GfG Instrumentation -

The CI 21 fixed transmitter has a charge carrier injection sensor that is a progressive development to improve upon current ammonia refrigeration detection methods. With CI 21 technology, sensor life is no longer limited to ammonia exposure levels. It is unaffected by exposure to high gas concentrations. This reduces replacement costs associated with electrochemical sensors. Charge carrier injection technology also eliminates false alarms frequently associated with metal oxide sensing (MOS). It also carries the CSA certification for safety.