Method and apparatus for detecting bubbles in pressurized liquid

Details Method and apparatus for detecting bubbles in pressurized liquid Method and apparatus for detecting bubbles in pressurized liquid

1991-02-22

1993-02-02

Williams, Hezron E.

Measuring and testing

Gas content of a liquid or a solid

By pressure of the gas

73 6178, G01N 700

Patent

active

051829380

ABSTRACT:
A pressure transducer (58) generates an instantaneous pressure of a pressurized liquid, such as an adhesive, sealant, or caulk, being dispensed from a dispenser (52). The signal is received by a filter for filtering out non-bubble pressure disturbances. The filter includes comparators (106, 108); detection circuitry (112, 120) and timers (116, 124) or counters. An alarm indicating the passing of a bubble is indicated in response to signals which pass both the filters.

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Sense-A-Bead; Robotics, Inc.

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