Elastic surface wave pressure gauge and pressure sensor for such

Details Elastic surface wave pressure gauge and pressure sensor for such Elastic surface wave pressure gauge and pressure sensor for such

1980-09-25

1983-05-10

Ciarlante, Anthony V.

Measuring and testing

Fluid pressure gauge

Vibration type

310313B, 310313A, 310353, 73DIG4, G01L 1100, H01L 4110, G01L 906

Patent

active

043823866

ABSTRACT:
The invention relates to elastic surface wave pressure gauges.
The gauge comprises a plate on which are located the electronic components of the gauge and a pressure sensor grouping the electromechanical elements on a header having connecting pins. The header is provided with a pressure inlet which traverses the plate.
The invention is also applicable to the measurement of the pressures of fluids in order to optimize the supply to internal combustion engines. The pressure inlet is made of a rigid metal header and separately grounded for shielding of the surface acoustic wave electrodes to prevent "pull-in" where the oscillators inadvertantly lock on the same frequency.

REFERENCES:
patent: 3656232 (1972-04-01), Hinchey
patent: 3695502 (1972-10-01), Gaiser
patent: 3723920 (1973-03-01), Sheahaw et al.
patent: 3817107 (1974-06-01), Shimada et al.
patent: 3885173 (1975-05-01), Lee
patent: 3974463 (1976-08-01), Onodera et al.
patent: 4047129 (1977-09-01), Ishiyama
patent: 4085620 (1978-04-01), Tanaka
patent: 4100811 (1978-07-01), Cullen et al.
patent: 4106343 (1978-08-01), Cook
patent: 4193045 (1980-03-01), Houkawa et al.
patent: 4216401 (1980-08-01), Wagner
patent: 4245201 (1981-01-01), Takahashi et al.
patent: 4314215 (1982-02-01), Tanji et al.
patent: 4317372 (1982-03-01), Hartemann
patent: 4326423 (1982-04-01), Hartemann
patent: 4331022 (1982-05-01), Coussot et al.

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