The method with chilled mirror is used for the determination of the dew point of water vapour of gaseous fuels and other technical gases with a dew point of water vapour between - 35?and a temperature of 5 ?under the temperature of the gases.
DIN 51871:1985 history
1985DIN 51871:1985-12 Testing of gaseous fuels and other technical gases; determination of dew point of water vapour; method of means of cooled mirror
1985DIN 51871:1985 Testing of gaseous fuels and other technical gases; determination of dew point of water vapour; method of means of cooled mirror