GE PACE5000, Calibration Manual

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K0450 Revision B 4 [EN] English
6 Calibration Check (All Ranges)
Note: The PACE adds the barometric reading to a gauge range to produce an absolute range.
6.1 Procedure
Set the calibrator to measure mode:
1 Connect calibration standard for the pressure range to be checked.
2 Press Task and select Basic .
3 With the pressure standard connected to the correct pressure port, select Measured
Pressure and press Range to select the gauge pressure range to be checked.
4 Barometric pressure can be displayed in the status area.
5 Set maximum displayed resolution.
Gauge ranges should be zeroed immediately prior to a calibration check, as follows:
1 Press Measured Pressure/Zero to zero the selected range.
2 On completion of the zero operation, the display shows Zero completed successfully.
3 Adjust calibration pressure to the first pressure value and wait until this pressure, as
displayed on PACE, is stable to less than 10ppm (0.001%). Display filtering may be
required.
4 Compare the pressure value on the calibration standard to the value displayed and
record the difference.
5 Repeat (3) and (5) for each pressure, as prompted by the PACE.
6 If the recorded difference exceeds the permissible deviation for the selected range, the
calibrator requires a calibration adjustment for that range. Refer to PACE sales data
sheets for permissible precision deviation. Precision specification is used if less than 24
hours since adjustment using the same calibration equipment. If greater than 24
hours, then the PACE specification is the sum of precision and long term stability.
7 Select the next pressure range for a calibration check.
8 After completing all calibration checks, adjust calibration standard to atmospheric
pressure.
9 Disconnect calibration standard from the output.
If no further calibration is required, switch off the PACE.