Ultrasonic wave interface measuring device

Abstract

Abstract PURPOSE:To improve level detecting accuracy, by moving an ultrasonic wave transducer in a measuring pipe provided in the vertical direction in a solvent extracting tank, transmitting and receiving the ultrasonic waves, and detecting the interface level based on the time difference between the arrival times of the received reflected waves and the like. CONSTITUTION:An ultrasonic wave transducer 21 is inserted in the measuring pipe 20 provided in the vertical direction in a solvent extracting tank 1 so that it can be moved up and down. With the transducer 21 being moved up and down in the measuring pipe 20, the signal of the reflected time TB of the reflected wave B, which is received by the transducer 21, is displayed on a display device 26 through a controller 27. Since the reflected time TB is largely changed before and after the time when the transducer 21 passes the interface 9 between a solvent layer 4 and a solvent layer 5, the interface level can be accurately detected by performing a differential processing of the reflected time signal. In this way the interface level can be detected accurately.

Inventors

• 👤 Iwao Miura
• 👤 巌 三浦

Bibliographic Details