| 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
|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|
|Distance Sensor Head Specification|
|Sweep Range, MHz||500.0|
|Sweep time, ms||12.0|
|Interface protocol||IP 192.168.1.1|
|Sampling rate||4096 points per 12.285 ms|
|Data range||14 bits|
|Power supply voltage||External Power supply|
|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|
|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|
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.