G - Physics – 01 – N
Patent
G - Physics
01
N
349/29, 349/39
G01N 29/00 (2006.01) G01P 5/24 (2006.01)
Patent
CA 1165855
ABSTRACT OF THE DISCLOSURE The specification describes an ultrasonic measuring device comprising two ultrasonic converter circuits which are selectively operative as transmitter and receiver and the terminals of which are selectively operatively connectable by a switch-over device to a transmission signal generator or a receiver amplifier, characterised in that, for forming practically equal terminating impedences of the quadrupole formed by both ultrasonic converter circuits, the transmission signal generator is in the form of a current generator.
381361
Danfoss A/s
Macrae & Co.
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