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What is Cation Conductivity

June 22, 2009

What exactly is Cation conductivity and how it is beneficial in boiler water?

Prasad Reddy
Researcher - INDIA

June 23, 2009

Hi, Prasad

"In high pressure steam systems, cation conductivity is a useful tool for monitoring return condensate for low levels of contamination by anions such as Cl-, SO4-, HCO3-, etc. In practice, a cooled sample of condensate or high purity water flows through a cation exchanger in the hydrogen form. The cation resin replaces contaminating cations such as Ca++, Mg++, Na+, NH4+, and amines in the sample with hydrogen ions. The hydrogen ions exchanged for the other cations in the sample increase the conductivity contributed by the contaminant salts of mineral acid anions listed above by 3 or 4 times. Thus the cation exchange column can be thought of as a "conductivity amplifier▀" for mineral and organic acid contaminants; increasing the sensitivity of the conductivity analyzer to low levels of contamination. "

-- per www.gewater.com/pdf/pfe059.pdf

Regards,

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Ted Mooney, P.E. RET
finishing.com
Brick, New Jersey
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