Pressure Measurement With Ap Transmitter; Figure 47 Typical Piping Arrangement For Pressure Measurement With Ap Type Transmitter; Table 44 Starting Up Ap Transmitter For Pressure Measurement With Sfc - Honeywell ST 3000 User Manual

7.10

Pressure Measurement with AP Transmitter

Procedure
Figure 47 Typical Piping Arrangement for Pressure Measurement with AP Type Transmitter.
Process
ATTENTION
Table 44 Starting Up AP Transmitter for Pressure Measurement With SFC
Step Press Key
1
2
3
DE READ
A
ID
146 ST 3000 Release 300 and SFC Model STS103 User's Manual
The procedure in Table 44 outlines the steps for starting up an absolute
pressure (AP) type transmitter in a pressure measurement application.
Refer to Figure 47 for the piping arrangement identification and Figure
38 for typical SFC and meter connections.
Pipe
Shut-off
valve no.1 Plug
Shut-off
valve no.2
Tee connector
For AP transmitters, you can only verify that the input and output
readings correlate.
Read Display or Action
Connect SFC across loop wiring and
turn it on. If possible, locate SFC where
you can also view receiver instrument in
loop. If you want to verify transmitter
output, connect a precision milliammeter
or voltmeter in loop to compare
readings.
Set process pressure to zero level
T A G N O .
T R I P S S E C U R E D ?
Union
For additional overrrange protection, use
Sprague engineering type gauge saver or
Fairchild model 95 gauge guard (style 1)
See Figure 38 for sample SFC and
meter connections in a typical
analog loop with a differential
pressure type transmitter.
Allow system to stabilize at zero
pressure.
Be sure any switches that may trip
alarms or interlocks associated with
?
analog loop are secured or turned
off.
Absolute
Pressure
Transmitter
Description
Continued on next page
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