About Non-Contacting Radar

For simple and challenging level measurement applications, non-contacting radar is easy to install, robust and reliable.


Improve Safety and Reliability While Enhancing Efficiency

We have developed products using advanced radar technology since 1974, and our continuous improvement approach has resulted in radar transmitters designed to meet future needs today.

Non-contacting radar technology is the ideal choice for tanks with moving objects and extreme temperatures and pressures. It is also unaffected by media density. All of this significantly reduces maintenance needs.

With built-in diagnostics, no need for calibration and the ability to detect even the smallest of changes, our devices improve process optimization.

How it Works

Non-contacting radar is based on microwave technology which detects only surfaces that reflect energy. In a measurement situation, temperature variations, dust or pressure changes do not affect accuracy. 

The device measures the time it takes for microwaves to leave the transmitter, reflect on the media and return back. The level is directly proportional to the time of flight.

With non-contacting technology it is also possible to calculate volume and mass.

Level measurement using radar technology is based on the reflection of microwaves on surface media.

All media have a dielectric constant. The higher it is, the stronger the reflection of the microwaves will be. Vacuum gives no reflection at all and has a dielectric constant of 1. Oil is approximately 2 and water around 80.

Our non-contacting radar devices provide undisputed reliability no matter what the media or situation.

Free space radar devices measure from the top down, have no moving parts and do not need calibration. The result is that you get reliable and accurate level readings regardless of changing process conditions.

Due to the fact that the microwaves are sent out in free space, obstructions such as mixer blades are not an issue. The device simply learns where the blades are located and ignores them. Our non-contacting radar devices find the true surface regardless of internal obstacles.

Antenna selection is application dependent.

Cone antennas are used in most situations and generally bigger is better because larger antennas absorb more returning microwaves. For situations with narrow nozzles, a rod antenna is the preferred choice.

Corrosive media that attacks stainless steel requires a process seal version which is a cone antenna with a PTFE seal.

For applications with solid materials and long ranges the parabolic antenna which provides a very focused beam is a good choice. For solid materials the cone antenna could also be a good option.


The Impact of Frequency in Non-Contacting Radar Level Measurement

Does frequency matter? Read all about what is best for your specific application.

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