Enhanced pressure measurement flow control system
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United States of America Patent
Stats
-
Dec 11, 1990
Issued Date -
N/A
app pub date -
May 1, 1989
filing date -
Sep 3, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for measuring flow of fluid through a line. A portion of the fluid in the line is isolated in a rigid container so that the fluid in the container is not affected by pressure in the rest of the line. An apparatus is provided for measuring that portion of the container that is not occupied by the fluid. In order to urge fluid into and out of the container, a positive pressure source, for providing gas to the container, and a negative pressure source for removing gas from the container, are provided for.
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