| abstract |
The invention relates to a method for a high precision measurement of a characteristic of a fouling and/or scaling deposit inside a fluid vessel or of a characteristic of a portion of the wall inside a fluid vessel, wherein an ultrasonic transducer is used, wherein a reflection area is provided in a portion of the wall or attached to a portion of the wall of the fluid vessel at a location substantially opposite of the ultrasonic transducer, wherein the method comprises the steps of emitting an ultrasonic emission signal by means of the ultrasonic transducer and measuring the distance between the ultrasonic transducer and a fluid/deposit interface in an absolute distance measurement by means of evaluating the time-domain reflective signal of the fluid/deposit interface, wherein the fluid/deposit interface is the interface of the fluid with the reflection area or the interface of the fluid with the deposit on the reflection area. The invention further relates to a device for a high precision measurement of a characteristic of the fouling and/or scaling deposit inside a fluid vessel. Further, the invention relates to the use of such a device, to a method for monitoring a characteristic of the fouling and/or scaling deposit. |