Liquid density monitoring apparatus

Details Liquid density monitoring apparatus Liquid density monitoring apparatus

1992-03-17

1995-09-05

Williams, Hezron E.

Measuring and testing

Specific gravity or density of liquid or solid

With weighing feature

73433, G01N 910

Patent

active

054470633

ABSTRACT:
A liquid bulk density monitoring apparatus which is particularly suitable for monitoring suspended sediment levels has a plummet suspended from one end of a balance beam and submerged in a vessel containing a liquid to be monitored. A sensor detects tilting of the beam from a reference or balance position as a result of variation in the sample bulk density, and produces an output to an output device for recording density variations. The apparatus is designed to compensate automatically for any changes in temperature, for example by making the plummet of a material having a coefficient of thermal expansion substantially the same as that of the liquid being monitored.

REFERENCES:
patent: 1210180 (1916-12-01), Logan
patent: 1272605 (1918-07-01), Becker
patent: 1800532 (1931-04-01), Howard
patent: 1892839 (1933-01-01), Howard
patent: 3089502 (1963-05-01), Davidson et al.
patent: 3186423 (1965-06-01), Davidson et al.
patent: 3308991 (1967-03-01), glassey
patent: 3323368 (1967-06-01), Glassey
patent: 3377869 (1968-04-01), Glassey
patent: 3407666 (1968-10-01), Glassey
"A Re-examination of the Plummet method for Determining Sediment Concentration", Joseph J. Szalona, Instrument news, Dc. 1989, pp. 4-5.

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