Low-Cost Electrochemical Toxic Gas Sensors for Residential and Light Commercial Applications

NCP-180S-6S Single Header Catalytic Flammable Gas Sensor



Detectable gas:

All Flammable / Explosive Gases

Detection range:

0 – 100%LEL

Recommended Voltage

2.6V +/- 0.1V

Current drawn

170mA +/- 20 mA

Minimum Sensitivity

20mV / % CH4

Zero Offset

0mV +/-  30mV


+/- 1% LEL

Response time (90%):

< 8 seconds

Maximum Long Term Drift:


<+/- 1% FSD/ month


<+/- ½ mV / month

Temperature Range:

 -20 to +60 degrees C

Temperature Drift (zero)

+/- 2% LEL

Humidity range:

0-95% RH, non condensing


0.9 – 1.1 atm


Effectively linear to 0-100% LEL

General Description:

The Nemoto NCP-180S-6S 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 0-100% of the Lower Explosive Limit (LEL) of the gas or vapour being measured. The sensor is primarily designed for use within Fixed Gas Detection Systems.

The NCP-180S-6S is designed to bring together the performance levels normally expected from Twin Header devices with the cost benefits of single header design. As such we believe the NCP-180S-6S sensor to represent the best value gas sensor of its type on the market today.