Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1981-02-26
1983-07-05
Stephan, Steven L.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
73620, 73624, 73627, 73641, 367 13, 367 65, H04B 1100, H04R 2900
Patent
active
043911242
ABSTRACT:
Methods and apparatus for calibrating terminated ultrasonic electroacoustic transducers are disclosed. The transducers are excited by a driving signal to emit an ultrasonic acoustic wave, which wave is received either by the same transducer after reflection or by a second transducer to produce an output signal. The driving signal and output signal are supplied to measuring circuitry deriving transd
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Drost Cornelis J.
Milanowski G. Jan
Cornell Research Foundation Inc.
Stephan Steven L.
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