Conductive fluid probe powering means

Details Conductive fluid probe powering means Conductive fluid probe powering means

1981-02-17

1982-10-26

Griffin, Donald A.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

340620, G01F 2300, G08B 2100

Patent

active

043564062

ABSTRACT:
A conductive fluid probe, one particularly used in sensing a boiler water, is operated with pulsed energy from the charging and discharging of a capacitor. The charging is allowed to occur in a normal resistance-capacitor manner, while the discharge is rapidly accomplished. The energy of both halves of the charge and discharge cycle are substantially the same even though the magnitudes of peak voltages are substantially different thereby operating the probe with a minimum of electrolysis and a maximum cleaning action.

REFERENCES:
patent: 3644885 (1972-02-01), Radin
patent: 4027172 (1977-05-01), Hamelink
patent: 4107658 (1978-08-01), Hill et al.
patent: 4224606 (1980-09-01), Bartles

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