Problems Existing in the Application of Radar Level Meter

The radar level gauge used in some working conditions has some problems due to the improper installation position and conditions of the sensor. The following will propose solutions to some problems in use for your reference. 1. The first solution to the scarring of the probe and frequent failures is to increase the installation position of the probe, but sometimes the installation conditions are limited and if it cannot be improved, the method of interlocking the measured value of the material level with the pump of the tank should be adopted , To solve this problem: reduce the maximum material level setting value by about 0.5m, when the material level reaches the maximum value, you can stop the feed pump or start the discharge pump. 2. KERD-800/900 series radar level gauge The corresponding improvement method of the radar level gauge being flooded; the solution to this problem is to change the radar level gauge into waveguide type measurement. The waveguide type radar level gauge is still installed at the original opening, and the waveguide is about 0.2m higher than the exhaust pipe. The antenna of the potentiometer is submerged in the slurry, and it avoids the interference of the eddy current of the agitator and a large amount of steam coming out of the probe, which reduces the damage to the probe. At the same time, due to the good focusing effect of the waveguide, the received radar wave signal is stronger, achieving good measurement results. Using the waveguide measurement method can improve the measurement conditions of the meter and improve the measurement performance of the meter, which has a high value of promotion and application. 3. About the effect of foam on measurement: dry foam and wet foam can reflect radar waves back without affecting the measurement; neutral foam will absorb and diffuse radar waves, thus seriously affecting the reflection of echoes or even no echoes. When the surface of the medium is dense and thick foam, the measurement error is large or cannot be measured. In this case, the radar level gauge has no advantages, which is the limitation of its application. 4. For the treatment of antenna scarring: the material with a small dielectric constant has no effect on the measurement in a dry state, while the material with a high dielectric constant has an impact on the measurement. It can be blown with compressed air (or flushed with clean water), and the cooled compressed air can reduce the temperature of flanges and electrical components. Alkaline scabs can also be cleaned with acidic cleaning solutions, but level measurement is not possible during cleaning

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