Copyright 2010 Baker Hughes Company.
14 | PACE Calibration Manual–English
10. Do steps (8) and (9) again for each pressure.
11. If the recorded difference is more than the permitted deviation (precision) for the selected
range, a calibration adjustment for that range is necessary on the calibrator. Refer to the
PACE Datasheet for permitted precision deviation and accuracy.
Note: If it has been less than 24 hours since calibration, the PACE specification equals the
Datasheet precision specification with respect to the original pressure calibration standard. If it
has been greater than 24 hours since calibration, the PACE specification is the Route-Sum-
Squared (RSS) of the Datasheet precision and the long term stability specification with respect
to the original pressure calibration standard.
12. If no adjustment has been done and the calibration check is within the precision limits, then
the calibration date can be updated by selecting the ‘As Found’ calibration icon.
13. Select the next pressure range for a calibration check.
14. After completing all calibration checks, adjust the pressure calibration standard to
atmospheric pressure.
15. Disconnect the pressure calibration standard from the output.
16. If no further calibration is necessary, de-energize the PACE.
10. Calibration Adjustment B1 - PACE Indicators
For PACE calibration menus, refer to Appendix A.
To adjust the calibration of PACE:
1. Connect the PACE to the pressure calibration standard. See Section 5.
Note: Calibration adjustments may be done in any order. Three calibration points are necessary
for gauge sensors. Two calibration points are necessary for absolute sensors.
2. Select the measured pressure then Global Setup > Calibration and enter the Calibration
PIN (4321).
3. Select Sensor Correction.
4. Select the pressure range to be corrected (PACE controllers only).
5. Select the pressure sensor to be corrected.
6. Select Calibration Adjustment.
7. Adjust the applied calibration pressure to the first pressure value and wait until this pressure,
displayed on PACE, is stable to less than 5 ppm (0.0005%) for IPS sensors and below (aim
for 1 ppm (0.0001%) on CM3). The standard deviation of the measured pressure is displayed
on the screen in the pressure units to aid with measuring the deviation in pressure.
Note: The display also shows throughout this procedure the message ‘Calibrating’ and the
selected pressure range.
8. Use the on-screen keypad to enter the applied pressure, then select the entered value to
save it.
9. The screen will now ask ‘Keep calibration point?’ select the displayed pressure to keep the
calibration used or select the undo icon to renter the applied pressure.
10. Do steps (7) to (9) again for the next value.
11. Select Repeat to re-apply the same pressure and Quit Calibration to exit the calibration of
this pressure range.
INFORMATION This adjustment is for PACE1000 IPS. It is also for IRS and
TRS (Tallis) up to and including 3.5 bar absolute.
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