Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1983-09-30
1985-03-26
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
Using differential pressure
73189, 7386118, G01F 136, G01P 517
Patent
active
045065535
ABSTRACT:
A gas flow rotor cyclically connects a microphone to a dynamic flow press and then a reference static flow pressure. The microphone converts the pressures to a resultant alternating differential signal providing a first input to a phase-locked amplifier. A second amplifier input is derived from an optical pickup mounted on the rotor. Only the AC component of the converted microphone signal, which has a fixed phase relationship to that of the rotor, is amplified. A readout connected in circuit with the amplifier indicates the dynamic flow pressure.
REFERENCES:
patent: 2315756 (1943-04-01), Warner
patent: 3386287 (1968-06-01), Hurvitz
Bruce Charles W.
Kunkel Kenneth E.
Webb Fred C.
Elbaum Saul
Gibson Robert P.
Lane Anthony T.
Ruehl Charles A.
The United States of America as represented by the Secretary of
LandOfFree
Apparatus for measuring small values of air flow does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for measuring small values of air flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring small values of air flow will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1288785