Remote seal-type pressure signal generator

Details Remote seal-type pressure signal generator Remote seal-type pressure signal generator

1986-11-14

1988-02-02

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With protective separator

73301, 73708, 73717, G01L 708, G01L 900, G01L 1904

Patent

active

047222280

ABSTRACT:
A remote seal-type pressure signal generator has a pressure measuring end having a sealing diaphragm facing a pressure to be measured, a pressure detector body connected to the pressure measuring end through a first capillary tube, the detector body having a pressure-receiving space in which a pressure transmitting medium is liquid-sealed and pressure detecting means for detecting an internal pressure of the pressure-receiving space by way of a pressure difference thereof with respect to a pressure of a second pressure-receiving space to which a second pressure is applied, and a flexible protective pipe covering the capillary tube between said detector body and said pressure measuring end, a second capillary tube is housed in the protective tube, and extending from the second pressure-receiving space in the detector body while having substantially the same length as the first capillary tube, and having a distal end closed in the vicinity of the pressure measuring end, with the pressure transmitting medium being liquid-sealed in the second pressure-receiving space and the second capillary tube.

REFERENCES:
patent: 3939708 (1976-02-01), Greer et al.
patent: 3990310 (1976-11-01), Greer et al.
patent: 4163395 (1979-08-01), Medlar et al.

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