Radar level/distance/speed measurement at 76 (94) GHz

    • Narrow beam
    • Penetration through dust and fog/smog
    • Distance operation up 500 m
    • High resolution
  • Nickel, Gold, Coil and other mines
  • Cement and other dusty manufactories
  • Ground control in airports and other facilities
  • Avoid collision systems, for example for Railways
 FMCW 76(94)/10/x Millimeter Wave Distance non-contact Sensor (option X: 100 – 600 mm Cassegrain antenna) is a high-accuracy non-contact level measurement radar of large volumes of bulk materials in hoppers and silos at minerals and chemical industries. It operates on 76 or 94 GHz, the choice is up to customer. The examples of use are hard-rock mines, cement hoppers, and other bunkers with adverse environmental conditions such as dust, corrosive gas, fog, high level noise. The Distance Sensor can also be used for liquid level measurement at industrial tanks where there is a fuzzy edge of liquid because of foam or vapor. The example of that application is volume measurement in tanks at large breweries.

The Distance Sensor is based on millimeter wave FMCW (frequency-modulated continuous wave) radar principles. It is free from laser, acoustic, and microwave radar shortcomings. It is characterized by a narrow beam that is good for enclosed areas like ore passes, because of 76 GHz (94 GHz) FMCW radar operational frequency that is equivalent to 3-4 mm wave length, the sensor provides an excellent penetration of dust and water vapour. The Distance Sensor works well even with a dust sticking on antenna. With a narrow beam, the Distance Sensor can build a precise surface profile at a hopper (mechanical scanning required). The operation range of Distance Sensor is 500 m, that allowing using it at deep mines, where typical passes are up to 300m but rarely even longer.

To facilitate installation, mounting and alignment at field condition, the sensor is built as two modules; a front end and a separate signal processor connected by a shielded cable. A local graphics display and keypad are incorporated into the control unit. The front end and antenna are housed in robust metal case. The signal processor and power supplies are built into a commercially available housing with signal access via cable glands.

To use Distance Sensor within complete data acquisition system on an enterprise, the sensor has
RS-485 interface using MODBUS protocol RJ-45 socket made in dust and moisture-proof embodiment. The radar transmitter at the Distance Sensor complies with international safety regulations. Please, see realized installations.

Distance Sensor Performance
Distance resolution 0.005 m
Distance range operation 0.6 to 500 m
Main reflector diameter size 200, 300, 450 and 600 mm
Distance Sensor radar transmitter emission power 10 mW
Distance Sensor radar operating frequency 76 GHz or 94 GHz
Power supply voltage +18 … +36 V DC opt. 110/220 V AC
Distance Sensor radar power consumption 20 W
Operation mode CW
Distance Sensor Head Specification
Sweep Range, MHz 500.0
Sweep time, ms 12.0
Interface protocol IP
Sampling rate 4096 points per 12.285 ms
Data range 14 bits
Power supply voltage External Power supply
Enclosure IP65
Communication connector RJ-45
Ambient temperature -30 to +50 °С
Atmospheric pressure 84.0-106.7 kPa (630-800 Torr)
Relative humidity at 35°С and lower, no more than 95%
Controller NZ6100 Specifications
Display 20 digits, 4.75 mm height
4 lines Liquid Crystal Display
Indicators Power LED
Control Unit Power Supply 85-265 V AC, 47-63 Hz, 15 W optionally +18 – +36 V DC
Membrane Keypad 27 keys including 8/18 function keys
Communications: RS-485  or TBD
Communication protocols MODBUS RTU
 Outline Drawing


How to order

Specify Model Number FMCW-76/10/xxx or FMCW-94/10/xxx, where

XXX – antenna size mm (avaliable 200-600 mm, see Cassegrain antenna ECA-W-10-xxx)


FMCW-76/10/300, Industrial Distance sensor with the following specification: operation frequency 76.0 GHz, output power 10 mW, antenna 300 mm.