Method and apparatus for determining fill level volume of air of

Details Method and apparatus for determining fill level volume of air of Method and apparatus for determining fill level volume of air of

1996-10-17

1999-01-19

Williams, Hezron

Measuring and testing

Volumetric content measuring

G01F 1700

Patent

active

058615547

ABSTRACT:
The present invention provides apparatus and associated methods for testing containers to determine if the containers have the desired fill point volume. In a preferred embodiment, the test container will be provided with fluid to the desired fill line and the volume of air in the container will be measured preferably by a differential pressure sensor in conjunction with a microprocessor with the corresponding volume of air in a reference container. The system provides suitable apparatus and an associated method for the supply of a fluid, which may be water, to the fill line in the container and the use of the distance between the fill line and container base or the distance between the fill line and the container mouth, or the percentage headspace in ascertaining the desired volume. In a preferred approach, after the fluid has been introduced into the test container to the desired fill line, comparative volume determinations will be made between the test container and a reference container employing differential pressure measuring. In an alternate embodiment, fluid is introduced into the test container, but not the reference container. In one embodiment, the height of the container measured between the container mouth and the container base is measured with the microprocessor making adjustments in desired fill line level if the height departs from the desired height.

REFERENCES:
patent: 3060735 (1962-10-01), Baker
patent: 4872489 (1989-10-01), Erhart
patent: 4888718 (1989-12-01), Furuse
patent: 4899573 (1990-02-01), Dimmick et al.
patent: 5367797 (1994-11-01), Zaim
patent: 5568262 (1996-10-01), La Chapelle et al.

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