Ampcontrol Gasguard 2 GG2 DETECTOR - Catalytic CH4 Specifications

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 32 of 39
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– NOT TO BE
REPRODUCED IN PART
7.5 Catalytic CH
4
Electrical
Supply Voltage
10 - 16.5VDC
Maximum Power
Consumption
1W
Mechanical & Environmental
Dimensions (H x W x D)
86.5mm x 85mm x 93mm
Weight
1kg
IP Rating
IP54
Humidity Range
0% to 95% r.h. non-condensing
Temperature Range
-20˚C to + 40˚C
Pressure Range
±20kPa
Response Time (t90) via
diffusion
<30 seconds
Warm-up Time
<5 mins (60 seconds typical)
Stabilization time
(for calibration
adjustments)
3 mins
Sensor Unit
Detection Method
Catalytic
2
Calibrated Range
0-5%
Accuracy
±0.1% v/v or ±5% of indication
1
Drift
±0.1% v/v or ±5% of indication
1
over 3 months
Repeatability
±0.1% v/v or ±5% of indication
1
Sensing Element Life
>24 months
Resolution
0.01% v/v
3
Certification
IECEx
IECEx TRA 16.0020X
DPI
MDR 0001030 GD
1
Whichever is greater
2
Catalytic sensors require oxygen to operate
3
The output measurement resolution is consistent across all gas types and does not infer the accuracy of
the gas type
Table 13: Cross sensitivity of catalytic methane gas sensors
Test Gas Mixture
Instrument Variance From
Standard Test Gas
2% Methane + 13% Oxygen in Nitrogen
±0.2% Methane
2% Methane + 5% Carbon Dioxide in Air
±0.2% Methane
2% Methane + 0.075% Ethane in Air
±0.2% Methane
2% Methane + 0.020% Ethane in Air
±0.2% Methane