Ultrasonic flow meter and method including a test procedure to verify the operation of the electronic
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United States of America Patent
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Jul 16, 2013
Grant Date -
Mar 15, 2012
app pub date -
Sep 16, 2010
filing date -
Sep 9, 2010
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Abstract
The invention relates to an ultrasonic gas flow meter and corresponding method of verification, where the ultrasonic gas flow meter comprises at least one signal evaluation unit, memory, piping through which gas can flow, and ultrasonic transducers disposed on opposite sides of the piping; the ultrasonic gas flow meter is adapted to detect a flow velocity of the gas flowing through the piping. The method comprises a test procedure for verifying the operation of electronics associated with the ultrasonic gas flow meter wherein, when the test procedure is activated, test signals are triggered which replace the propagation times measured with predefined propagation times associated with an assumed gas flow velocity and the output of the evaluation unit is detected to see how the calculated gas flow velocity compares to the assumed gas flow velocity.
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