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TA2-A000-031 Folha de dados(PDF) 7 Page - Magnetrol International, Inc. |
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TA2-A000-031 Folha de dados(HTML) 7 Page - Magnetrol International, Inc. |
7 / 72 page 7 54-631 Thermatel Model TA2 Transmitter Pipe centerline 1" (25 mm) Figure 3 Probe Installation into Pipe or Duct Using a Compression Fitting Figure 4 2.3 Installation 2.3.1 Electronics The instrument is rated for use in Class I, Division 1 and Class I, Division 2 areas. The enclosure is also rated NEMA 4X. Remote electronics (optional) should be installed in an easy to access location within 500 feet (150 meters) of the sensor. The electronics should not be installed in areas where ambient temperature exceeds +175° F (+80° C). If ambient temperature is between -22° to -65° F (-30° to -54° C), the unit will operate but the display will not be readable. Provide watertight seals for all wiring entrances in the enclosure to maintain the NEMA 4X rating. Use appropri- ate NEC section when installing the instrument. NOTE: A switch or circuit breaker should be installed in close prox- imity to the equipment and within easy reach of the operator. It should be marked as the disconnecting device for the equipment. 2.3.2 Probe/Flow Body Proper installation of the probe in the pipe or duct is essential for accurate air or gas flow measurement. Normal procedures for installing any type of flow element should be followed. See Appendix for additional information on probe location. A flow arrow is etched on the sides of the probe to desig- nate flow direction. The instrument is calibrated with the flow in this direction. Ensure that the flow arrow is aligned in the direction of flow. The instrument is unable to recog- nize flow direction if inserted with the flow arrow in the wrong direction. It is generally recommended that the sensor be located in the center of the pipe. This location provides less sensitivity to changes in flow profile. Sensors mounted through com- pression fittings have the ability to field adjust the sensor to the desired location by using the dimensions as shown in Figure 3. It may be necessary to rotate the head of the instrument to view the display while maintaining the proper flow orien- tation. This is accomplished by loosening the set screw on the bottom of the housing, rotating the enclosure to the desired position and re-tightening the set screw. The second set screw is a stop to prevent over rotating the enclosure. See figure 4. |
Nº de peça semelhante - TA2-A000-031 |
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Descrição semelhante - TA2-A000-031 |
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