Table 33 Starting Up Gp Transmitter For Pressure Or Liquid Level Measurement; Figure 33 Typical Piping Arrangement For Liquid Level Measurement With Gp Type Transmitter - Honeywell ST 3000 User Manual

Figure 33 Typical Piping Arrangement for Liquid Level Measurement with GP Type
ATTENTION
For the procedure in Table 33, we are assuming that piping arrangement includes a block-off
valve and a Tee-connector. If your piping does not include a Tee-connector, you can only
verify that the input and output readings correlate.

Table 33 Starting Up GP Transmitter for Pressure or Liquid Level Measurement

Step
1 Connect communicator across loop wiring; turn it on and establish communications. If
possible, locate communicator where you can also view receiver instrument in control loop. If
you want to verify transmitter output, connect a precision milliammeter or voltmeter in loop to
compare readings.
Refer to Figure 27 for sample communicator and meter connections in a typical analog loop
with a differential pressure-type transmitter.
2 Close block-off valve.
Refer to Figure 32 or Figure 33 for sample piping arrangement.
3 Remove plug from Tee-connector to vent it to atmosphere, if applicable.
Allow system to stabilize at static pressure.
4 At "Online" menu, read applied input pressure (PV) which should be zero.
Also read PV analog output which should be 4 mA to correspond with 0% output.
5 Optional (read output in % of range): From "Online" menu, step through the following menu
selections:
Device setup
•
Process variables
•
At "Process variables" display, read 0% output for corresponding input pressure. Check that
milliammeter reading is 4 mA (0%) output
10/05
7— Start-up - Pressure or Liquid Level Measurement with GP Transmitter
Block-off
valve
Tap location at the minimum
level to be measured
Transmitter.
ST 3000 HART Transmitter Release 300 User Manual
To Process Head
connection on
meter body
Action
Gauge
Pressure
Transmitter
79