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NCP-300S

Catalytic single-header pellistor flammable Gas Sensor for Industrial Environments

NCP-300S flammable gas sensor

Specifications

Detectable Gas:

Detection range:

Voltage supply:

Current drawn:

Minimum Sensitivity:

Zero Offset (20°C):

Response time (90%):

Accuracy:

Expected lifetime:

Long Term Span Drift:

Long Term Zero Drift:

All Flammable Gases

0 – 50% LEL

2.0V +/- 0.1V

300mA +/- 20 mA

40mV / % CH4

0mV +/-  30mV

< 8 seconds

+/- 1% LEL

> 3 years

<+/- 2% FSD/ month

<+/- 0.5mV / month

Operating Conditions

Operating temperature:

Humidity range:

Pressure:

Temperature Drift (zero):

Linearity:

-20 +60°C

0 – 95% RH

0.9 – 1.1 atm

<+/- 2% LEL

Effectively linear to 0-50% LEL

General Description:

The Nemoto NCP-300S is a catalytic (pellistor) type flammable gas sensor supplied as a matched pair of elements mounted on a single headers and protected by a metal mesh.  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.

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Designed as a sensing platform for use in fixed flammable gas detection systems, the NCP-300S exhibits excellent long term zero and sensitivity stability and a high level of resistance to catalytic poisons. The device is intended as a lower cost alternative to the twin header NCP-300 and so is particularly suitable where where 2V, 300mA operation, with good performance at low cost, is essential.

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The sensor also exhibits significantly higher signal output than its twin header cousin, giving higher accuracy at low gas levels, with good linearity to 60% LEL.

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  •        Measures flammability directly

  •        Highly resistant to Catalyst poisons

  •        Resistant to shocks and vibration

  •        Effectively Linear output to 50%LEL

  •        Specific to flammable  gases

  •        Unaffected by Humidity

  •        Very Simple circuitry

  •        Very Low Long term drift
     

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