This standard describes hygrometers for the determination of the water dew point of natural gas by detecting water vapor condensate on the cooling mirror of the hygrometer or by checking the stability of the condensate on the mirror.
GB/T 17283-1998 history
2014GB/T 17283-2014 Determination of the water dew point of natural gas.Cooled surface condensation hygrometers
1998GB/T 17283-1998 Determination of the water dew point of natural gas--Cooled surface condensation hygrometers