Typical operating parameters, Accuracy, Operating parameters – Heath Consultants Gasurveyor 500 Series User Manual
Page 45: Parameters, Resolution, Zero stability, Typical operating parameters .....a-1, Typical operating parameters are as follows

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TYPICAL OPERATING
PARAMETERS
Typical operating parameters are as follows:
Gas
Range
Resolution Zero
Accuracy
Range
Stability
LEL
0 to 10%
0.1%
+/- 0.5%
10 to 100%
1%
N/A
2% +/- 1% LEL
Volume
0 to 100%
1%
+/- 2%
1% +/- 1% Gas
Gas
Notes:
All the values above are at normal temperature and pressure.
Humidity is between 0% and 95% RH (non-condensing).
Pressure changes at the inlet and exhaust are minimised as they may cause
transient changes in reading.
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