Measuring and testing – Volume or rate of flow – System
Patent
1978-07-20
1980-02-12
Myracle, Jerry W.
Measuring and testing
Volume or rate of flow
System
73194M, 73434, G01F 186
Patent
active
041877217
ABSTRACT:
Apparatus and method for mass flow measurement utilizing a substantially "U" shaped conduit mounted in a cantilever manner at the legs thereof, means for oscillating the conduit, and means for measuring the Coriolis force by measurement of the force moment or the angular motion of the conduit around an axis substantially symmetrical to the legs of the conduit. The force moment is measured by sensing incipient movement around the axis, and generating and measuring a nulling force. In preferred embodiments, the oscillating means are mounted on a spring arm having a natural frequency substantially equal to that of the "U" shaped conduit, and in a particularly preferred displacement the measuring means are sensors mounted on the "U" shaped conduit and adapted to measure, with proper direction sense, the time differential between the leading and trailing portions of the "U" shaped conduit passing through the plane of the "U" shaped conduit at substantially midpoint of the oscillation thereof.
REFERENCES:
patent: 2753173 (1956-07-01), Barnaby et al.
patent: 2865201 (1958-12-01), Roth
patent: 3303705 (1967-02-01), Dostal
patent: 3485098 (1969-12-01), Sipin
patent: 3955401 (1976-05-01), Catherall
patent: 4127028 (1978-11-01), Cox et al.
Myracle Jerry W.
O'Rourke Thomas W.
S & F Associates
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