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Radar Non-Contact Level Sensors

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Radar Non-Contact Level Sensors

RadarMadison Company offers a series of low-cost radar sensors for continuous level measurement. This product series offers a logical extension to the ultrasonic sensor series, where application conditions are in need of non-contact liquid level measurement, and where ultrasonic level measurement is not acceptable.

As with all Madison products, this radar technology can be designed for your specific level measurement needs, providing unique considerations for materials to be measured, vessel configuration and system interface. These radar level sensors are ideal for reflective liquids that have a foaming surface or vapor conditions beyond ultrasonic wave capabilities.

Go to our Resource Center to view more Non-Contact Level Sensors reference information.


  • Non-contact measurement
  • Continuous level measurement
  • Pulse radar measurement range 10" to 100' (0.254m to 30m)
  • Networkable, multi-sensor with available software
  • Simple push-button calibration


  • Various liquids and solids



Power Options AC: 115 VAC, 60 Hz or 230 VAC, 50 Hz (± 20%) 1.7 VA 
DC: 12 to 30 VDC, 0.07 Amps max. @ 24 VDC 
R load = (Vs–6)/24 mA
Output 4-20 mA or 20-4 mA, 6.1 uA resolution; 750 ohms (isolated on 4-wire models only) 
Optional RS232 or RS485 communications port


Accuracy ±0.25% of max. target range (in air)
Frequency 5.8 GHz or 6.3 GHz
Loss of Echo Hold 30 seconds, 22 mA output
Transmitter Power 50 uW average
Calibration Programmable via communications port
Diagnostics (Echo Profile) Via programmable port
Antenna Dielectric rod


Operating Temperature Range -40°C to 60°C (-40°F to 140°F)
Installation Category Class 11
Approvals FCC Part 15 — low-power communication device 
CE – 5.8 GHz models


Conduit Entry 1/2" NPT standard
Housing Aluminum or stainless steel 316L (optional)
Ingress Protection NEMA 4X (IP65)
Decoupler Polypropylene
Mounting Options Swivel socket (cold-rolled steel); PVC flange with 3"-8 NPT thread

Optional Features

PTFE antenna or sanitary PTFE antenna 
1.5" or 2" NPT PTFE decoupler for high-temperature applications 
Sanitary designs 
Antenna extension: 6" or 8"