Millimeter-wave radar
Level meter

The HKI 202 radar level meter is an in-house non-contact water and material level instrument for rivers, lakes, reservoirs, and treatment-plant support. It works in the 80/120 GHz ISM band with FMCW modulation for all-weather level readings, unaffected by climate, temperature, surface vapor, or contaminants in the water. Built-in processing keeps the measurement precise.

20mEffective range

±2mmAccuracy

3°Narrow beam

Non-contactFMCW radar

IP681m / 24h

Key Highlights

Non-contact level, all-weather, low maintenance

FMCW millimeter-wave, non-contact measurement with a 3° narrow beam for deep, narrow shafts. Immune to climate, humidity, vapor, and contaminants. Range up to 20 m, ±2 mm accuracy, no manhole entry, easy install, ultra-low power for long-term online use.

Compact body · 20 m range

Compact housing, Effective range up to 20 m, fits many mounting sites.

3° narrow beam · works in tight shafts

Beam angle only 3°, well suited to drainage manholes, wells, and other narrow spaces.

Non-contact · low maintenance

Non-contact radar measurement, Cuts interference from harsh water and keeps maintenance low.

All-weather · high immunity

Works in all weather, Unaffected by temperature or humidity with strong immunity.

Measure + sleep · energy saving

Combines measure and sleep modes, Lower energy use suited to long deployments.

Integrated · high stability

Integrated, compact design, Raises stability, reliability, and accuracy.

No manhole entry · easy install

Fast to install, little civil work, No confined-space entry, easy to remove.

IP68 protection

IP68 protection (1 m water depth, 24 hours), suited to field sites.

Multiple interfaces · easy to connect

Several interface options, Easy to connect to a platform Flexible networking.

Applications

Water and material level, measured without contact

From rivers, lakes, and reservoirs to drainage manholes, narrow wells, treatment support, and field hydrology — install and measure, with little maintenance.

River levelRivers

Lake levelLakes

Reservoir levelReservoirs

Drainage manholeManhole

Well monitoringWells

Treatment supportWater Treatment

Field hydrologyField Hydrology

Water / material levelLevel Sensing

HKI 202 · Radar level meter Online

Level m4.82

Ullage m5.18

Rate of change mm/h9

Echo strength %86

Operating modeMeasure

Beam angle3°×3°

FMCW · 120~123.5GHz · MODBUS 485

Live Reading

Millimeter-wave live level,
all weather, no distortion

The probe sits above the water and measures without contact. FMCW millimeter-wave echoes return from the surface; onboard algorithms compute level and trend. Measure/sleep cycling saves power, and RS-485 / Modbus feeds the platform.

Non-contactMillimeter-wave sensing · unaffected by vapor or contaminants
High accuracy±2 mm accuracy · 1 mm resolution
Narrow beam3° × 3° · reaches narrow shafts
CommsRS-485 · Modbus · multiple interfaces

Specifications

Instrument specifications

General specifications for the HKI 202 radar level meter. Use them in a bid table; contract documents govern the final configuration.

Measuring range0.02 ~ 20 m

Accuracy±2 mm

Resolution1 mm

Beam width3° × 3°

Transmit frequency120 ~ 123.5 GHz

Operating temperature-45 ~ 85 ℃

Communication portRS485

ProtocolMODBUS 485

Supply voltage9 ~ 24 V DC

Operating current20 mA

Housing materialABS engineering plastic

Ingress protectionIP68

Dimensionsφ66 × 93 mm

Get In Touch

Where do you need level?
Specify a radar level meter

Tell us the site, range, mounting height, and interface needs. We will return a selection and bracket list — parameters can be adjusted to the job.

Call for selection →

Hotline139 2696 7285

Websitewww.hkinst.com

AddressNo. 40, Jinfeng West Road, High-tech Zone, Zhuhai, Guangdong