Copyright 2010 Baker Hughes Company.
English–PACE Calibration Manual | 11
8. Select
Accept
to store the first value and the display goes to the next pressure value to be
set.
9. Select
Repeat
to re-apply the same pressure and
Quit Calibration
to exit the calibration of
this pressure range.
10. Repeat steps (6) to (8) for the next value.
11. Carry out a calibration check to verify this procedure. Refer to Section
6.
12. After completing the calibration procedures, adjust the pressure calibration standard to
atmospheric pressure. Disconnect the pressure calibration standard from the PACE.
13. If no further calibration is required, switch off the PACE.
8. Calibration Procedure for CM3 8
bar Absolute and
Above Ranges
1. Carry out a calibration check (Section
6 steps (1) to (5) and (8) to (14)) on the Barometer
first. If the recorded difference exceeds the permissible deviation then the Barometer must
be adjusted (see Section
7).
Note:
If stability is difficult to maintain then the home screen (showing pressure readings)
can be used with 7
digits. If the number of digits is reduced, then the error due to reduced
resolution must be considered with respect to the error budget.
2. Carry out an atmospheric zero on the CM3 reference sensor as per Section
6 of the user
manual K0443 prior to the calibration check. This will zero the reference sensor against the
barometer to remove any drift.
3. Carry out steps (1) to (5) and (8) to (15) of Section
6 for the reference sensor. Note that the
gauge control sensor does not require calibration on CM3 units.
Note:
To enable the barometric reading, select the Status Area > Global Setup > Display > Status
Area > Barometric. It is important to consider that this step is not possible with the barometer
unless the CM3-B option is enabled in the module identity window within the engineering menu
(only accessible by Druck service centers). If this option is not available then skip step (2).
9. Recommended Calibration Check Points
9.1 Barometric Variant
750 mbar
900 mbar
950 mbar
1050 mbar
1150 mbar
1050 mbar
1000 mbar
950 mbar
900 mbar
750 mbar
