ULTRASONIC INSPECTION INSTRUMENT

摘要

PURPOSE:To provide an ultrasonic inspection instrument which is adapted to inspect the presence of a matter in a specimen automatically with higher reliability in a non-destructive manner. CONSTITUTION:A probe 11 for transmission and a probe 12 for reception are arranged facing each other on both sides of an inspection hole 6 of a belt 5 running on a conveyor 2. A specimen S is held with a holder 7 having the belt 5 and moved between the probes 11 and 12 for transmission and reception. An ultrasonic beam is radiated to the moving specimen S from the probe 11 for transmission. An ultrasonic beam transmitted through the specimen S is received with the probe 12 for reception. A judging device of the apparatus body 13 examines whether the amplitude of the received signal is below a fixed value or not to determine the acceptance or rejection of the speciment S.