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Ultrasonic was yesterday – the future is radar!

Compact level sensors with 80 GHz radar technology provide reliable measurement results under all conditions.

Advantages of radar technology compared to ultrasonic sensors

Where ultrasonic level measurement reaches its limits

Compared to ultrasonic measuring instruments, radar sensors measure unaffected by temperature fluctuations, vacuum or high pressures and are insensitive to contamination. 80 GHz radar sensors also convince with very good signal focusing. This makes it easier to separate measurement and interference signals - the measurement is much easier and more accurate.

Process and ambient influences

Radar sensors are unaffected by temperature, pressure or vacuum and provide correct readings under all environmental conditions.
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Due to their physical measuring principle, ultrasonic sensors are exposed to considerable influences because the sound running time changes with temperature, e.g. due to solar radiation and gas composition. Even in heavy fog, wind or rain, the sound waves are additionally attenuated and the measuring range further restricted.

Dead zone and floodability

Radar sensors allow a safe measurement up to the sensor antenna, even in case of flooding.
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Due to the process, flooding of the sensors occurs in some applications. Ultrasonic sensors are therefore often protected by mechanical flooding sleeves. However, such components can easily become contaminated and impair the reliability of the measurement. Radar sensors have no dead zone, do not require protective sleeves and measure reliably even in case of flooding.

Contamination and condensation

Radar sensors are insensitive to contamination and do not need to be cleaned.
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In many applications, sensors struggle with buildup. Especially with ultrasonic sensors, this influences the reliability of the measurement signal and increases the dead zone. Thanks to optimized signal processing, radar sensors can suppress interference caused by buildup on the antenna system.

Reliability and accuracy

Radar sensors can also be used in confined spaces and installations.
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Due to the high focusing of the 80 GHz technology, the radar beam can be aligned almost precisely to the medium to be measured. This means that there are no interference signals even with installations such as pipes or pumps, in narrow shafts or with deposits on walls. Compared to ultrasonic sensors, no interference signal suppression is necessary.

Do radar sensors also measure even at changing temperatures?

Do radar sensors also measure reliably when flooded?

Do radar sensors measure reliably even with contamination?

Level sensors

With cable connection compartment

Protection IP66/IP67, Type 4X

With fixed cable connection

Protection IP66/IP68, Type 6P

  • Measuring range up to 8 m
  • Accuracy ± 5 mm
  • Process temperature -40  … +60  °C
  • 4 … 20 mA


฿ 20,025.00
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With axial cable outlet

฿ 19,620.00
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  • Measuring range up to 15 m
  • Measuring accuracy ± 2 mm
  • Process temperature -40 … +80 °C
  • 4 … 20 mA
  • Explosion protection


Without display

฿ 27,900.00
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With display

฿ 31,275.00
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With axial cable outlet, supplementary outputs: Modbus, SDI-12

฿ 27,225.00
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With lateral cable outlet, supplementary Outputs: Modbus, SDI-12

฿ 27,225.00
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  • Measuring range up to 30 m
  • Measuring accuracy ± 2 mm
  • Process temperature -40 … +80 °C
  • 4 … 20 mA, HART, Modbus, SDI-12
  • Explosion protection


With axial cable outlet

฿ 34,200.00
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New heart for radar sensors

Today, radar sensors can be found in all areas of everyday life, from simple motion detectors for door openers to complex distance sensors in vehicles. However, the requirements for industrial level measurement differ considerably. The radar microchip newly developed by VEGA has been specially optimized for the requirements of level measurement. Thanks to the small design, very compact sensors are now possible These are significantly less expensive and can replace the previous ultrasonic sensors in almost all applications.
  • Optimized for the reflection properties of different media
  • Smallest design for the construction of compact sensor technology
  • 80 GHz technology for a very good Signal focusing
  • High accuracy in wide temperature ranges
  • Low energy consumption optimized for level measurement
  • Integrated function monitoring reduces maintenance costs


The optional VEGAMET controllers complement VEGAPULS radar sensors and are ideal for the requirements of the water and wastewater industry. They allow a simple implementation of pump controls, flow measurements in open channels and overfill protection according to WHG.


Large graphic display, weatherproof field housing

for one sensor

for two sensors

  • for analogue sensors


Input: - 1x 4 … 20 mA output: - 1x 0/4 … 20 mA current output - 3x operating relay

฿ 19,850.00
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Input: - 2x 4 … 20 mA sensor input output: - 2x 0/4 … 20 mA current output - 3x operating relay

฿ 27,350.00
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  • for analogue and digital sensors
  • Data logger


Input: - 1x 4 … 20 mA/HART sensor input - 2x digital input output: - 1x 0/4 … 20 mA current output - 4x operating relay

฿ 27,800.00
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Input: - 2x 4 … 20 mA/HART sensor input - 4x digital input output: - 3x 0/4 … 20 mA current output - 6x operating relay

฿ 35,300.00
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Interconnected solutions


During the development of the new compact device series, the focus was also on simple assembly and operation. In this way all parameters can be set quickly. Via the VEGA Tools app also wirelessly via smartphone or tablet. With myVEGA you also get all the information you need about your products.

Wireless adjustment

With Bluetooth, VEGA is looking far into the future. But already today, radio technology is making processes more and more flexible. Wireless communication provides better accessibility: In clean rooms, in harsh industrial environments and in hazardous areas. It allows parameterisation, display and diagnostics from a distance of up to 25 metres, thus saving time and avoiding dangers. Simply via VEGA Tools app – on any available smartphone or tablet.



With myVEGA as your personal information platform you have access to numerous online functions relating to the VEGA products.

  • 2D/3D drawings of configured instruments
  • Access to product documentation and order data
  • Access codes for VEGA sensors

More information

Our service for you


Every application is different and has its own special challenges. You’d like to talk with an expert and work out together with him which sensor best fulfils your requirements? Just give us a call. We’re happy to give advice and help you select the right instrument.

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Brochure radar is the better ultrasonic

Compact level sensors with 80 GHz radar technology