General Description

The NT-H2S-1 Cell is a new electrochemical gas sensor with 3 electrodes for the detection of H2S (Hydrogen Sulphide) in the range 0-100ppm in a variety of gas detection applications, both in portable safety instruments and Fixed Gas Detection Systems.

Nemoto's porous electrode technology enables accurate gas detection with high sensitivity. The mechanical design of the sensor gives optimum gas diffusion characteristics, and the hermetically sealed enclosure prevents costly electrolyte leakage.

NT-H2S-1 Specifications

Detectable gas:                                Hydrogen Sulphide

Detection range:                                        0 – 100 ppm

Maximum overload:                                       500 ppm

Output current:                               700 +/- 150 nA/ppm

Zero current:                                   +/- 1ppm equivalent

Reproducibility:                                                  +/- 2%

Output drift in air:                               less than 5%/year

Response time (90%):                              < 20 seconds

Temp. depend. in air:                      <1ppm (-20 to+50°C)

Expected lifetime:                              More than 2 years

Operating conditions

Operating temperature:                   -20 to +50 degrees C

Humidity range:                                         15 – 90% RH

Pressure:                                                  0.9 – 1.1 atm

Recommended resistor:                                    10 ohms

Bias voltage:                                              Not required