What to look for when installing a radar water level meter

　　Whether the radar water level meter can measure correctly depends on the signal of the reflected wave. If the water surface cannot reflect the electromagnetic wave back to the radar antenna at the selected installation location or there are interference objects within the range of the signal wave that reflect interference waves to the radar water level meter, the radar water level meter cannot correctly reflect the actual water level. Therefore, it is very important for the radar level meter to reasonably choose the installation location. The following points should be noted during installation:

　　1. The axis of the radar level meter antenna should be perpendicular to the reflecting surface of the liquid level.

　　2. If the stirring valve in the tank, the adhesion of the tank wall and the stairs are within the signal range of the radar level meter, they will generate interfering reflected waves and affect the liquid level measurement. When installing, choose a suitable installation location to avoid interference from these factors.

　　3. The horn mouth of the horn-type radar level meter should exceed the inner surface of the installation hole by a certain distance (≥10mm). The antenna of the rod-type level meter should extend out of the installation hole, and the length of the installation hole cannot exceed 100mm. For circular or elliptical containers, it should be installed at a distance of 1/2R (R is the radius of the container) from the center, and should not be installed at the center of the top of the circular or elliptical container, otherwise the radar wave will converge at the center of the top of the container after multiple reflections on the container wall, forming a strong interference wave, which will affect accurate measurement.

　　4. For the liquid level measurement of containers with large liquid level fluctuations, a liquid level meter with a bypass pipe can be used to reduce the impact of liquid level fluctuations. After installation, the reflected wave curve can be observed with a PC to determine whether the liquid level meter is properly installed. If not, further adjust the installation position until you are satisfied.

　　For interference waves that cannot be avoided in some installation locations, the level meter can identify the interference reflected waves according to the actual liquid level and store them in the internal database of the radar level meter, so that the radar level meter can identify these interference waves during data processing, remove the influence of these interference reflected waves, and ensure the accuracy of measurement.