System for the nonintrusive monitoring of electrical circuit bre

Details System for the nonintrusive monitoring of electrical circuit bre System for the nonintrusive monitoring of electrical circuit bre

1994-05-18

1996-07-23

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 375, 73 52, 340605, 340626, 324424, 324460, 218122, G01L 900

Patent

active

055378587

ABSTRACT:
A sensitive to a change in the physical dimension(s) of the exterior surface of a pressure vessel transducer and attached to the exterior surface thereof the pressure vessel may be a vacuum chamber. The transducer measures exterior dimension change, representing interior pressure change information, without intrusion. The measurements are displayed using distinctive lights or audible alarms which signal if the pressure inside the vessel is within a predetermined range. If the pressure within the vessel varies outside of the predetermined range, a more precise display device such as a meter, is provided to aid facility personnel in deciding when repairs are necessary.

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patent: 5311779 (1994-05-01), Teruo
patent: 5319978 (1994-06-01), Grudzien, Jr.

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