Flow meter
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United States of America Patent
Stats
-
May 31, 1994
Issued Date -
N/A
app pub date -
Dec 5, 1991
filing date -
Jun 25, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flow meter for determining rates of fluid flow in a fluid conduit where the flow rates are low. The flow meter comprises a parallel combination of a controllable valve and a pressure differential sensing device coupled to the conduit. The flow meter operates by maintaining equal pressure on both sides thereof. When pressure unbalance occurs, the flow meter and associated control apparatus measures the amount of fluid necessary to equalize pressure. The frequency of fluid replenishment necessary to equalize the pressure determines flow rate.
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Cited Art Landscape
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