Mass flow sensor

Details Mass flow sensor Mass flow sensor

1979-09-05

1981-11-03

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

With indirect temperature or density compensation

G01F 186

Patent

active

042978947

ABSTRACT:
A mass flow sensor comprising a Karman flow detector in a fluid passage including a vortex generator and a vortex detector for detecting periods of generated vortices, and an air density detector including a reference pressure chamber enclosing a standard gas and a comparison pressure chamber into which a fluid in the passage is introduced and detecting means whose output varies proportionally to pressures and temperatures of the fluid introduced in the comparison pressure chamber, thereby compensating a volume flow obtained from the flow detector to obtain a mass flow dependent upon a density of the fluid with high accuracy.

REFERENCES:
patent: 1577170 (1926-03-01), Brown
patent: 1646474 (1927-10-01), Brown
patent: 3096434 (1963-07-01), King
patent: 3318150 (1967-05-01), Rose
patent: 3729995 (1973-05-01), Kovacs et al.
patent: 3776033 (0000-01-01), Herzl
patent: 4026150 (1977-05-01), Schmidt
patent: 4048854 (1977-09-01), Herzl
patent: 4116060 (1978-09-01), Frederick

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