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GfG Instrumentation CS 21 Fixed Gas Transmitter for Freons

The CS 21 transmitter uses the proven chemosorption detection principle for detection of Freon Gases. The rapid response of the transmitter provides opportunity to take counter measures and thereby limit damages. The long life of the sensors makes the CS 21 a low-cost solution for your detection needs. A transmitter can be continuously operated for more than 5 years.


  • High sensitivity to broad range of refrigerants
  • Expected sensor life of greater than 5 years
  • Sensor responds quickly to any change in gas concentration

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