Doppler Radar Level Gauge Transmitter With Good Adaptability To Floating

MOQ： 1Set
Price： Negotiable
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Payment Terms	L/C,D/A,D/P,T/T,Western Union
Supply Ability	100PCS/Month
Delivery Time	5-8 work days
Packaging Details	Carton
Application	powder,corrosive liquid,strong dust etc,Solid particles,heavy steam conditions
Process connection	Flange,Screw thread,Thread G11/2 A"/Frame/Flange,Atmospheric,Flange(optional)
Output Signal	4-20 mA, HART, Modbus
Range	6m
Temperature Range	-40℃~+120℃
Model	DTS-RD-85-A
Process Connection	Flange from DN50
Connection	Bluetooth/NB-iot/4G
Measurement Principle	Microwave Radar
Protection Class	IP67
Brand Name	QINWEIYB
Model Number	QWRD80G610
Certification	Explosion-proof certificate ，Safety certificate
Place of Origin	China

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Product Specification


Payment Terms	L/C,D/A,D/P,T/T,Western Union	Supply Ability	100PCS/Month
Delivery Time	5-8 work days	Packaging Details	Carton
Application	powder,corrosive liquid,strong dust etc,Solid particles,heavy steam conditions	Process connection	Flange,Screw thread,Thread G11/2 A"/Frame/Flange,Atmospheric,Flange(optional)
Output Signal	4-20 mA, HART, Modbus	Range	6m
Temperature Range	-40℃~+120℃	Model	DTS-RD-85-A
Process Connection	Flange from DN50	Connection	Bluetooth/NB-iot/4G
Measurement Principle	Microwave Radar	Protection Class	IP67
Brand Name	QINWEIYB	Model Number	QWRD80G610
Certification	Explosion-proof certificate ，Safety certificate	Place of Origin	China
High Light	Doppler Radar Level Gauge ，Radar Level Gauge Transmitter ，Doppler Radar Level Transmitter

Doppler radar level gauge is an instrument that measures liquid level by using the Doppler effect. It calculates the liquid level by measuring the frequency change of the radar signal after interaction with the liquid or material.

Main Features and Advantages

The measurement object is the movement speed: This is the most fundamental difference between it and FMCW radar (distance measurement) and pulse radar (distance measurement). Essentially, it is a non-contact speed sensor.
Sensitive to movement, insensitive to stillness: Only when the liquid surface or particles are in motion does it have an effective signal output. A completely still liquid surface will produce an echo with the same frequency as the transmitted frequency, without frequency shift, and thus cannot be effectively detected.
Non-contact and wear-free: Compared with mechanical flowmeters or contact liquid level gauges, it is suitable for abrasive and corrosive media.
Simple installation: Usually, it only requires a hole to be drilled on the top of the tank for installation.

Typical application scenarios

Open channel / non-full pipe flow measurement: This is the main application. Install it above the channel or pipe to measure the flow velocity of the water surface. Combined with the known cross-sectional shape and water level height (usually requiring a separate level gauge), the volume flow can be calculated.
Solid level switch / flow monitoring:
- Level switch: Install it on the side or top of the silo. When solid particles (such as plastic pellets, grains, coal powder) are falling or flowing, the sensor can detect the movement and output a switch signal for high-level or low-level alarm to prevent overflow or idling.
- Chute / drop pipe flow monitoring: Monitor whether solid materials are flowing, blocked or cut off in the conveying pipe or chute.
Special liquid level measurement:
- For measuring liquid surfaces with severe fluctuations or agitation. Traditional distance-measuring radars may have unstable signals due to waves, while Doppler radar takes advantage of such fluctuations to generate signals.
- For measuring liquid surfaces covered with foam. The foam layer itself may be in motion and can be detected.

Comparison with Continuous Wave Radar

Characteristics	Doppler Radar Level Gauge	Continuous Wave Radar Level Gauge
Core Principle	Doppler effect, measuring frequency change (velocity).	Frequency modulated continuous wave, measuring frequency difference (distance).
Measurement Target	Motion speed of liquid surface/particles, indirectly calculating flow or serving as a switch.	Absolute distance from antenna to material surface, directly calculating liquid level.
Response to Static Medium	No output or invalid output.	Accurate measurement possible.
Output Signal	Usually switch signal or analog signal proportional to speed.	High-precision continuous analog signal or digital signal proportional to liquid level.
Accuracy	Relatively low, mainly used for process monitoring and switch control.	Extremely high, suitable for trade settlement and precise control.
Cost	Generally lower.	Generally higher.
Main Applications	Open channel flow, solid material flow switch, moving liquid surface monitoring.	Accurate liquid level measurement in storage tanks, process vessels, and water pools.

Doppler radar level gauge is a specific-purpose instrument that generates signals through motion. It is not a traditional "level gauge" used to measure static height, but rather more like a "motion detector" or "flowmeter". The right time to choose it is when you need to monitor whether materials are flowing, measure the flow in open channels, or detect fluctuating material level switches.

Company Details

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Business Type:

Manufacturer,Distributor/Wholesaler,Exporter 
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Year Established:

Establishe 
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Total Annual:

5 million-10 million
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Employee Number:

500~800 
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Ecer Certification：

Verified Supplier 

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Xi 'an Qinwei Instrument Factory (General Partnership Enterprise)
No. 143, Sanqiao Street, Xi'an City, Shaanxi Province, China
https://www.radarlevelgauges.com/

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