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Application case|80Ghz FMCW radar level transmitter applied to the measurement of the liquid level i

DATE: 2021-01-07

Application case|80Ghz FMCW radar level transmitter applied to the measurement of the liquid level in the refined evaporation kettle

Ethanol, an organic compound, molecular formula C2H6O, simple structural formula CH3CH2OH or C2H5OH, commonly known as alcohol. Ethanol can be used to make acetic acid, beverages, flavors, dyes, fuels, etc. Ethanol with a volume fraction of 70% to 75% is also commonly used in medical treatment as a disinfectant, etc. It is widely used in national defense chemical industry, medical and health, food industry, industrial and agricultural production.

Our 80G frequency modulated radar level transmitter measures liquid level and material level, non-contact level measurement, strong anti-interference ability, can overcome the influence of steam, foam and stirring on the measurement, and accurately measure various small-range storage tanks and reactors The liquid level.

Application case|80Ghz FMCW radar level transmitter applied to the measurement of the liquid level i

Let us take a look at the actual application performance of the radar level transmitter DCRD1000B4.

On-site working conditions and instrument parameters

 Application case|80Ghz FMCW radar level transmitter applied to the measurement of the liquid level i


Production workshop of a chemical company:

Instrument parameters of Radar level transmitter:

Model: DCRD1000B4

Medium: ethanol. Range: 2.50 meters. Process connection: DN125 PN16.

On-site working conditions: The tested device is a refined evaporator, which evaporates the water content in the medium to obtain ethanol with higher purity, multi-layer stirring, and 5-6cm foam.

Remarks: The liquid level instrument used before is a double flange differential pressure liquid level transmitter, and the measurement effect is not satisfactory.

 Application case|80Ghz FMCW radar level transmitter applied to the measurement of the liquid level i

Measurement process

This is an improvement of the measurement scheme. Because the installation port of the reactor is limited and the installation port is inclined and non-vertical, the radar level gauge needs to be installed vertically on the top to achieve the best measurement results. At the initial installation, although it was installed diagonally, the 80G FM radar level gauge has a relatively small launch angle, and the signal is not affected by the stirring blade. After debugging, the level can be measured.

The following is the measurement effect of the radar liquid level installed vertically, the signal is stronger. Since the measurement for several months, the signal is stable and the measurement is accurate.

 Application case|80Ghz FMCW radar level transmitter applied to the measurement of the liquid level i

Measurement results and analysis

After on-site testing, the 80Ghz frequency modulated radar level transmitter DCRD1000B4 was successfully applied to the level measurement of the ethanol solution in the evaporator, which overcomes the influence of steam, foam and stirring on the measurement, and achieves a satisfactory measurement effect for users。


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    The radar level transmitter should be installed to avoid contact between the sensor and the tank wall and should be kept at a certain distance from the tank wall. Because the radar level transmitter is measured by transmitting high-frequency microwave pulses along the detection component, the dielectric constant changes when these pulse waves encounter the measured medium, causing the emission. Therefore, if the installed radar level transmitter is too close to the tank wall, the dielectric constant of the tank wall may be obtained, which directly leads to the in accuracy of the measured parameters.Correct installation method of radar level transmitter:1. Installed one fourth or sixth of diameter.Note:the minimum distance from the tank wall shall be one tenth ...
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