Copyright 2010 Baker Hughes Company.
English–PACE Calibration Manual | 13
8. Calibration Adjustment A2 - Control Modules
Note: Zeroing the Reference Sensor is not necessary for calibration adjustment as this is reset
automatically during the adjustment process.
1. Do a calibration check (Section 6 steps (1) to (5) and (8) to (14)) on the Barometer first. If the
recorded difference is more than the permitted deviation then the Barometer must be
adjusted (see Section 7).
2. Do the steps in Section 7 Calibration Adjustment A1.
9. Calibration Check B - PACE Indicators
Note: The PACE adds the barometric reading to a gauge range to produce a pseudo-absolute
range. The PACE subtracts the barometric reading from an absolute range to produce a pseudo-
gauge range.
Note: Use the Calibration check mode, as this removes any addition pressure processing
enabled by the user.
For PACE calibration menus, refer to Appendix A.
To check the calibration of PACE:
1. Connect the PACE to the pressure calibration standard. See Section 5.
2. With the pressure calibration standard connected to the correct pressure port, select the
measured pressure and select Range to select the pressure range to be checked.
3. For gauge ranges (IPS sensors), apply zero pressure to the UUT.
a. Select the measured pressure then Zero to set the selected gauge range to zero.
b. On completion of the zero operation, the display shows ‘Zero completed successfully’.
4. Select the measured pressure then Global Setup > Calibration and enter the Calibration
PIN (4321).
5. Select Sensor Correction.
6. Select the pressure sensor to be checked or corrected.
7. Select Calibration Check.
8. Adjust the applied calibration pressure to the first pressure value and wait until this pressure,
shown on PACE is stable to less than 5 ppm (0.0005%) for IPS sensors and below (aim for
1 ppm (0.0001%) on IRS3 and TRS3 (Tallis)). The standard deviation of the measured
pressure is shown on the screen in the pressure units to help with measuring the deviation
in pressure.
9. Compare the pressure value on the pressure calibration standard to the value shown on the
PACE and record the difference.
INFORMATION This adjustment is for Control Modules CM3 and CM3-B at 8
bar absolute and above.
CM3 and CM-3B control modules both have barometers that need calibration
check and if required adjustment.
INFORMATION This check is for PACE1000 and PACE Tallis.
Zero the gauge ranges (PACE1000 IPS) immediately prior to a calibration check.
For PACE1000 and PACE Tallis 8 bar absolute ranges and above, zero the main
sensor. See the user manual.
Zeroing is not necessary for PACE1000, PACE Tallis 2 bar and 3.5 bar absolute
ranges.
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