Contactless radar technology obviously has the great advantage that the level can be measured without direct contact with the medium. In typical facilities, a radar sensor is installed on a mounting socket and thus has direct contact with the vessel interior. Since radar signals are able to pass through non-conductive materials such as plastic, glass or ceramic, a radar sensor can even be mounted completely outside of the vessel. Thus, it is possible to measure through windows or even directly through plastic containers. Particularly when using the older radar technology with a transmission frequency of 26 GHz, the window should be inclined at an angle of about 20° in order to deflect any resulting interference reflection from the window to the side. Also when measuring through the top of a plastic container, it was often necessary to place the sensor over an inclined surface of the container in order to reduce any resulting spurious signals.
Entirely non-contact measurement, with total separation from the vessel interior
No special requirements on the chemical resistance of the sensors
Ideal for the pharmaceutical and food industries