The difference between guided wave radar level gauge and pulse radar level gauge

What is the difference between a guided wave radar level gauge and a pulsed radar level gauge? How to choose the guided wave radar level gauge and the pulse radar level gauge? 1. From the structural point of view, the difference between the pulse radar level gauge and the guided wave radar level gauge is the contact type and the non-contact type; the type is selected according to the industrial and mining environment, and the pulse is transmitted and received through the beam angle of the horn mouth. Microwave. Guided waves travel around and receive signals through rods or cables. The pulse radar level meter uses high-frequency or low-frequency wave pulses to transmit and receive through the antenna system. The radar wave runs at the speed of light, and the running time can be converted into a level signal through electronic components. The main difference is the principle and structure. The guided wave radar level gauge is a measuring instrument based on the principle of time travel. The radar wave runs at the speed of light, and the running time can be converted into a level signal through electronic components. 2. According to the situation on site: what kind of material solids and powders are measured on site. Usually, a pulsed radar level meter is used (such as coal mine, slag, etc., and a guided wave radar level meter is considered for the case of large dust. 3. According to Consider the dielectric constant of the medium to be measured: the liquid usually uses a guided wave radar level gauge, which can be measured normally when the dielectric constant is greater than 0.7. The choice of the flange of the guided wave radar level gauge is usually based on the size of the opening on the customer's site. Fixed, normally equipped with DN100 flange. Guided wave radar can be divided into rod type and cable type, usually cable radar level gauge is used, so it is more convenient to transport. But for those with corrosion resistance requirements, rod type radar level gauge is used , For liquids that are not very corrosive, a pulsed radar level gauge can also be considered. 4. According to the temperature provided on site, determine whether to add a heat sink. Yes, I choose the radar level gauge with heat sink when the temperature is higher than 130℃-250℃. At present, I do not give up the measurement of the ambient temperature greater than 250℃. 5. According to the pressure parameters provided on site, choose the thickness of the flange and related For normal pressure, do not need to consider it. 6. Whether explosion-proof is required according to the site environment and customer requirements, usually chemical liquids, coal mines, etc. need explosion-proof. 7. If a pulse-type radar level meter is used, we should be conservative in the selection of speakers and try our best to Selecting a larger point can better ensure the stability of the customer's measurement. 8. It is determined according to the on-site measurement range. In addition, the pulsed radar level gauge is divided into two: low frequency pulse radar level gauge and high frequency pulse radar level gauge The limit height that can be measured by the low frequency pulse radar level gauge is 35 meters, while the limit height that can be measured by the high frequency pulse radar level gauge is 70 meters. The guided wave radar level gauge is also divided into two types, one is The other type of rod type radar level gauge is the cable type radar level gauge. The limit range of the rod type radar level gauge is 6 meters, while the limit range of the cable type radar level gauge is 30 meters. These decisive parameters are all Taking this into account, you can choose the most suitable liquid level meter

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