Solid radar level gauge

The editor found that many netizens are searching for the term 'solid radar level gauge' recently. With the continuous advancement of industrial automation, radar level gauges have become one of the most popular products in many factories. Of course, there are also some small partners who have just entered the automation industry who are not very familiar with this product, so I will give you some relevant introductions here. The radar level gauge is a radar level gauge based on the principle of time domain reflection (TDR). The electromagnetic pulse of the radar level gauge propagates along the steel cable or probe at the speed of light. When it encounters the surface of the measured medium, the radar level Part of the pulse of the meter is reflected to form an echo and returns to the pulse transmitter along the same path. The distance between the transmitter and the surface of the measured medium is proportional to the propagation time of the pulse between them, and the liquid level height is calculated. Yes, there are many similarities between the working principle of radar level gauges and ultrasonic level gauges, and they also have many common advantages: 　　1. Radar level gauges can measure liquid and solid media such as crude oil, slurry, raw coal, Pulverized coal, volatile liquids, etc.; 　　2, can be measured in a vacuum can measure all media with a dielectric constant >1.2, the measurement range can reach 70m; 　　3, power supply and output signal through a two-core cable (loop circuit), using 4...20mA output or digital signal output; 　　4, non-contact measurement and installation are easy to use extremely stable materials, strong and durable, accurate and reliable resolution can reach 1mm; 　　5, not affected by noise, steam, dust, vacuum and other working conditions; 6. The process pressure can reach 400bar, the temperature of the medium can reach -200℃ to 800℃ without the change of medium density and temperature; 　　 7. There are a variety of installation methods to choose from: top installation, side installation, bypass pipe installation, guide Wave tube installation; 　　 8. Debugging can be selected in a variety of ways: using programming module debugging (equivalent to an analysis and processing instrument), SOFT software debugging, HART handheld programmer debugging, it is convenient and quick to debug. It can be seen that the applicable working conditions of the radar level gauge are It is very wide, whether it is liquid or solid particles can be measured, so what should be paid attention to during the use of the radar level gauge? 　　 1. The measurement range starts from the point where the beam touches the tank low, but in special In this case, if the bottom of the tank is concave or tapered, measurement cannot be performed when the level is lower than this point.　　2. If the medium has a low dielectric constant, the bottom of the tank is visible when it is at a low level. At this time, in order to ensure the measurement accuracy, it is recommended to set the zero point at the low height C.　　3. It is theoretically possible to measure the position of the antenna tip, but considering the effects of corrosion and adhesion, the final value of the measurement range should be at least 100mm away from the antenna tip.　　4. For overfill protection, a safety distance can be defined to attach to the blind zone. 5. The minimum measurement range is related to the antenna. As long as you can pay attention to the above points, you can avoid many unnecessary problems in the selection and measurement process. Of course, if you have other questions about the radar level gauge, the editor can give it here. Everyone introduces a manufacturer specializing in the production of radar level gauges-Kaidi Sensing Technology Co., Ltd. is a manufacturer specializing in the production of automation instruments. There are professional engineers in-house to provide free selection and installation instructions. If you have any questions, you can ask them consult.

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