Specifications

Recommended Voltage:              1.6V  +/- 0.1V

Current Drawn:                             140+/- 10mA

Zero Offset:                               0mV +/- 25mV

Minimum Sensitivity:                 20mV/% H₂/Air

Range:                                          0-100% LEL

Accuracy:                       +/- 100ppm %LEL(H₂)

Maximum Long Term Drift:

   Span:                             <+/- 1% LEL/Month

   Zero:                                 <+/- ½ mV/Month

Response Time:          T50: 12 sec  T90: 40 sec

Temperature Range:                   -20°C to +70°C

Temperature Drift:  (-20°C to +70°C)

Zero:                                            < +/- 2%LEL

Humidity:               0-100%RH, non-condensing

Humidity Response:                        +/- 2%LEL

Linearity:        Effectively linear to 50%LEL  NH₃

The Nemoto NET-2X-AHSM Pellistor Gas sensor head is a stainless steel enclosure supplied fitted with a Nemoto NP-ANSM single header catalytic flammable gas sensor (pellistor). The device is optimised for the detection of Hydrogen 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.

The NET-2X-AHSM is a completely sealed device and is designed to be replaceable in the field complete. The integral sensor is not field replaceable. The enclosure is fitted with an external thread at the front end to allow easy fitting of accessories. A choice of two standard rear mounting threads is offered (x = see thread code)

THE NET-2X-AHS IS ATEX APPROVED
CESI 01 ATEX 066 U

Datasheet
(PDF)