Refrigerants transport thermal energy from the refrigerated goods to the environment. According to DIN EN 378-1 paragraph 3.7.1, the refrigerant is defined as a “fluid that is used to transfer heat in a refrigeration system, and which absorbs heat at low temperature and low pressure and gives off heat at higher temperature and higher pressure, with usually changes in the state of the fluid take place.” Or according to DIN 8960 paragraph 3.1 as a “working medium that absorbs heat in a refrigeration machine process at low temperature and low pressure and releases heat at higher temperature and higher pressure.” The definitions according to DIN refer to compression chillers.
A gas warning system for refrigerant warns of a leak in the refrigerant circuit. Early detection can prevent interruptions in the cold chain and limit environmental damage.
The gas sensors ME 1250 for refrigerants work with two different measuring methods:
- Infrared: the infrared measuring cell is robust, durable, and selective, and the sensor can be produced for a wide range of refrigerants.
- Semiconductor: the measuring cell is less expensive, but has a limited service life of 3 years and does not measure selectively.
The ME 1250 gas sensors are available for refrigerants such as R134a, R404a, R407a/c and R1234ze. However, this list is long and the gas sensors can be calibrated for a wide range of refrigerants. Please contact us for advice.