WSR550 76-81GHz Radar Level Transmitter | FMCW Millimeter-Wave Sensor

• Product Details

The 80G Radar Level Transmitter operates on FMCW (Frequency-Modulated Continuous Wave) technology at 76–81 GHz. Its 5 GHz modulation bandwidth and 3° beam angle make it the preferred choice for applications where space is tight, media is turbulent, or false echoes are a challenge.

Unlike traditional microwave or ultrasonic level sensors, the 80G radar signal penetrates dust, vapour, and foam, maintaining reliable measurement even in challenging process conditions. The built-in adaptive algorithm automatically adjusts for vessel type and material dielectric constant, removing the guesswork from commissioning.

• Features

Near-Zero Blind Zone

Blind zone as low as 0.08 m. The self-developed CMOS millimeter-wave RF chip enables compact RF architecture and maximises usable tank depth — critical for small vessels and custody-transfer tanks.

Industry-Leading ±2 mm Accuracy

5 GHz FMCW bandwidth achieves ±2 mm for liquids and ±5 mm for solids — outperforming 26 GHz alternatives. Ideal for custody transfer, inventory management, and SIL-sensitive processes.

3° Narrow Beam — Easy Installation

A 3° antenna beam angle minimises interference from internal tank structures (agitators, heating coils, ladders). No need to aim at the material angle of repose on sloped solids — reducing installation time and cost.

Remote Diagnostics & OTA Upgrade

Built-in Bluetooth and RS-485 Modbus/HART interfaces allow remote parameter configuration, real-time echo analysis, and over-the-air firmware upgrades — reducing field service trips and total ownership cost.

• Specification

All specifications are measured under standard conditions. Contact our applications team for performance data in hazardous or extreme environments.

• Applications

Water & Wastewater Treatment    

Monitor water levels in clarifiers, sedimentation tanks, lift stations, and chemical dosing vessels with pinpoint accuracy. The IP67-rated sensor handles humid, chemically aggressive atmospheres without contact with the process media. Suitable for drinking water, industrial effluent, and desalination plants worldwide.    

Clarifiers · Sludge tanks · Dosing vessels · Stormwater sumps · Desalination feed tanks

Oil & Gas / Petrochemical    

Reliable hydrocarbon inventory and interface measurement in storage tanks, separators, and day tanks. The narrow 3° beam virtually eliminates false echoes from internal fittings, while the wide operating temperature range (-40 °C to +150 °C) handles everything from cryogenic LNG to hot crude.    

Crude oil tanks · Separator vessels · Fuel day tanks · Slop tanks · LPG bullets

Chemical & Pharmaceutical    

Precise level monitoring for corrosive acids, alkalis, solvents, and API active ingredients. Available with quartz-isolated flange antennas and stainless-steel housing to meet hygienic and chemical resistance requirements. Bluetooth configuration eliminates the need to open the housing in hazardous areas.    

Acid/alkali storage · Solvent tanks · Reactor vessels · IBC totes · Pharmaceutical mixing tanks

Bulk Solids / Powder & Granule    

The 80 GHz signal's short wavelength delivers excellent reflectivity on powders and granules regardless of angle of repose. The built-in adaptive algorithm distinguishes bulk material echoes from structural false echoes .    

Cement hoppers · Fly ash silos · Coal bunkers · Plastic pellets · Grain storage

Cement & Building Materials    

Designed for extreme dust environments, this sensor maintains reliable level readings in cement powder silos, clinker hoppers, and aggregate bins where ultrasonic sensors fail. Process temperatures up to 150 °C cover clinker cooling conveyors and kiln feed systems.

Cement silos · Fly ash hoppers · Clinker bins · Raw meal silos · Aggregate storage

Mining & Minerals Processing    

Rugged IP67 housing survives vibration, dust, and chemical splash in ore slurry tanks, tailings ponds, and ball mill feed bins. The wide measuring range (up to 120 m) covers large open-pit storage facilities. Modbus RS-485 integrates directly into mining SCADA and DCS systems.    

Ore slurry tanks · Tailings ponds · Mill feed bins · Acid leach tanks · Water recovery dams

Pulp & Paper    

Reliable level measurement of pulp stock, white liquor, black liquor, and wood chip storage silos. The non-contact design eliminates fouling and reduces maintenance versus float or pressure-based alternatives. Chemical-resistant antenna options handle aggressive digester liquors.    

Pulp stock chest · Black/white liquor tanks · Wood chip silos · Chemical recovery tanks

• FAQ

Q：What is the measuring range of the 80G radar level transmitter?    

The standard model measures from 0.08 m to 30 m. Extended range models cover 0.3 m to 60 m and up to 120 m, making them suitable for large storage tanks, reservoirs, and open-pit mining applications.

Q：What is the accuracy of this radar level sensor?    

For liquid level measurement, accuracy is ±2 mm. For solid and powder applications, accuracy is ±5 mm. This is achieved by the 5 GHz FMCW bandwidth, which provides a theoretical minimum range resolution of 30 mm.

Q：Can this radar level transmitter be used for both liquids and solids?    

Yes. The built-in adaptive algorithm covers liquid (including agitated and foamy surfaces) and bulk solid applications (including powders, granules, and coarse aggregates). You simply select the vessel type and material category during commissioning.

Q：Is the 80G radar transmitter suitable for high-temperature applications?    

A dedicated high-temperature variant (T1) operates from -40 °C to +150 °C. Combined with the quartz-isolated flange antenna option, it is suitable for steam injection vessels, asphalt tanks, hot process vessels, and cement kiln systems.

Q：What is the difference between 80 GHz and 26 GHz radar level sensors?    

80 GHz (76–81 GHz) sensors offer a narrower beam angle (3° vs 8–12°) and shorter wavelength, resulting in better reflectivity on fine powders, higher accuracy, and easier installation in cluttered tanks. They are generally preferred for solids and high-accuracy liquid measurement.

Q：Is OEM or ODM supply available?    

Yes. We supply OEM-branded units and offer ODM customisation for antenna type, housing colour, label, and communication protocol. Please contact our international sales team for volume pricing and NDA arrangements.