Method and apparatus for determining boiler water conductivity

Details Method and apparatus for determining boiler water conductivity Method and apparatus for determining boiler water conductivity

G - Physics

01

N

324/26

G01N 27/04 (2006.01) G01N 27/06 (2006.01) G01N 27/10 (2006.01) G01R 27/22 (2006.01)

Patent

CA 1060545

METHOD AND APPARATUS FOR DETERMINING BOILER WATER CONDUCTIVITY Abstract of the Disclosure A method and apparatus for determining boiler water con- ductivity to minimize erratic readings due to the random presence of steam in the region of the conductivity sensor. The apparatus includes circuitry for providing a signal responsive to the peak conductivity detected by the sensor. This peak signal is stored in a storage circuit having a relatively slow decay rate so as to not be disturbed by subsequent lower and erratic conductivity probe signals, with the stored peak signals being updated by subsequent peak readings more indicative of the true conductivity of the water. An embodiment which steps to subsequent peak readings is also dis- closed. -1-

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