Method of and apparatus for detecting predicted failure in fluid

Details Method of and apparatus for detecting predicted failure in fluid Method of and apparatus for detecting predicted failure in fluid

1990-08-22

1992-06-02

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

G01L 900

Patent

active

051176750

ABSTRACT:
First and second thresholds are established which define a pressure difference relative to a maximum pressure level for a fluid under pressure, which maximum pressure level is detected by a pressure detecting device, and a third threshold is also established which is lower than the maximum pressure level and higher than the first and second thresholds. While a pressure detected by the pressure detecting device ranges between the first and second thresholds, an output signal is supplied to a drive member. When a pressure lower than the third threshold is detected by the pressure detecting device, an output signal indicative of a predicted failure is produced. The output signal indicative of a predicted failure is produced when a pressure lower than the third threshold is detected a plurality of times by the pressure detecting device.

REFERENCES:
patent: 4459843 (1984-07-01), Durham

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