Specifications

Recommended Voltage:               2.0V  +/- 0.1V
Current Drawn:                              175 +/- 20mA
Zero Offset:                                   0mV +/- 25mV
Minimum Sensitivity:                    20mV/1%CH4
Range:                                             0-100% LEL
Accuracy:                                   +/- 1%LEL(CH4)
Maximum Long Term Drift:
Span:                                    < +/- 1% LEL/Month
Zero:                                         <+/- ½ mV/Month
Time Response:                 T50: 3 sec  T90: 8 sec
Temperature Range:                     -20°C to +70°C
Temperature Drift:                      (-20°C to +70°C)
Zero:                                                 < +/-3%LEL
Humidity:                   0-100%RH, non-condensing
Humidity Response:                           +/- 2%LEL
Linearity:                   Effectively linear to 60%LEL

The Nemoto NP-17 is a catalytic (pellistor) type flammable gas sensor supplied as a matched pair of elements mounted on TO4 size headers and protected by a metal 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 sensing platform for use in fixed flammable gas detection systems, the NP-17 exhibits excellent long term zero and sensitivity stability and a high level of resistance to catalytic poisons. The device is compatible with a wide range of commercially available Gas Detection Systems and remote flammable gas detection heads.

The highly automated manufacturing procedure employed by Nemoto results in a repeatable reliable sensor which, unlike similar devices, requires no trimming resistor to enable the detector to be matched with a compensator.

Datasheet
(PDF)

Performance
Information
(PDF)