Ultrasonic instrument for condition monitoring of very small diameter tubes, e.g. for biotechnology, medicine, comprises a micro-chamber with an ultrasonic sensor arranged in direct contact with the medium in the tube

摘要

Ultrasonic instrument for condition monitoring in small diameter tubes comprises an ultrasonic sensor system connected to a control and evaluation circuit. The sensor system comprises a micro-volume chamber (2) housing incorporating an ultrasonic sensor (1) that is arranged within a small volume tube. The sensor system is inert with respect to the medium in the tube and is at least partially in contact with it. The excitation period of the ultrasonic sensor is between 0.1 and 0.3 times the time of travel of the ultrasonic echo within the micro-chamber.