LR300 Series - High frequency

Radar technology is put into use for detection of level in continuous level measurement applications. A radar level detector basically includes:

A transmitter with an inbuilt solid-state oscillator.
A radar antenna.
A receiver along with a signal processor and an operator interface.

The operation of FR100 involves sending microwave beams emitted by a sensor to the surface of medium in a tank. The electromagnetic waves after hitting the fluids surface returns back to the sensor which is mounted at the top of the tank or vessel. The time taken by the signal to return back i.e. time of flight (TOF) is then determined to measure the level of medium in the tank


  • Good for level measuring in container, vessels
  • Measuring range up to 70m
  • Tiny blind spot
  • Low power consumption


Measuring range: 10m, 20m, 30m, 70m
Frequency: 26GHz
Current output: 4...20mA(2-wire)/DC24V; 4...20mA(4-wire)/DC24V/AC220V
Communications protocol: Modbus
Resolution: 0.03% of F.S., Max. 1mm
Nonlinearity: Max. 0.3% of F.S.
Repeatability: ±3mm
Process temperature: -40...150°C
Process pressure: -1...40bar
Protection class: IP65
Vibration proof: Mechnical vibration: 10m/s, 10...150Hz
EMC Standards: Emission Standards: EN 50081-1
Immunity Standard: EN 50082-2
CE certificate
ExProof certificate
Material: Antenna: PTFE/PP/Stainless steel 316L
Flange(thread): Stainless steel 316L
Housing: Aluminum
Sealing for housing and cap: Silicone rubber
Display: Polycarbonate
Grounding terminal: Stainless steel
Mounting: See manual
Process connection: Flange/thread/customirization
Electrical process: Connector: two M20x1.5 or NPT cable(diameter 5...9mm)
Voltage: Standard-15...36VDC/150...240VAC; Intrinsically safe-15...30VDC
Wiring protection: Reverse polarity, Overvoltage
Power consumption: Max. 22.5mA