Liquid level detection

Details Liquid level detection Liquid level detection

G - Physics

01

F

340/145

G01F 23/00 (2006.01) E21B 47/04 (2006.01) G01F 23/14 (2006.01) G01F 23/16 (2006.01)

Patent

CA 2026378

A method for detecting the presence of a liquid level at a monitor point along the depth of a borehole utilizes a diaphragm pressure switch for sensing the pressure of a captive air column in a measurement tube extending from the pressure switch to a predetermined point below the monitor point. In use a rising liquid level in the borehole seals an open lower end of the measurement tube from the earth atmosphere and allows the rising liquid level to compress the captive air column. In a preferred embodiment a visual signal is activated by the pressure switch when the liquid level in the borehole reaches the monitor point.

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