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Shenzhen Jiwei Automations Ltd.

Address：5th Floor, Baoli Building, No. 3162 Longgang Avenue, Shenzhen, P. R. China.
Tel：+86 755 28407683

FMCW Radar Level Meter

Rada-31 FMCW Radar Level Meter

●　With high frequency dual core processor, processing returned signal faster and more reliable.

●　100mm measurement range, particularly suitable for applications that are under high level of dust and require larger measurement range.

●　With adjustable guide, effectively improves measurement reliable for sloping solids.

●　With very high signal-noise ratio, strong interference resistance.

●　Intrinsic safety explosion protection certified infrared handheld programmer for wireless remote set up.

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Rada-31 is a 24GHz frequency modulated continuous wave (FMCW) radar level meter. It is designed with four-wire output and 100m measuring range. It is particularly suitable for applications that are under high level of dust and require large measuring range. The measurable medium includes cement, coal powder, fly ash, plastic powder, alumina powder, etc. Furthermore, Rada-31 has very high signal-to-noise ratio which provides an ideal solution for applications under extreme dusty environment.
Rada-31 FMCW Radar Level Meter is designed based on a voltage controlled oscillator (VCO). A signal with 24GHz base frequency 1GHz width ramping up linearly is generated by the internal electronic circuit. The radar wave is transmitted from the end of the antenna and complete one linear scan. When the transmitted wave hits the surface of the measured medium, it is partially reflected back and received by the same antenna. After Fast Fourier Transform (FFT), the signal carrying different frequencies in the time domain is converted into a frequency spectrum in the frequency domain. We know that the difference between the transmitting frequency and the frequency of the returned signal is proportional to the distance to the target. By identifying the difference between the transmitting frequency and the frequency of the returned signal, we can find out the distance between the antenna and the surface of the measured medium.
●　With high frequency dual core processor, processing returned signal faster and more reliable.
●　100mm measurement range, particularly suitable for applications that are under high level of dust and require larger measurement range.

●　With adjustable guide, effectively improves measurement reliable for sloping solids.

●　With very high signal-noise ratio, strong interference resistance.
●　Intrinsic safety explosion protection certified infrared handheld programmer for wireless remote set up.

Measurable solids	Dielectric constant	DK>1.4
Antenna	Type	Horn antenna
Antenna	Material	316L
Measurement parameters	Transmit frequency	24.2～25.2GHz (FMCW)
	Measurement range	100m
	Blind limitation	0.35m (count from the reference point)
	Deviation	0.25% of full measurement range or 25mm, whichever is larger.
	Repeatability	≤10mm
Power supply	DC	24V DC +25/-20%, 6W
Power supply	AC	120～230V AC,±15%, (50/60HZ), 6W
Signal output	Analog output	Optical isolation, 4～20mA
	Relay output	Max. 50V DC, 200mA, Rated 5W
	Communication protocol	HART, PROFIBUS-PA
	Fault protection	Programmable high, low or hold
Operation condition	Process pressure	Max. 0.5bar.
	Process temperature	-40～200℃
	Ambient temperature	-40～65℃
	Installation level	II
	Pollution degree	IV
Approval	Ingress protection rating	IP67
Approval	Explosion proof	Flameproof Enclosure: EXd IIC T4 Intrinsic Safety: EXia IIC T4
Materials	External housing	Aluminum coated withpolyester powder.
Materials	Process fitting	316L
Optional device	Dust cover	PTFE
Optional device	Purge device	1/8” NPT

●　Level measurement for variety of solids such as raw materials for chemical industry, alumina powder, ores, limestone, coal, cement, grains etc.
●　Level measurement mainly for industries such as chemical engineering, electric power, cement, environment protection and food processing etc.
For more information, please Contact：sales@jiweimeter.com

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