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ISC/Oldham OLC20 Series - Page 29

ISC/Oldham OLC20 Series
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29
Continuous temperature range
-25°C to +55°C
Humidity range
0% RH to 95% RH
Pressure range
1 bar ± 10%
Linearity variance (methane scale)
Between 0% and 70% LEL: 1%
LEL
Between 70% and 100% LEL: 7%
LEL
Measurement reproducibility
± 2% of the value measured, or ± 1
LEL (or ± 0.05% CH4)
Long-term drift
in normal
operating
conditions
Zero point:
Sensitivity:
Methane
Propane/Butane
< 5% methane LEL per year
Typical drift values
< 20% of the value measured per
year
< 10% of the value measured per
year
Effect of humidity (10% to 90% RH) at
40°C
± 5% of relative sensitivity
Maximum recommended interval
between calibrations (normal operating
conditions)
6 months
Calibration concentration 30– 80% LEL
Response time
(may vary ± 10%
between sensors)
gas and
concentration
injected
Methane
(50%
LEL)
Hydrogen
(50%
LEL)
Pentane
(52%
LEL)
Styrene
(45%
LEL)
t25 4 sec 3 sec 8 sec 12 sec
t50 8 sec 6 sec 12 sec 40 sec
t90 15 sec 10 sec 27 sec 60 sec

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