Liquid level monitor

Details Liquid level monitor Liquid level monitor

1979-06-27

1981-09-29

Goldberg, Gerald

Measuring and testing

Liquid level or depth gauge

Hydrostatic pressure type

222 64, G01F 2314

Patent

active

042915759

ABSTRACT:
Apparatus is provided for monitoring the level of a liquid in a reservoir, especially in the situation where the liquid is a high temperature, molten material. The device operates as a static-tube differential pressure sensor and includes an open-ended tube with one end adapted for direct immersion in the liquid and with the other end being in pneumatic communication with a conventional differential pressure transducer. The meniscus of the liquid entering the tube essentially acts as a diaphragm membrane and eliminates the need for an immersible diaphragm, as conventionally used with static-tubes. The device may actuate a controller for compensating any change in the liquid level from a reference.

REFERENCES:
patent: 2455200 (1948-11-01), Wallace
patent: 3200971 (1965-08-01), Trethewey
patent: 3373609 (1968-03-01), Sundby
patent: 3499580 (1970-03-01), Smith
patent: 3964535 (1976-06-01), Bedell et al.
patent: 4020690 (1977-05-01), Samuels et al.
patent: 4142571 (1979-03-01), Narasimhan

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