Ampcontrol Pty Ltd
– ABN 28 000 915 542
GG2 DISPLAY USER MANUAL
GG2B023 Version 3
– JUNE/19
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 33 of 82
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CAUTION!
The response test may trigger alarms and setpoint flags.
Table 7: Response time determination
Instrument
Test Gas
AS/NZS 60079.29.1:2008
Approximate
T90 value
T90 Time
GG2 Detector NDIR CH4 5%
2% CH4 mixed with
Synthetic Air
or 100% Nitrogen
1.8%
<=30s
GG2 Detector CAT CH4 5%
2% CH4 balance with
Synthetic
Air
1.8%
<=30s
Instrument
Test Gas
AS 4641:2007
Approximate
T90 value
T90 Time
GG2 Detector EC CO 100ppm
50ppm CO balance with
Synthetic Air
45ppm
<=60s
GG2 Detector EC CO 50ppm
25ppm CO balance with
Synthetic Air
22.5ppm
<=60s
GG2 Detector EC O
2
25%
100% nitrogen
2.09%
<=60s
GG2 Detector EC CO
2
5%
2.5% CO2 mixed with
Synthetic
Air
or 100% Nitrogen
2.25%
<=60s
GG2 Detector EC CO
2
2%
1% CO2 mixed with
Synthetic Air
or 100% Nitrogen
0.9%
<=60s
1. Access the GG2 maintenance menu via the display UI using the magnetic calibration tool. Refer
to Section 6.1 for an overview of navigating the user interface and the menu structure.
2.
Access the “RESPONSE TEST” menu. Refer to Figure 15.
Figure 28: Response Test - Target Entry
3. Enter the gas concentration of your test gas. Refer to Section 6.1.2.2 for guidance. Press the
centre segment to proceed.
