Method and apparatus for measuring the density of a dirty fluid

Details Method and apparatus for measuring the density of a dirty fluid Method and apparatus for measuring the density of a dirty fluid

1975-08-04

1976-10-05

Gill, James J.

Measuring and testing

Specific gravity or density of liquid or solid

G01N 900

Patent

active

039837440

ABSTRACT:
Apparatus for measuring the density of a dirty fluid, said apparatus comprising a hollow body adapted to have said dirty fluid passing through its interior; a rigid support member within which the hollow body is mounted and to which it is connected to provide a space therebetween adapted to contain a clean fluid; drive means for exciting said hollow body to vibrate at a resonant frequency; detecting means for detecting a density signal representative of the frequency of such vibrations, the frequency of said density signal in operation being dependent upon the density of said dirty fluid; and pressure transmitting means for transmitting the pressure of dirty fluid passing through the interior of the hollow body to the clean fluid in said space, so that the exterior of the hollow body is always subjected to substantially the same pressure as the interior thereof.

REFERENCES:
patent: 3648512 (1972-03-01), Abbotts
patent: 3763692 (1973-10-01), Agar

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