Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1991-04-22
1992-12-08
Woodiel, Donald O.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
731182, G01F 166
Patent
active
051687623
ABSTRACT:
A fluid speed measurement device includes a pair of ultrasonic transducers (T1, T2) spaced in a measuring chamber. A transmitter and receiver system is controlled by a microprocessor (100) which generates pulses which periodically invert and these are switched by switches (140, 150) to allow alternate direction of transmission. Reception and detection of signals is effected by blocks (152-168). Time calculation is determined by counter (109) and results are used to calculate flow speed or volume using the microprocessor. A speed increase in the measurement region is effected using a venturi device.
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British Gas plc
Woodiel Donald O.
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