Level Measurement the Easy Way – How Radar Measures Plastic, Concrete and Other Bulks

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Normally, a separate moisture meter is used for this, but such devices can only measure at certain points. In contrast, the sensor monitors the dielectric constant over the whole measuring range and is able to indicate average moisture content and detect even extremely small traces of moisture. This means an additional moisture meter may not be required.

Automatic Length Determination

Another unique feature is the automatic length determination. Accurate knowledge of the probe length is essential for all TDR sensors. This is also true for Vegaflex 82. In practice, almost all probes are ordered longer, because the exact length can only be determined at the installation site. Once the instrument is installed, the technician often shortens the probe to the right length directly on the spot.

The probe length then has to be measured again. Many users find this very inconvenient. The new Vegaflex 82 determines the length of the probe automatically and thereby accelerates the setup procedure immensely.

Detecting Echo Movement

The intelligent algorithms also play a part in the higher reliability of the signal processing. To put it more graphically, previously, during signal detection and analysis, the largest echo usually won out but such echoes might be caused by struts in the container or product buildup. The Vegaflex 82 works differently; it creates an echo profile from the moment it starts operating. It then uses this history to analyze and make the correct echo decision.

It rates moving echoes higher than static signals that always occur in the same place. For the sensor, a moving signal that fits the echo history is much more likely to be the level echo than other signals. Intelligent motion detection thus effectively increases measurement reliability, resulting in continuous and maintenance-free operation.

High precision is also required for troubleshooting. The more accurate the information available to the technician or maintenance personnel, the faster the instrument can be up and running and the plant operating at optimum level again.

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