NAP-56A Catalytic (Pellistor) Flammable Gas Sensor
General Description
The Nemoto NAP56A is a new, improved low cost catalytic flammable gas sensor. Closely related to the very popular NAP-55A sensor, the NAP-56A uses exactly the same sensing elements, but the enclosure in which they are mounted employs a nickel plated brass mounting cap and a phenolic resin header, instead of the Nylon 66 material used in the NAP-55A. As a result, the sensor exhibits an increased sensitivity output and an increase in useful temperature range, whilst being very slightly larger in dimensions, compared to the NAP-55A.
The wider temperature range enjoyed by the NAP-56A device makes it particularly useful in Instruments designed for Caravans and other Recreational Vehicles.
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Specifications |
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Detectable gas: |
All Flammable (explosive) Gases and Vapours |
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Range |
0 – 50%LEL |
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Recommended Voltage |
2.6V +/- 0.25V |
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Current Drawn |
170 +/- 10mA |
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Zero Offset |
0mV +/- 35mV |
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Output Sensitivity |
15-23mV @3000ppm CH4 |
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Repeatability |
+/- 0.5mV |
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Response Time (T90) |
8 secs |
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Maximum Long Term Drift |
<+/- 2mV/year <+/- 2%/month |
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Expected Lifetime in the field |
>5 years |
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Operating conditions |
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Temperature Range |
-20°C to +70°C |
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Humidity |
0-95%RH, non-condensing |
