Apparatus for determining the density of liquids and gases from

Details Apparatus for determining the density of liquids and gases from Apparatus for determining the density of liquids and gases from

1992-05-01

1995-12-26

Williams, Hezron E.

Measuring and testing

Specific gravity or density of liquid or solid

G01N 900

Patent

active

054777267

ABSTRACT:
An apparatus for determining the density of liquids and gases from the length of a period of an oscillator filled with a test sample, an oscillation amplifier being provided for its excitation which excites the oscillator in its mechanical resonance frequency via one or a plurality of actuators and which emits a periodic electrical signal, the period of which corresponds with the period of the oscillator or a multiple thereof. To make highly accurate measurements possible it has been provided that the actuators are disposed between the installation site of the oscillator or the housing of the oscillator rigidly connected with the installation site, and a countermass. In an alternative embodiment, the oscillator housing is eliminated so that the actuator or actuators are interposed directly between the oscillator and the countermass. A thermostatically-controllable plate and thermostatically-controllable elements may be used as in the previous embodiment.

REFERENCES:
patent: 3339400 (1967-09-01), Banks
patent: 3385104 (1968-05-01), Banks
patent: 3910101 (1975-10-01), Kratky et al.
patent: 4524610 (1985-06-01), Fitzgerald et al.
patent: 4602498 (1986-07-01), Glikberg et al.
patent: 4838084 (1989-06-01), Leopold
patent: 4872335 (1989-10-01), Tsuruoka
patent: 4926682 (1990-05-01), Holm-Kennedy et al.
patent: 5005400 (1991-04-01), Lew
patent: 5237853 (1993-08-01), Cassaday et al.
patent: 5253533 (1993-10-01), Lam et al.
patent: 5339258 (1994-08-01), Stabinger
Langdon, R. M., "Vibratory Process Control Transducers", The Marconi Review, vol. XLIII (1980), No. 218, Rugby, Great Britain, pp. 156-175.

Affiliated with

Also associated with

Rating

Apparatus for determining the density of liquids and gases from does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for determining the density of liquids and gases from , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining the density of liquids and gases from will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1361912