COH-D2 Dual Carbon Monoxide / Hydrogen Sulphide Sensor

CO & H2S 2-Gas Sensor, Electrochemical, D-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, miniature and fixed gas detection, and process or biogas applications where fast response and stability are critical.

These ultra-compact dual CO / H2S sensors are recommended for clip-on and wearable 4‑gas monitors where size and weight are constrained. The COH-D2 is the smallest dual CO / H2S sensor on the market.
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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Warranty

COH-D2

Carbon Monoxide (CO) + Hydrogen Sulfide (H2S)

D- Series             

CO: 0–1000 ppm;
H2S: 0–100 ppm

CO: 27 to 55 nA/ppm H2S: 90 to 175 nA/ppm

CO: <25 s(0–400ppm); H2S: <30 s(0–20ppm)

24 months

 

Feature

Benefit

Miniature dual‑channel CO/H2S design

Enables very small personal gas monitorswithout sacrificing performance

Independent CO and H2S channels

Provides accurate measurements for both gases in a single footprint

Proven dual‑gas implementation

Supports robust performance under challenging field conditions

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.