Method and device for a high-precision measurement of a characteristic of a deposit of scale and / or flaking inside a fluid container, or a characteristic of a portion of the wall inside a fluid container by means of the use of an ultrasonic transducer

摘要

Method for a high precision measurement of a characteristic of a deposit (22) of encrustations and / or flaking inside a fluid container (20), or of a characteristic of a portion of the wall (21) in the inside a fluid container (20), in which an ultrasonic transducer (11) is used, in which a reflection area (12) is arranged in a part of the wall (21) or attached to a part of the wall (21) of the fluid container (20) in a location substantially opposite to the ultrasonic transducer (11), wherein the method comprises the steps of: a) emitting an ultrasonic emission signal (61) by means of the transducer (11) ) ultrasonic and a fluid / wall interface (51) on the other hand, in an absolute distance measurement by evaluating the signal reflected in the time domain of the fluid / reservoir or fluid / wall interface (51) , in which the fluid / reservoir or fluid / wall interface (51) is the fluid interface (25) with the reservoir (22) in the reflection area (12) or the fluid interface (25) with the wall (21) in the reflection area (12), in which the power resolution in the time domain is 1 ns or less than 1 ns, in which the temperature of the fluid is measured, in which a temperature detector (17) is used, in which the distance between the transducer (11 ) ultrasonic on one side and a fluid / reservoir interface (51) or a fluid / wall interface (51) on the other hand are obtained from the arrival time of the reflected signal and the speed of the sound of the fluid, depending the speed of sound of the fluid temperature, and in which the ultrasonic transducer (11) is arranged in contact with the fluid (25) or in contact with the inside of the fluid container (20).