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NAP-50
and NAP-55 Catalytic Gas Sensors
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Specifications
Recommended Voltage: 2.5V +/- 0.25V
Current Drawn: 170 +/- 10mA
Zero Offset: 0mV +/- 35mV
Minimum Sensitivity: 30mV/% CH4/Air
Range: 0-50% LEL
Accuracy: +/- 1%LEL(CH4)
Maximum Long Term Drift:
Span: < +/- 1% LEL/Month
Zero: <+/- ½ mV/Month
Response Time: T50: 3 sec T90: 8 sec
Temperature Range:
-10°C to +50°C
Temperature Drift:
(-10°C to +50°C)
Zero: < +/-2%LEL
Humidity: 5-90%RH, non-condensing
Humidity Response: +/- 2%LEL
Linearity:
Effectively linear to 50%LEL
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The Nemoto NAP-50A
and NAP55A are catalytic (pellistor) type flammable gas sensors supplied
as matched pairs of catalytic elements mounted on a single header
enclosed in a plastic housing and protected by a metal mesh. Designed as
a gas sensor for use in Domestic (Residential) Gas Detectors, the
sensor detects and measures the presence of flammable gases and vapours
in air, in the range 0-50% of the Lower Explosive Limit (LEL) of the gas
or vapour being measured.
The
highly advanced and efficient production techniques developed by Nemoto
means that the cost of technically superior pellistor technology,
usually reserved for Industrial Applications, is now appropriate low
enough for them to be used for domestic gas detectors, which have
hitherto tended to use less expensive, but
less stable and less selective semiconductor type gas sensors.
The performance of the NAP-50A is fully compliant
with internationally recognised standards for domestic explosive as
detection, such as EN-50194
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PDF
document
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Characterization
file
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Updated on
September 06, 2006
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