H2S-B4 Hydrogen Sulphide Sensor

H2S Gas Sensor, Electrochemical, B-Series, 0–100 ppm H2S with ppb‑level resolution

Reliable gas detection for environmental monitoring and safety-critical detection.

Alphasense H2S-B4 sensors provide reliable hydrogen sulphide monitoring for portable and fixed gas analyzers, in environmental, industrial safety, process or biogas applications where fast response and stability are critical. The H2S-B4 sensor’s large‑format 4‑electrode design is ideal for fixed ppb‑level monitoring in industrial, fenceline and environmental applications.
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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Warranty

H2S-B4

Hydrogen Sulphide (H2S)

B-Series 4-electrode

0–100 ppm H2S with ppb‑level resolution

1,450 to 2,600 nA / ppm

< 60s

24 months

 

Feature

Benefit

4‑electrode B‑Series design

Provides very high output for low‑level H2S detection in fixed systems. 4th electrode for baseline compensation

PPB-level resolution

Supports environmental and fence‑line applications requiring low detection limits

Robust industrial construction

Suitable for outdoor installations and high‑humidity environments

Long operational life

Reduces maintenance and replacement cycles in continuous monitoring systems

Fast response for rapid alarm triggering

Supports timely alarms in safety-critical environments

Proven stability across temperature and humidity ranges

Delivers consistent performance in real-world conditions

Long operational lifetime

Helps reduce maintenance and replacement frequency for OEMs and end users