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What is the difference between the frequency applications of radar level gauges?

What is the difference between the frequency applications of radar level gauges?

2022-03-17

Radar level gauge is a commonly used equipment in industry and has many specifications. For example, the frequency of a radar level gauge will be divided into high and low. What is the difference between the frequency applications of radar level gauges?


What is a high frequency radar level gauge?

 

The high-frequency level gauge is a radar level gauge with a transmission frequency of up to 26GH7/24GHz, which increases the radar level measurement distance and accuracy. The appearance of the antenna has been further optimized and the appearance equipment has been improved accordingly for higher speed analysis. Combining these factors, the performance of the instrument has been greatly improved, overcoming more complex measurement conditions and obtaining more accurate measurement data. 

What is the difference between high frequency and low frequency applications of radar level gauges?

 

1. Influence of frequency on measurement: The magnetrol radar level gauge emits electromagnetic waves through the antenna. The higher the frequency of the electromagnetic wave, the higher the energy of the electromagnetic wave, the shorter the wavelength, the more obvious the scattering phenomenon; on the contrary, the lower the energy, the longer the wavelength, the less easily absorbed by the gas phase layer. For the same size antenna, the level gauge with a wavelength of 1.2cm and a frequency of 26GHZ is 6 times longer than the level gauge with a wavelength of 3cm and a frequency of 10GHZ. The total beam-width of a mine level gauge is inversely proportional to the frequency of the device. Therefore, if the frequency of the radar level gauge is increased, the width of the beam will be lower.

 

Be prepared, the narrow beam minimizes the effects of nozzles, cans and distractor. At the same time, the measurement of the radar level gauge is also affected by the frequency, the size of the antenna, the amount of the liquid dielectric constant and the process conditions.

 

2. How to choose: measure steam and foam, when there is condensate, first choose low frequency radar. If it is for ease of installation, first choose a high-frequency radar. Lower frequencies reduce susceptibility to vapor, foam, and antenna contamination, and low-frequency radars have wider wave velocity angles to better handle problems with vapor, dust, condensation, pollution, and turbulent surfaces. Higher frequencies can reduce the effect on nozzles, tank walls and interferes to a minimum.

 


The above is written to help users fully understand the frequency of radar level gauges, so that they can better choose to use high-frequency radar level gauges or low-frequency radar level gauges in specific working conditions. There is an answer.




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