Ampcontrol Gasguard 2 GG2 DETECTOR - Ndir Co; Table 14: Typical Carbon Monoxide Cross-Sensitivity

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GG2 DETECTOR USER MANUAL
GG2B011 Version 3 – June/19
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– NOT TO BE
REPRODUCED IN PART
7.4 NDIR CO
2
Electrical
Supply Voltage
10 - 16.5VDC
Max power
Consumption
0.1W
Mechanical and Environment
Dimensions (H x W x D)
86.5mm x 85mm x 93mm
Weight
1kg
IP Rating
IP54
Humidity Range
15% to 90% r.h. non-condensing
Temperature Range
-20˚C to + 40˚C
Pressure Range
±20kPa
Response Time (t90)
via diffusion
<60s
Warm-up Time
<5 mins (60 seconds typical)
Stabilization time
(for calibration
adjustments)
3 mins
Sensor Unit
Detection Method
NDIR
Calibrated Range
0-2%
0-5%
Accuracy
±0.05 v/v over the range 0% to 0.5%
10% of applied test gas over the range 0.5% to 2.5%
±0.25 v/v over the range 2.5% to 5%
Drift
±0.05 v/v % v/v or ±5% of indication
1
over 3 months
Repeatability
±0.05 v/v
Sensing Element Life
>5 years
Resolution
0.01% v/v
2
Certification
IECEx
IECEx TRA 16.0020X
DPI
MDR 0001030 GD
1
Whichever is greater
2
The output measurement resolution is consistent across all gas types and does not infer the accuracy of
the gas type
Table 12: Typical Carbon Monoxide Cross-Sensitivity
Test Gas Mixture
Instrument variance from
Standard Test Gas
0.5% CO2 + 5% Methane in Air
±0.05% CO2
0.5% CO2 + 0.01% Hydrogen in Air
±0.05% CO2
0.5% CO2 + 10% Oxygen in Nitrogen
±0.05% CO2
0.5% CO2 + 10 ppm Hydrogen Sulphide in Air
±0.05% CO2
0.5% CO2 + 5% Carbon Dioxide in Air
±0.05% CO2
0.5% CO2 + 5% Nitric Oxide in Air
±0.05% CO2
0.5% CO2 + 5% Nitrogen Dioxide in Air
±0.05% CO2