NEMOTO ENVIRONMENTAL TECHNOLOGY
 GAS SENSORS FOR INSTRUMENT MAKERS WORLDWIDE

     
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NP-18SM  Pellistor Gas Sensor


Specifications

Recommended Voltage: 

    2.6V  +/- 0.1V

Current Drawn:

  170 +/- 20mA

Zero Offset: 

   0mV +/- 30mV

Minimum Sensitivity:  

  20 mV/1%CH4

Standard Range:      

     0-100% LEL

Accuracy:     

       +/- 1%LEL(CH4)

Maximum Long Term Drift:

 

    Span:

 < +/- 5% LEL / 3 Months

    Zero:

  <+/- ½ mV/Month

Response Time:     

T50: 3 sec  T90: 8 sec

Temperature Range:

-20°C to +70°C

Humidity:

0-100%RH, non-condensing

Humidity Response:

   +/- 2%LEL

Linearity:

Effectively linear

  to +/- 5%


The Nemoto NP-18SM 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 detects and measures the presence of flammable gases and vapours in air, in the range 0-100% of the Lower Explosive Limit (LEL) of the gas or vapour being measured.

Designed as a lower cost alternative to the twin-header NP-18 device, the NP-18SM may be used as the sensing platform in fixed flammable gas detection systems.

Datasheet
(PDF)

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