Application of Guided Wave Radar Level Gauge in Foaming and Stirring Media

Guided wave radar level gauge is a commonly used radar level gauge. The measurement of the guided wave radar level gauge in foam-containing liquids and stirring tanks is installed with a still-pipe or bypass pipe, which can avoid obstacles in the container, The influence of foam and liquid surface fluctuations on the measurement. In the following cases, it is recommended to use a still-pipe or bypass pipe. 1. There is conductive foam; 2. The liquid level fluctuates violently; 3. There are too many obstacles at the installation location; 4. Measure the liquid in the inner floating roof tank (such as some media in the petrochemical industry); 5. Medium whose dielectric constant is too small; Note: Too viscous medium cannot be measured with a still-pipe or a bypass pipe; the requirements of the guided-wave radar level meter for a still-pipe or bypass pipe 1. Guided wave The pipe or bypass pipe must be a conductor; 2. The inner diameter of the still-pipe or bypass pipe must not be less than 50mm; 3. The still-pipe or bypass pipe must be vertical; 4. The still-pipe or bypass pipe must have a smooth inner wall, Avoid large welds and cracks, and the roughness must be better than ±0.1mm; 5. The inner diameter of the still-pipe or bypass pipe is not allowed to change abruptly, if there is a sudden change, it must be less than 1mm; 6. The bottom of the still-pipe must be open; 7. The guide pipe When the wave tube is installed, an isobaric hole must be opened above the highest point where the liquid level can reach, and the diameter of the isobaric hole is (5-10) mm; 8. When there are various mixed liquid media in the tank, multiple guide holes / The pipe is conducive to the free flow of liquid in the tank and the pipe; 9. When there are various mixed liquid media in the tank, the spacing of multiple guide holes/pipes must be less than the minimum layer thickness; 10. When the bypass pipe is installed at the top The position of the isobaric pipe should be higher than the highest point that the liquid in the tank can reach; 11. When the bypass pipe is installed, the position of the bottom guide pipe should be lower than the lowest point that the liquid level in the tank can reach;
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