Dinghua Radar Instrument Training School: Precautions for using the guide wave tube in radar level gauges

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Every component of a radar level gauge has its own function and role, and it is necessary to use them in strict accordance with the specified requirements. Among these components, the guide wave tube of the radar level gauge is one that requires particular attention to every detail during use. Next, the operational requirements for the guide tube of the radar level gauge are explained as follows: 1. When installing the radar level gauge, certain requirements are imposed on the guide tube – its inner diameter must be 102.3 millimeters, with a wall thickness of 6 millimeters – and the installation must ensure that the vertical deviation is less than +/-0.5 degrees. 2. A support frame must be constructed at the bottom of the radar level gauge; the gap between this frame and the guide wave tube should be 15 to 30 millimeters, in order to reduce the impact of turbulence during feeding. A reflector plate and a calibration ring must also be installed at the bottom of the guide wave tube. 3. The inner wall of the waveguide must be smooth, without any burrs. Furthermore, a balance hole with an inner diameter of 20 millimeters must be drilled every 500 millimeters, and the eccentricity of such holes must be within 0.5 degrees. Furthermore, the welding of each waveguide segment to the next is carried out using a sleeve welding method, with a gap of less than 1 millimeter, an eccentricity within 1 degree, and a straightness within 0.5:100. The top flange of the guide tube on which the radar level gauge is installed should be equipped with a flange corresponding to the equipment, and markings should be made in advance on this flange along the direction of the centerline of the balance hole in the guide tube; these markings must align with the marking holes on the gauge’s flange. The specific requirement for the flange is that its installation level deviation must be less than +/-1 degree. A reference pin is installed on the waveguide at a distance of about 2.5 meters from the mounting flange. Only by following the detailed usage instructions provided by the manufacturer or supplier, installing the product correctly, and paying attention to every detail can the accuracy of subsequent measurements of the product be ensured. 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…