Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1997-11-19
1999-12-21
Fuller, Benjamin R.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73708, 73715, G01L 1904, G01L 708
Patent
active
060033797
ABSTRACT:
A pressure sensor device prevents foreign matters from reaching a pressure sensor at the back of a pressure introducing passage, is superior in resistance against both fouling and freezing, and includes a temperature sensor. The pressure sensor device comprises a pressure sensor including a pressure detecting element is disposed to define an enclosed reference chamber and an enclosed pressure introducing chamber and is deformed depending on a pressure difference between the reference chamber and the pressure introducing chamber for detecting the pressure of an object to be measured, a pipe connected to the pressure introducing chamber, and a lead-out portion; a temperature sensor including a heat sensitive element for detecting the temperature of the measured object and a lead-out portion; and a sensor container containing the pressure sensor and the temperature sensor therein and including a pressure introducing passage formed therein which has one end air-tightly connected to the pipe and the other end being open to the exterior, and also has a labyrinth structure, the sensor container including a temperature sensor containing projection formed to accommodate the heat sensitive element embedded in its distal end portion.
REFERENCES:
patent: 4797007 (1989-01-01), Elmore, III
patent: 4914954 (1990-04-01), Zlamal
patent: 5386730 (1995-02-01), Ikeda et al.
patent: 5661244 (1997-08-01), Nishimura et al.
"Multi-point Injection by Volkswagen", p. 102 (1996).
Ichikawa Jun-ichi
Nishimura Etsuo
Aw-Musse Abdullahi
Fuller Benjamin R.
Mitsubishi Denki & Kabushiki Kaisha
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