Why weren’t the 26G radar level gauge and the 80G radar level gauge chosen when making the purchase?
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A radar level gauge is a measuring instrument that determines the level of a substance by emitting and receiving reflected electromagnetic waves. There are two types: pulse-type and frequency-modulated continuous wave type. The 26g and 80g radar level gauges discussed today are related to frequency-modulated continuous wave technology; they rely on the frequency difference of such waves for measurement. Utilizing synchronous frequency modulation technology, microwave signals that have been frequency-modulated are sent toward the surface of the substance through transmitters and receivers installed at the top. When a microwave signal is sent downward and encounters the surface of a liquid, it is reflected back and captured by the receiver. The distance covered by the radar wave is calculated based on the frequency difference between the transmitted wave and the reflected wave, as well as the time delay between transmission and reception. This distance is generally proportional to the frequency modulation range; the greater the range, the farther the distance, and the better the linearity and resolution. The difference between radar level gauges of 26g and 80g lies in the wavelength of the microwaves. Microwaves are electromagnetic waves with frequencies in the range of 300MHz to 3x103GHz, and their wavelengths vary from 0.1 mm to 1 m. Based on their frequency ranges, they can be classified into four categories: decimeter waves (frequency range: 300MHz to 3GHz), centimeter waves (frequency range: 3 to 30GHz), millimeter waves (frequency range: 30 to 300GHz), and submillimeter waves (frequency range: 300MHz to 3x103GHz). The 26g radar level gauges available on the market currently have a wavelength of 11 mm, belonging to the category of microwave radars that operate in the centimeter-wave band. The 80g radars, on the other hand, have a wavelength of 4 mm and are millimeter-wave radars that function in the millimeter-wave band. Therefore, even though they are both radar level gauges, there is a difference between 26g and 80g, and that lies in the different microwave wavelengths. Therefore, when selecting a product model, it is necessary to choose the appropriate wavelength type based on the actual operating conditions and parameters.
When deciding between a 26G radar level gauge and an 80G radar level gauge, the following factors need to be considered: 1. Medium being measured: If the medium absorbs microwaves strongly, an 80G radar with a higher frequency may be required. 2. Container structure: In cases where there is stirring or foaming inside the container, the 80G radar has a smaller beam angle, making it easier to avoid interference. 3. Measurement range: 26G is suitable for wide-range measurements, while 80G is suitable for applications requiring high precision over a smaller range. 4. Cost budget: The cost of radar level gauges with different frequencies may vary. 5. Environmental conditions: Factors such as temperature and pressure can influence the selection of radar level gauges. Select the appropriate radar level gauge based on the actual operating conditions and measurement requirements. .
Just choose based on the material; if there is strong interference, use a low frequency, otherwise consider a high frequency