Liquid leak test probe with compensation for gas in line

Details Liquid leak test probe with compensation for gas in line Liquid leak test probe with compensation for gas in line

1990-03-09

1992-02-04

Dixon, Joseph L.

Boots, shoes, and leggings

36457101, 73 4R, 222 52, G01L 2700

Patent

active

050864033

ABSTRACT:
A leak test probe includes a pressure transducer which may be mounted in mechanical contact with liquid in the conduit. The pressure transducer provides a pressure signal to a microprocessor-based circuit which, following software stored in its memory determines if there is a leak in the conduit by measuring the time rate of change of the pressure. The software also analyses the pressure signal and compensates for the effect of gas in the conduit by determining the time rate of change in the pressure immediately after the pump turns off and adjusting a sliding time scale for the leak test depending on the result.

REFERENCES:
patent: 4658986 (1987-04-01), Freed et al.
patent: 4727748 (1988-01-01), Horigome et al.
patent: 4835717 (1989-05-01), Michel et al.
patent: 4974179 (1990-11-01), Patton et al.

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