Vibration densitometer

Details Vibration densitometer Vibration densitometer

1975-06-27

1976-07-06

Gill, James J.

Measuring and testing

Specific gravity or density of liquid or solid

G01N 900

Patent

active

039674908

ABSTRACT:
A vibration densitometer having a strain gage pick-up to serve at least four functions one at a time or to serve two, three or four functions in any combination of two, three or four. The strain gage is bonded to or may embody a vibrating vane or body to be immersed in a fluid. The strain gage may be bonded to a vane with glass or an epoxy or other uniting agent. If glass is used, the densitometer may undergo unusually high temperatures and still perform reliably and accurately. The strain gage may be used (1) as a pick-up in an electromechanical oscillator embodied in the densitometer, (2) as a portion of a fluid temperature indicator, (3) for instrument frequency error correction (computable in two ways) as function of temperature, and (4) for producing an indication of what the fluid density would be at a selected constant temperature.

REFERENCES:
patent: 3444723 (1969-05-01), Wakefield
patent: 3677067 (1972-07-01), Miller et al.
patent: 3690147 (1972-09-01), Kuenzler

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