Proven Innovation

Process analysis using ultrasound is an innovative method for the concentration analysis of liquids. The advantage of the measurement with clamp-on transducers lies in its non-intrusiveness. Besides, the system is capable of an accurate and reliable (mass) flow measurement.

Measurement Principle

The velocity of sound, as well as the liquids density, boiling point or refractive index, are substance specific parameters. The determination of the sound velocity is therefore an excellent tool for a sophisticated process analysis.

The sonic velocity is measured by transducers mounted on the outside pipe wall (clamp-on):

Both transducers are alternatively emitting and receiving ultrasonic signals. The sonic velocity within the medium is then calculated based on the mean value of the signals transit-time, where the transit-time within the pipe wall is accounted for. A temperature probe, also mounted in clamp-on or inline configuration, transmits the mediums temperature. Based on the measured sonic velocity and temperature, the desired process parameters , such as concentration, density, solid contents, yield, and more, can be calculated by the transmitter.

Moreover, by measuring the transit-time difference, the flow velocity and (mass) flow rate can accurately be determined.