Measuring and testing – Specific gravity or density of liquid or solid
Patent
1985-04-08
1986-07-29
Levy, Stewart J.
Measuring and testing
Specific gravity or density of liquid or solid
G01N 900
Patent
active
046024980
ABSTRACT:
There is provided a pressurized flow densitometer for the determination of he PVT properties of fluids. The densitometer comprises a tube flown through by the fluid to be tested, an exciter and sensor means for causing said fluid-filled tube to vibrate and for sensing the frequency and amplitude of vibrations thus induced, a frequency meter for processing the output of the sensor means, a thermostat for maintaining the tube and the fluid at a selectable, constant temperature, a pump connected to, and arranged upstream of, the tube for moving the fluid through the tube at controllable rates of delivery. The densitometer further comprises a flow resistance connectable to, and arranged downstream of, the tube to pressurize the fluid in dependence on the rates of delivery, at least one fluid-containing bottle attachable to the suction line of the pump, and a bypass valve arranged between the tube and the flow resistance, whereby flushing of the tube is accomplishable by opening the bypass valve to the atmosphere.
REFERENCES:
patent: 2713788 (1955-07-01), Gott
patent: 3233461 (1966-02-01), Heckl et al.
patent: 3728893 (1973-04-01), Janssen
patent: 4170894 (1979-10-01), Zupanick
patent: 4262523 (1981-04-01), Stansfeld
patent: 4489592 (1984-12-01), Pacanowski et al.
Glikberg Santiago
Marcus Yizhak
Levy Stewart J.
Raevis Robert R.
Yissum Research Development Company of the Hebrew University of
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