G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 3/26 (2006.01) F17C 13/02 (2006.01) F17D 5/06 (2006.01) G01M 3/28 (2006.01)
Patent
CA 2129915
A device (10) for detecting irregular operation in a pressurized fluid vessel, such as leaks in a pipeline (20), includes a transducer (21) for measuring pipeline (20) instantaneous pressure, a microcomputer (23) and a wake-up timer (29). Microcom-puter (23) performs several different tests upon the collected pressure data to reliably ascertain if a leak or break in pipeline (20) has occurred. The first test involves a comparison of rates of change of pressure at successive preselected timed intervals, referred to as timed interval comparisons. If any test is failed, an alarm (30) and/or actuator (31) for valve or system sllut-down are operated. Once the timed intervals and testing are concluded, microprocessor (23) reverts to a powerdown mode to con- serve power. Wake-up timer (29) resets microcomputer (23) at preselected intervals for additional pressure data collection and testing.
Gowling Lafleur Henderson Llp
Shafer Valve Company (the)
LandOfFree
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