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

1975-09-15

1977-09-06

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324118, G01N 2742

Patent

active

040470997

ABSTRACT:
A method and apparatus for determining boiler water conductivity 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 disclosed.

REFERENCES:
patent: 3368144 (1968-02-01), Gerdes
patent: 3430130 (1969-02-01), Schneider
patent: 3710778 (1973-01-01), Cornelius
patent: 3855522 (1974-12-01), Kobayashi

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