Liquid level monitor

Details Liquid level monitor Liquid level monitor

1998-07-16

1999-05-11

Dougherty, Elizabeth L.

Measuring and testing

Liquid level or depth gauge

Hydrostatic pressure type

G01F23/00

Patent

active

059016035

ABSTRACT:
A liquid level monitor using a pressure actuated sensor to replace the open bubble tube. Air flows down the supply tube as in the bubbler, but rather than being released into the water, the air enters a chamber that has one movable wall, such as a diaphragm, that is acted on from the inside by pressurized air and from the outside by the hydrostatic head of the water. When the water pressure exceeds the chamber air pressure, the movable wall is pressed against an air outlet and does not allow air in the chamber to escape through the air outlet. One embodiment uses a diaphragm disposed over the air outlet; however, the concept may be extended to several other movable members, such as a piston with low actuation force. When the air chamber pressure exceeds the water pressure, the movable member moves away from the air outlet, releasing air and causing the chamber pressure to drop down to the water pressure.

REFERENCES:
patent: 3863504 (1975-02-01), Borsanyi
patent: 3897682 (1975-08-01), Brooks
patent: 4409833 (1983-10-01), Thomson et al.
patent: 5063778 (1991-11-01), Jorritsma
patent: 5072617 (1991-12-01), Weiss
patent: 5107898 (1992-04-01), Keeney
patent: 5519638 (1996-05-01), Tiao
patent: 5661228 (1997-08-01), Young

Affiliated with

Also associated with

Rating

Liquid level monitor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid level monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid level monitor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-239449