Pressure Measurement With Ap; Figure 34 Typical Piping Arrangement For Pressure Measurement With Ap Type Transmitter - Honeywell ST 3000 User Manual
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Step
8,
When the display above appears, choose Exit, then press ENTER.
cont'd
Return the loop to automatic control.
9
Close Tee-connector and slowly open block-off valve to apply process pressure to transmitter.
10
Take communicator and milliammeter readings to check that output signal does correspond to
zero and full-scale pressures.
If readings do not correspond, check that transmitter has been installed correctly. If applicable,
blow down piping to be sure no foreign matter is entrapped in it.
Check communicator and milliammeter readings again. If readings are still not correct, verify
transmitter's configuration data and change its range setting if needed.
11
Remove communicator and milliammeter from loop.
Pressure Measurement with AP
Procedure
The procedure in Table 34 outlines the steps for starting up an absolute pressure (AP). type transmitter in a
pressure measurement application. Refer to Figure 34 for the piping arrangement identification and
Figure 27 for typical communicator and meter connections.
Process
Figure 34 Typical Piping Arrangement for Pressure Measurement with AP Type
10/05
Shut-off
Pipe
Plug
valve no.1
Shut-off
valve no.2
Tee connector
Transmitter
ST 3000 HART Transmitter Release 300 User Manual
7— Start-up - Pressure Measurement with AP
Action
Union
For additional overrrange protection, use
Sprague engineering type gauge saver or
Fairchild model 95 gauge guard (style 1)
Absolute
Pressure
Transmitter
81
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