NEMOTO ENVIRONMENTAL TECHNOLOGY
 GAS SENSORS FOR INSTRUMENT MAKERS WORLDWIDE

     
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NP-ANSM  Pellistor Gas Sensor


Specifications

Recommended Voltage: 2.2V  +/- 0.1V
Current Drawn:  165 +/- 15mA
Zero Offset: 0mV +/- 30mV
Minimum Sensitivity: 23mV/1%NH3
Range: 0-100% LEL
Minimum Range 0-10,000ppm
Accuracy: +/- 1%LEL(NH3)
Maximum Long Term Drift:
Span: < +/- 5% Signal/3 /Month
Zero: <+/- ½ mV/Month
Response Time:  T50: 3 sec  T90: 8 sec
Temperature Range:  -20°C to +60°C
Temperature Drift:   (-20°C to +70°C)
Zero:  < +/-2%LEL
Humidity:  0-100%RH, non-condensing
Humidity Response:   +/- 2%LEL
Linearity:   Effectively Linear


The Nemoto NP-ANSM is a catalytic (pellistor) type flammable gas sensor supplied as a matched pair of pellistor elements mounted on a single header and protected by a metal mesh enclosure and can.

The sensor is optimised for the detection of ammonia in air in range 0-100% LEL but is stable and sensitive enough to be used for ranges as low as 0-10,000ppm, with alarm levels as low as 2,000ppm without false alarms, provided good quality circuitry is employed. A feature of the NP-ANSM is its very high selectivity to ammonia, the sensitivity of the device to hydrocarbon gases being negligible. The NP-ANSM may be used as the sensing platform in fixed flammable gas detection systems.

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Datasheet
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