Common Application Of Radar Level Gauge in The Industry

The application of the level meter in the industry has been very popular, but the parameters and selection of the radar level meter are very important. The radar level meter is a new type of measuring instrument, which can be used in many fields. And slurry continuous level measurement, the measurement is not affected by medium change, temperature change, inert gas and steam, dust, foam, etc. The accuracy of the radar level gauge is 1MM, the range is 70 meters, and it can withstand high temperature of 450 degrees and high pressure of 40 kg. The radar level gauge is suitable for acid-base storage tanks, slurry storage tanks, solid particles, and small oil storage tanks in explosion-hazardous areas. All kinds of conductive, non-conductive media, corrosive media, many users are used to measure crude oil, slurry, raw coal, pulverized coal, volatile liquid and solid media.

1. In industrial production, radar level gauges are used in many places, such as whitening barrels, hot mother liquor barrels, cold mother liquor barrels, lye relieving conflict tanks in the evaporation and suction carbonization section, causticizing liquid tanks in the salt water conservancy section, Alkali tank, bleach tank, crude salt water tank; crystal forming vessels in the calcination section, etc. Some of these vessels are easy to form crystals and stir; some are volatile, corrosive, turbulent, and flow fast; , Slurry with foam and water vapor. Obviously, contact instruments are difficult to meet the requirements, and they have used differential pressure transmitters before, but they have not been successful. After using the DEC radar level gauge, the radar receiving antenna thinks it is suitable to use a 6"horn mouth receiving antenna, a beam angle of 23°, and a microwave frequency of 26GHz. It is a medium that is easy to form crystals, and it is considered appropriate to use steam reflection. Blow. All of these have been successfully used in production with great results.

2. Application in level survey of pure soda silo. The pure soda packaging silo has a large amount of dust and the material level is cone-shaped. The sound difference switch has been used. The survey error is large, the maintenance workload is large, and false alarms are often reported. The cable radar has the following advantages: the detection is not affected by the density of liquid, the porosity of solid materials, the temperature of materials, and the dust during feeding; it is also not affected by the foam on the surface of objects; it has self-diagnosis and long-distance operation display functions, etc. So far, all pure soda silos have used cable-type radar level gauges, which are stable in operation, very accurate in surveying, and can serve production well.

3. In the application of quicklime kiln material level and ash bin material level, the temperature of quicklime kiln top material level is high, the vent part can sometimes reach more than 200 degrees, and the material part can reach close to 1000 degrees; the gas flow rate is large, the dust particles are large, and the liquid concentration Large; the lower material is irregular stone, the material surface is not fair, and the wave is easy to scatter. For ordinary radar, it is difficult to be suitable for use in this survey background. For this kind of situation, choose radar, the radar receiving antenna thinks it is appropriate to use a parabolic receiving antenna, the size of the collection plane or the surface of the object is large, and it is not easy to be distorted; the beam angle is small, only 4 degrees, and the emitted microwave beam is concentrated; the microwave frequency is 26GHz, High frequency, staggered wave, strong penetrating power, can overcome harsh survey backgrounds such as particles and dust, and overcome the problem of scattering of bulk materials; connect compressed air to the upper part of the bell mouth for purging, first, to prevent dust accumulation On the receiving antenna, the parabolic collection surface is congested, and at the same time, the background temperature of the instrument is reduced to ensure a suitable survey background for the radar level gauge, which can prolong the service life of the instrument.