ULTRASOUND ECHO THICKNESS GAGE Russian patent published in 1995 - IPC

FIELD: nondestructive flaw detection of materials. SUBSTANCE: device has synchronization unit, echo pulse oscillator, piezoelectric transducer which is connected to input of amplifier which output is connected to one input of signal detector. Another input of signal detector is connected to synchronization unit, output of signal detector is connected to unit for normalization of amplitudes of said signals. The latter unit controls operations of time intervals meter which output serves as first output of the described device. In addition device has additional signal detector and meter of signal amplitudes, while one input of additional detector is connected either to amplifier output or to output of main signal detector, another input of additional signal detector is connected to input of amplitude meter which output serves as second output of device. EFFECT: increased range of measuring. 1 dwg