Level radar sensors for water management

The radar measuring principle currently supersedes the ultrasonic measuring principle in level measurement. Ultrasound is dependent on temperature, wind and fog, but radar is not. If high accuracy (± 2 mm) and an analog output (4-20 mA) are also required, radar sensors are the measuring principle of first choice.

The radar measuring principle is particularly suitable when the level must be measured from the outside without touching the medium: With radar, the medium can also be measured through glass or non-conductive plastic. These materials produce little reflection. Depending on the installation, the radar sensor does not see these reflections, because they are reflected to the side, for example.

Limitations of the radar measuring principle are long distances: the limit is 120 m (VEGAPULS 64).

The wireless operation via Bluetooth via smartphones / tablets and / or PCs with PACTware and Bluetooth USB adapter is completely new, which further simplifies commissioning or diagnostics. Corresponding display and evaluation devices enable the measured value to be displayed and provide the necessary relay outputs, for example for pump control.

Schmidt Mess- und Regeltechnik would like to introduce two radar level sensors from VEGA Grieshaber KG to you today, which we have included in our delivery program:

• VEGAPULS WL 61 is the standard device for municipal water treatment and wastewater treatment.
• VEGAPULS WL S 61 is the ideal sensor for all simple water and wastewater applications. We can offer this sensor particularly inexpensively.

Radar level sensor for water management: VEGAPULS WL 61

VEGAPULS WL 61 was specially developed for the water / wastewater sector. Modern technology offers a higher level of measurement certainty than classic measurement methods and has proven itself in practice.

In terms of price, it is also a real alternative to conventional ultrasonic technology. Radar technology offers numerous advantages over ultrasound, since it is independent of temperature influences, wind movements, fog or rain. When measuring flow in open channels, a radar sensor is used e.g. B. much more accurate than an ultrasound device, which is particularly the case with the z. T. affects very small measuring ranges.

The firmly cast cable and the robust housing of VEGAPULS WL 61 enable a high degree of protection of IP 66/68 (2 bar). Thanks to the various mounting options, the sensor can be easily integrated into an existing infrastructure.

VEGAPULS WL 61 is mainly used where the user demands accuracy and reliable function and the previous solutions do not meet them 100%.

Level, level or flow - one sensor for all measuring tasks
An application somewhat apart from classic level measurements can be found in the level measurement of rivers. The small, light radar sensor VEGAPULS WL 61, mounted on a boom, detects the level of the water without contact. Compared to complex level pipes, the installation costs and the maintenance effort are very low. Compared to a contactless measurement with ultrasound, the measurement with radar is also unaffected by changing temperatures, solar radiation or strong wind gusts and measures the flow level with an accuracy of ± 2 mm and provides early information about impending floods.

The simple installation, quick setup and the low maintenance requirements of VEGAPULS WL 61 convince in the various applications - from level, level to flow measurement.

Proven in practice and consistently further developed: VEGAPULS WL S 61

The radar sensor VEGAPULS WL S 61 is the ideal sensor for all simple applications in the water and wastewater sector. Thanks to the diverse installation options, it offers a particularly cost-effective radar solution, since it can be easily integrated into existing infrastructures.

Like VEGAPULS WL 61, VEGAPULS WL S 61 was specially designed for use in water and wastewater management. Its very good focusing enables it to be used in pumping stations and rain overflow basins, for flow measurement in open channels and for level monitoring.

The robust housing of the sensor is wear and maintenance free and, due to its high protection class IP 68 (2 bar), it is also suitable for applications in which the sensor can be flooded. The devices comply with the latest LPR standard (Level Probing Radar) and are fully approved for outdoor use.