DETECTION OF CRACKS ON METAL BELLOWS OF VALVES
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Jul 3, 2012
filing date -
Jul 8, 2011
priority date (Note) -
Abandoned
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Abstract
The present disclosure relates to a method for detecting a damage or contamination of a valve bellows, comprising the steps of: causing the valve bellows to oscillate, sensing the oscillations with a sensor and outputting a sensor signal generated by the oscillations, and comparing at least one sensor signal value with at least one reference value. The disclosure further relates to an apparatus comprising a valve with a valve bellows, a sensor for sensing oscillations of the valve bellows and for outputting a sensor signal generated by the oscillations, and a comparator circuit, such as a microprocessor, for comparing at least one sensor signal value with at least one reference value.
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