Is it necessary to filter the boiler water before measuring its conductivity?
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When measuring steam conductivity, it is necessary to eliminate the interference of hydrogen ions; sampling for measurement is carried out after passing it through an ion exchange column. So, is it required to filter the boiler water through an ion exchange column when measuring its conductivity?
I would like to ask the original poster: is it necessary to pass the water through an ion exchange column before taking samples for measuring steam conductivity? Since passing through the ion exchange column removes the ions from the water, isn’t the conductivity value obtained in this way inaccurate?
Cation exchange columns are used to eliminate the interference of ammonium ions. Without such columns, the error in the measured conductivity is even greater.
The original poster had better go and test pure water! Deceiving oneself: lol
This is a concept for measuring very low conductivities; it is called hydrogen conductivity. In this approach, the cations in water are replaced by hydrogen ions using cation exchange resins, in order to increase the sensitivity of conductivity measurement. Among the standard methods for analyzing boiler water in the power industry, there is a specific standard for measuring hydrogen ion conductivity.