Ampcontrol Pty Ltd
– ABN 28 000 915 542
GG2 DETECTOR USER MANUAL
GG2B011 Version 3
– June/19
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 24 of 39
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5
COMMISSIONING AND CALIBRATION
Commissioning is the performance of initial checks, adjustments and calibration prior to placing the
system in operation for the first time. Calibration, however, is not limited to performance of
commissioning. Calibration is also performed throughout the life of the system on a periodic basis and
after major repairs to the system.
During commissioning and subsequent re-calibration, it is vital to ensure that procedures are followed to
prevent any abnormal sensor signal from initiating any fault, warning or alarm status indicator, or
equipment control function on auxiliary equipment connected to the Detector. Consult the relevant
control unit manual for details of how to do this.
The instruments supplied are NATA calibrated prior to delivery. However, before putting the system into
operation, it is recommended to check the calibration. This is especially important if the instruments are
commissioned sometime after delivery.
5.1 Preliminary Checks
Perform the following preliminary checks:
1. Verify that all connections are correct and installation complete as detailed in Section 4.
2. Check that the correct supply voltage is available to the GG2 Detector.
3. Apply power to the system.
5.2 Calibration
Before the start of calibration, if the GG2 Detector has spent considerable time at low or elevated
temperatures, please allow the device to stabilise to room temperature in powered-up operational (no
fault) state for 24 hours before beginning calibration. If the GG2 Detector has not experienced exposure
to temperature extremes the apparatus should be left in a powered-up operational (no fault) state for one
hour before beginning calibration.
Calibration of sensors can only be achieved by using the appropriate span and zero gas. The volume
fractions of zero and calibration gases components shall be known to a relative uncertainty of ± 2% of
the nominal value.
Refer to GG2B023 GG2 Display User Manual for an overview of calibration and testing procedures.
Calibration gas should be applied to the sensor at a rate of 0.5 to 1.0 litres per minute, using the GG2
Calibration Cup. Allow sufficient time, for sensor to stabilize before adjustment.
CAUTION!
GG2 Detectors should be tested regularly to verify proper operation. AS
2290.3 provides guidance depending on the application.
CAUTION!
GG2 Detectors should be NATA calibration at least every 6 months to
ensure their proper operation.
