Problems that should be paid attention to in the installation of radar level gauge

Problems that should be paid attention to in the installation of radar level gauges (1) When measuring liquid materials, the axis of the sensor and the surface of the medium are kept vertical; when measuring solid materials, because the solid medium has a pile angle, the sensor must be tilted to a certain angle. (2) Try to prevent devices that form false reflections within the emission angle. In particular, it is necessary to avoid obstructing devices in the 1/3 cone-shaped emission area closest to the antenna (because the closer the obstructing device is, the stronger the false reflection signal is). If it cannot be avoided, it is recommended to use a refraction plate to refract the excessive false reflection signal. This can reduce the energy density of false echoes, making it easier for the sensor to filter out false signals. (3) Avoid the feeding port to prevent false reflections. (4) The sensor should not be installed in the middle of the arched tank (otherwise the false echo received by the sensor will be enhanced), and it should not be installed very close to the tank wall. The best installation position is 1/2 of the container radius. (5) Keep the equipment away from places with strong eddy currents. For example: due to mixing or strong chemical reaction, etc., it is recommended to use waveguide or bypass tube for measurement. (6) If the sensor device is on the receiver, the antenna must protrude from the receiver. The horn antenna extends to receive at least 10mm. Rod antenna receiving length up to 100 or 250mm. The minimum receiving diameter is 250mm. The method of increasing the receiving diameter can be adopted to reduce the interference echo caused by receiving. (7) Regarding the waveguide antenna: the inner wall of the waveguide must be lubricated, and the bottom opening of the waveguide must reach the required minimum liquid level, so that it can be measured in the pipeline. The type plate of the sensor should be aligned with the axis of the waveguide opening. If the measured dielectric constant is less than 4, it is necessary to install a reflector at the end of the waveguide, or bend the end of the waveguide into a curvature to refract the reflected echo at the bottom of the container. Pulse Radar Level Meter

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