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Interface and Multiphase Level Measurement

Radiometric measurements from Berthold. The radiometric measurement systems from Berthold are used to localize the interface layer between two phases. These systems are even used in more complex processes to measure the density profile and thereby picturing the heights of the different product layers inside the vessel. In this way the characteristic of the emulsion layer can be monitored as well.

The measurements are primarily applied in chemical plants and in the oil & gas industry e.g. on separator vessels. Whenever other measurement technologies fail to do their job due to temperature, pressure or geometrical issues, radiometric measurements can be counted on. Even caustic or acid fluids can be measured reliably with the Berthold systems. The measurement in extreme environments is the major benefit of the radiometric systems.

Measuring Principle
Gamma radiation is attenuated when transmitting a vessel. The attenuation by the heavy phase is much stronger due to its higher density. The light phase hardly attenuates and the gamma radiation arrives virtually without weakening at the detector side. Based on the measured intensity of the gamma radiation the height of the heavy phase and finally the location of the interface can be determined very precisely. The measurement is not affected by pressure, temperature, viscosity, colour and chemical properties of the measured material. Consequently this results in the high reliability and low maintenance of the radiometric measurement systems, even under harsh operating and environmental conditions.

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