tube into the retraction chamber . See Figure 14. 2. Loosen the union nut and separate the retraction chamber from the assembly . 3. Install the retraction c[...]

  • Page 8

    MODEL 228 USE OF INSERTION - RETRACTION ASSEMBLIES FIGURE 14. Manual Retraction Assembly MILLIMETER INCH RETRACTION 1. Make certain that the system pressure is less than 35 psig (342 kPa abs). Push in on the sensor using the top of the junction box. Slowly loosen the collet nut. 2. When the collet nut is loose enough, slowly ease the sensor back so[...]

  • Page 9

    9 MODEL 228 USE OF INSERTION - RETRACTION ASSEMBLIES INST ALLA TION 1. Thread the sensor cable through the tube into the junction box. Screw the sensor into the tube. Hand tighten the sensor an additional half turn once the gas- ket is seated. See Figure 15. 2. T erminate the sensor wiring in the junction box. See Figure 13 for wiring details. 3. U[...]

  • Page 10

    MODEL 228 USE OF INSERTION - RETRACTION ASSEMBLIES 1. Retract the sensor into the retraction chamber and fully close the ball valve. 2. Drain the retraction chamber content s using the 1/8 in. flush ports. 3. (Mechanical) Mark the location of the nut housing cap and retraction collar on the sensor tube. Remove both socket head cup screws from the n[...]

  • Page 11

    11 MODEL 228 USE OF INSERTION - RETRACTION ASSEMBLIES FIGURE 16. Mechanical Retraction Assembly Replacement Part s[...]

  • Page 12

    FIGURE 17. Manual Retraction Assembly Replacement Part s MODEL 228 USE OF INSERTION - RETRACTION ASSEMBLIES 12[...]

  • Page 13

    13 MODEL 228 CALIBRA TION CALIBRA TION The nominal cell constant of the Model 228 sensor is 2.7/cm. The error in the cell constant is about ± 10%, so con- ductivity readings made using the nominal cell constant will have an error of at least ± 10%. W all ef fects, discussed below , will likely make the error greater . For higher accuracy , the se[...]

  • Page 14

    MAINTENANCE Generally , the only maintenance required is to keep the opening of the sensor clear of deposits. Cleaning frequency is best determined by experience. MODEL 228 MAINTENANCE W ARNING Retraction chamber contents may be under pressure. CAUTION Be sure sensor has been cleaned of process liquid before handling. TROUBLESHOOTING PROBLEM PROBAB[...]

  • Page 15

    15 FIGURE 19. Resist ance check. Disconnect leads from analyzer before measuring resist ances. T ABLE 1. T emperature Resist ance 10 ° C 103.9 Ω 20 ° C 107.8 Ω 25 ° C 109.7 Ω 30 ° C 1 1 1.7 Ω 40 ° C 1 15.5 Ω 50 ° C 1 19.4 Ω[...]

  • Page 16

    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 Emerson Process Management 2400 Barranca Parkway Irvine, CA 92606 USA T el: (949) 757-8500 Fax: (949) 474-7250 http://www .raihome.com © Rosemount Analytical Inc. 2010 8[...]