COH-H2 Dual Carbon Monoxide / Hydrogen Sulphide Sensor

CO & H2S 2-Gas Sensor, Electrochemical, H-Series, CO: 0–1000 ppm; H2S: 0–100 ppm

Reliable multi-gas detection for safety-critical monitoring and process control.

Alphasense CO / H2S sensors provide reliable 2-gas monitoring in 1 sensor solution. These 2-gas sensors detect both carbon monoxide and hydrogen sulphide for industrial safety, portable and fixed gas detection, and process or biogas applications where fast response and stability are critical.

These H‑Series dual‑gas sensors are recommended for next‑generation compact detectors where high performance and small footprint are required. The COH-H2 sensors have surface mount contacts and a low profile, matching Honeywell’s 1-series format.
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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Warranty

COH-H2

Carbon Monoxide (CO) + Hydrogen Sulphide (H2S)

A4 4‑electrode

0-50 ppm

1400 to 2200 nA/ppm

<60s

24 months

 

Feature

Benefit

H‑Series compact housing

Supports slim profile instruments and hard‑to‑fit designs.

Optimised for wearable gas detectors

Delivers strong output and fast response in a small, rugged package.

Dual‑channel CO/H2S measurement

Simplifies design of compact 4‑gas analyzers and personal monitors.

Designed for harsh industrial environments

Supports stable operation in wide temperature and humidity ranges

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.