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000-0CL2-B1Alphasense Chlorine gas sensors operate using proven fuel cell technology.

Sensors are available in the following sizes:

A: 20mm diameter, the industry standard size for portable gas detectors

B: 32mm diameter package, the best choice for fixed site application

D: miniature, with proven long-term performance, for the next generation of gas detectors

The Cl2 range provides OEMs with reliable sensors for use in a number of high volume applications. Strong signal levels combined with low zero current allows resolution to 20ppb and an operating range from +0 to 20ppm. The sensors are suitable for inclusion in fixed installation sensing heads and portable safety instruments.

These sensors have improved transient response to humidity changes compared to competitors’ equivalent sensors.

The Cl2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.

Application notes

Download Toxic Application Notes – see application notes for full details.

Sensor Specification Summary

Compare Alphasense Chlorine sensors – sensor specification summary.

Data sheets

Go to downloads page

File Name Description Type Download Link
CL2-D4 Miniature Data Sheet
CL2-B1 Compact Data Sheet
CL2-A1 Small Data Sheet


Staying at the forefront of sensor technology guarantees the best solutions for our customers



Each and every sensor is manufactured to the highest standards and tested for long-term reliability



Through investment and innovation we strive to exceed environmental and legislative targets


Download Data Sheets

Get data on our sensors Download Data Sheets

Download Application Notes

Get technical information Download Application Notes


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