DL/T 1602-2016 "On-line Measuring method of hydrogen conductivity in pure water degassing in power plants" standard specifies a method for measuring the conductivity of degassed hydrogen in the continuous flow state of pure water in power plants. The standard is suitable for on-line degassed hydrogen conductivity measurement of pure water such as saline water, condensate water, feed water and steam in power plants. In the measurement process, the water sample is treated by a cation exchange column, and then the dissolved carbon dioxide in the water is removed by a degassing device to measure the conductivity of the water sample after degassing as the degassed hydrogen conductivity. This method effectively solves the problem of high measurement caused by dissolved carbon dioxide, and ensures the accuracy and Reliability of the measurement results.