Pressure sensor having multiple O-ring sealants provided in seri

Details Pressure sensor having multiple O-ring sealants provided in seri Pressure sensor having multiple O-ring sealants provided in seri

1993-05-12

1994-12-27

Chilcot, Jr., Richard E.

Measuring and testing

Fluid pressure gauge

With protective separator

73714, 73 405R, G01M 308, G01L 700

Patent

active

053754727

ABSTRACT:
A pressure sensor comprising a passage for introducing a pressurized medium; a member surrounding the passage; first and second sealants disposed between the member and the passage for preventing the pressurized medium from leaking to the outside through a clearance between the member and the passage; and a pressure sensing element communicating with the passage; the first sealant being made of a first material which is difficult to be deformed by the pressurized medium; the second sealant being made of a second material having a sealing effect against temperature change; the first and second sealants being arranged in series between the passage and the member surrounding the passage.

REFERENCES:
patent: 3633618 (1972-01-01), Blackmore et al.
patent: 3935567 (1976-01-01), Reynolds
patent: 4882939 (1989-11-01), Welker
patent: 4903765 (1990-02-01), Zunkel
patent: 5119680 (1992-06-01), Myhre

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