Applications of Radar Sensors in the Wastewater Sector

The compact unit has a low weight and can therefore be installed quickly.

The compact unit has a low weight and can therefore be installed quickly.

80 GHz Enables New Applications in the Wastewater Sector

Thanks to an integrated clamping device, installation is extremely simple. Additionally, the cross section of a channel is only slightly reduced.

Thanks to an integrated clamping device, installation is extremely simple. Additionally, the cross section of a channel is only slightly reduced.

In the wastewater sector, although flow measurement is reasonably commonplace, the measurement of ‘foreign’ water ingress remains an extremely involved process. It is virtually impossible to use typical magnetic-inductive sensors in sewers, as they are practically just partially filled pipes.

As a consequence of this, ultrasonic Doppler systems are frequently used here. These still need a minimum coverage, however, and can quickly become soiled in the wastewater.

Mathematical algorithms and level readings, in combination with a Venturi channel, are the basis of Venturi flow measurement. One of the advantages of Venturi channels is that they are self-cleaning, and create very little backwater.

They are reasonably straightforward to handle and are consequently perfect for partially filled systems.

Using this knowledge, the managing director of engineering company UMS had the idea of using a special clamping device to develop a Venturi channel for quick installation. The company is now having this patented.

An advantage of the UMS channel is that it can be very quickly integrated into existing sewer systems without the need for structural alterations or special tools. Since these small, compact designs are not able to utilize the normally used characteristic curves of standard channels, special characteristic curves are created for the different channel versions by UMS.

This makes it possible to achieve high accuracy even under unfavourable conditions.

The UMS channel is available for different diameters. The conception and development of the channel was only possible thanks to the very compact design of the VEGAPULS 64 sensor.

The UMS channel is available for different diameters. The conception and development of the channel was only possible thanks to the very compact design of the VEGAPULS 64 sensor.

It is possible to get the UMS channel in a variety of different diameters. It was only possible to conceptualize and develop the channel courtesy of the VEGAPULS 64 sensor’s extremely compact design.

Without the most recent developments in technology for the level measurement of radars, it would not have been possible to achieve the final design engineering of the UMS channel. In order to ascertain the filling levels, a small radar sensor which can measure right to the bottom of the channel was necessary.

There were not any instruments suited to this task until recently. VEGAPULS 64 however, courtesy of its compact design, fitted into the system perfectly. The sensor also has an extremely high rating in terms of water resistance, measuring IP 68.

The Venturi channel is simple to position and clamp into place for immediate use, courtesy of its light weight. Problems common to magnetic-inductive flow measurement, such as backwater or leakage through sealing pads, are not found in this system.

It is possible to install the measurement flumes extremely quickly. This facilitates the tremendously efficient measurement of foreign water ingress. Consequently, UMS decided to acquire numerous systems simultaneously, to systematically detect foreign water ingress.

80 GHz in the Wastewater Industry

The advantages of 80 GHz are particularly evident when the sensors are installed in confined spaces. Typical applications are narrow pump shafts with numerous internals or heavy buildup on the shaft walls. VEGAPULS 64 with its encapsulated plastic antenna is incredibly easy to install. Several flood-proof versions are available.

This information has been sourced, reviewed and adapted from materials provided by VEGA Grieshaber KG.

For more information on this source, please visit VEGA Grieshaber KG.

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