Port forward sensor for liquid level gauge or flowmeter

Details Port forward sensor for liquid level gauge or flowmeter Port forward sensor for liquid level gauge or flowmeter

1995-07-27

1997-07-01

Dombroske, George M.

Measuring and testing

Fluid pressure gauge

Mounting and connection

73301, 73299, 73291, 73292, G01F 2318

Patent

active

056440880

ABSTRACT:
An improved flowmeter sensor for measuring the level of liquid flowing in a conduit, pipe or open channel, characterized by an initially air-filled pressure transmitting passage which affords communication between a pressure port contained in the bottom of the sensor body, and a pressure transducer contained in the sensor body. The passage includes a vertical portion communicating at its lower end with the pressure port, and a horizontal portion connected with the transducer, whereby hydraulic pressure forces liquid into the passage to compress the air therein and thereby exert on the pressure transducer a pressure corresponding to the level of liquid in the conduit. The cross-sectional area and high surface energy of the material used to form the passage prevent liquid in the passage from migrating to the pressure transducer.

REFERENCES:
patent: 4549434 (1985-10-01), Marsh
patent: 5105662 (1992-04-01), Marsh et al.

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