Fluid level sensing systems

Details Fluid level sensing systems Fluid level sensing systems

1994-05-27

1996-09-10

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

340620, G01F 2300

Patent

active

055534945

ABSTRACT:
A boiler water level system comprises a plurality of electrodes arranged to sense the resistivity of the fluid at each of a plurality of different levels in a pressure vessel. The pressure vessel is coupled to one end of the boiler such that the level of the water in the pressure vessel is substantially the same as the level in the boiler, and each electrode senses the resistivity of the fluid (ie water or steam) between the tip of the electrode and the wall of the pressure vessel. Such a system on its own inherently produces a digital output of relatively low resolution, so to improve resolution, and to provide an analogue output if desired, additional circuitry is provided to sense the progressive change in the impedance sensed by each electrode as the water rises to progressively immerse that electrode and then carries on rising towards the next electrode.

REFERENCES:
patent: 3370466 (1968-02-01), Chang
patent: 3443438 (1969-05-01), Martin et al.
patent: 4020488 (1977-04-01), Martin et al.
patent: 4371790 (1983-02-01), Manning et al.
patent: 4382382 (1983-05-01), Wang
patent: 4720997 (1988-01-01), Doak et al.
patent: 4903530 (1990-02-01), Hull
patent: 5035139 (1991-07-01), Hoefelmayr et al.
patent: 5263370 (1993-11-01), Murata et al.
Walton, Rev. Sci. Instrum. 51(4), Apr. 1980, New York, US.
"Sensor for the Measurement of the Level and Volume of Conductive Liquids", pp. 504-508.

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