Copyright 2013 Baker Hughes Company.
English–DPI
620G Instruction Manual | 147
Procedures: Pressure Module
c. Check the error is within limits. Refer to Table
12.14 Procedures: Pressure Module
Note:
This procedure is suitable for PM
620, PM
620T or IDOS UPM pressure modules.
Do the procedure as follows:
1. Assemble the pressure indicator with the necessary pressure module.
2. Connect the instrument to the pressure standard.
3. Let the equipment get to a stable temperature (minimum: 1
hour since the last power on).
4. Use the calibration menu (see Section
12.1) to do a two-point pressure calibration (absolute
sensors) or three-point pressure calibration (gauge sensor).
•
-
FS, Zero and +FS for gauge sensors.
•
Zero and +FS for absolute sensors.
Note:
If software version requires a three-point calibration for an absolute sensor, use points
at 0, 50% and +FS or three-point calibration. Refer to Table
Table
12
-
15: AC mV (Measure) Error Limits
Applied AC (mV)
Calibrator Uncertainty (mV)
Permitted DPI
620 Genii Error
(mV)
10
0.12
2.50
500
0.20
3.10
1000
0.28
3.75
2000
0.44
5.00
Table
12
-
16: AC Volts (Measure) Error Limits
Applied AC Volts (V)
Calibrator Uncertainty (V)
Permitted DPI
620 Genii Error
(V)
5
0.0018
0.030
10
0.0026
0.037
20
0.0042
0.050
Table
12
-
17: Calibration Pressures (Gauge Sensors)
Pressure Range
Nominal Applied Pressure mbar (psi)
mbar (psi)
-
FS
a
a. For a three-point calibration, do not apply more than
-
90% of the specified FS for the unit.
Zero
+FS
<
700
mbar (10.0)
-
FS
0
+FS
>
700
mbar (10.0)
-
900 (
-
13.1)
0
+FS
