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1. When installing a radar level gauge, one should avoid locations near the feed inlet, feed curtain, and vortices; this is because the liquid being poured in generates false echoes whose amplitude is much greater than that of the actual echoes reflected from the measured liquid level. At the same time, the irregular liquid levels caused by vortices scatter microwave signals, leading to a reduction in the intensity of the effective signals; therefore, such vortices should be avoided ； 2. For containers equipped with agitators, the radar level gauge should not be installed near the agitator, as the agitation creates irregular vortices that can cause attenuation of the radar signal. At the same time, the blades of the stirrer can also generate false echoes for the microwave signals; this effect is particularly severe when the relative dielectric constant of the object being measured is low or when the liquid level is low ； 3. When radar level gauges are used to measure the level of corrosive or crystallizing liquids, in order to prevent the medium from affecting the sensor, manufacturers generally employ a design with a polytetrafluoroethylene measurement window and a separated flange structure. The temperature of these components cannot be too high; the maximum temperature for polytetrafluoroethylene is 200°C. To avoid the effects of high temperatures on the radar antenna, and to prevent crystals present on the diaphragm from interfering with the proper operation of the instrument, it is required that there be a safety distance of at least 100–800 mm between the flange face and the highest liquid level. Precautions: 1. When testing the radar level gauge, do not forget to conduct the measurement while it is powered on; otherwise, the measurement is meaningless. During live measurement, the main thing to check is whether the current output of the radar level gauge is normal. 2. When using devices such as logic probes or waveform displays to detect signals from a radar level gauge, it is necessary to bring different probes into contact with the gauge’s measurement pins at the same time, in order to check whether a short circuit occurs. 3. When checking the filtering capacitor of the radar level gauge, first short-circuit the positive and negative terminals of the electrolytic capacitor; however, it must not be discharged, as this could lead to measurement errors as well as damage to the internal wires. 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 gauges. At present, the company offers a range of products including radar level gauges, external liquid level meters, fork-type level switches, electro-hydraulic actuators, ultrasonic flowmeters, and external thermometers. 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…