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Radar level gauges are used quite frequently in measurement systems across various industries, and they are affected by many factors during use, which may impact the accuracy of measurements. The technical staff at Xi’an Dinghua Electronics, drawing on their many years of practical experience in production and testing, explain to customers the various factors that can cause interference when using radar level gauges during measurement. I. During the measurement process with radar level gauges, common interferences can be divided into two types: DC and AC interference. 1. DC interference: In the measurement circuit of radar level gauges, the presence of an additional DC voltage constitutes DC interference. In severe cases, it will prevent the measuring instruments from functioning properly. The sources of DC interference include the following: (1) additional thermoelectromotive force. (2) Chemical potential. (3) When the radar level gauge comes into contact with a DC power supply, the leakage current will generate an interference voltage in the measurement circuit. 2. Communication interference: Communication interference can be further divided into inter-line interference and ground-related interference. Inter-wire interference refers to the occurrence of alternating voltage between the output terminals of a radar level gauge (compensation wires) as a result of external influences. This type of interference is also known as lateral, common-mode, or common-terrain interference. Under normal conditions, the inter-wire interference voltage can reach several millivolts or even dozens of millivolts. Ground interference refers to the phenomenon that occurs at one of the two output terminals of a radar level gauge (or compensation wire); the AC voltage at that terminal with respect to ground is known as the ground interference voltage. This type of interference is also known as longitudinal, intermodulation, or serial interference. Under normal circumstances, the interference voltage relative to ground can reach several volts or even over 100 volts. The main sources of alternating current interference are as follows: (1) Electromagnetic induction is the primary source of interference between wires. (2) Effects of high-temperature leakage. (3) High-voltage electric field interference. (4) Geoelectric current interference. (5) Impact of suction and leakage currents. (6) Temperature measurement on live conductors can also introduce AC interference. Xi’an Dinghua Electronics Co., Ltd., established in 1992 and currently located in Xi’an, Shaanxi Province, is a high-tech enterprise that specializes in the research and development, production, sales, and engineering services of radar level measurement instruments. At present, the company offers a range of products including radar level gauges, external measurement level instruments, fork-type level switches, electro-hydraulic actuators, ultrasonic flow meters, and external temperature sensors. All of these products have withstood numerous complex operational conditions in real-world settings, and they are widely used in industries such as petroleum, chemicals, power generation, coal mining, metallurgy, as well as food and pharmaceuticals. Professional selection guidance, excellent product quality, reasonable prices, fast delivery times, and comprehensive pre-sales, in-sales, and after-sales services…