Selection scheme of radar level gauge in different working conditions

When selecting a radar level gauge, not only should it be judged according to the volume and shape of the container, but also the influence of corrosiveness, foam, steam, etc. Below we introduce the selection skills of radar level gauges in different industrial and mining situations: 1. The influence of the container where the medium is located on the selection of radar level gauges The level gauge has no effect. All three can be used. On a closed container, the minimum guided wave radar level gauge can be installed on the DN40 nozzle, and the low frequency bell mouth radar and the high frequency bell mouth can be installed on the minimum DN50 nozzle, provided that there is no stirring, foam, steam, vacuuming , If there are these situations, the high-frequency radar should be installed with a DN100 flange at least, and the low-frequency radar should be installed with a DN150 flange. 2. Selection of corrosive liquids The flange and cable of the guided wave radar level gauge are made of 304 material by default. When encountering general corrosive liquids, you can choose 316 material. When encountering strong corrosive liquids such as hydrochloric acid and nitric acid, you can choose PTFE. vinyl. The flange and bell mouth of the low-frequency bell mouth radar are made of 304 material by default. When encountering general corrosive liquids, you can choose 316 material. When encountering strong corrosive liquids such as hydrochloric acid and nitric acid, spray tetrafluoride. The flange and bell mouth of the high-frequency bell mouth radar are made of 304 material by default. When encountering general corrosive liquids, you can choose 316 material. When encountering strong corrosive liquids such as hydrochloric acid and nitric acid, spray tetrafluoride. When encountering strong corrosive liquids such as hydrochloric acid and nitric acid, low-frequency rod radar and high-frequency rod radar are more suitable. Both radars are designed for use in highly corrosive environments. It should be noted that the blind spot of the low-frequency stick radar is relatively large, 0.5-0.7 meters, which is not suitable for small tanks. 3. Selection of foamed liquid. There is no more than 2 cm of foam on the surface of the liquid, which has little effect on the measurement. For the foam of more than 2 cm, pay attention to the thickness and size of the foam. In foams measuring more than 2 cm, fine foams are less easily penetrated by radar electromagnetic waves than large foams. At the same thickness, the thicker the foam, the less likely it is to penetrate. In this case, it is more suitable to use low-frequency bell-mouth radar than high-frequency bell-mouth radar. If it is non-adhesive foam, the guided wave radar level gauge can easily penetrate the foam and accurately measure the liquid level below the foam. 4. Model selection with steam environment In the steam environment, it has little effect on the guide radar. It has the least impact on the low-frequency bell-mouth radar, and also has a large impact on the high-frequency bell-mouth radar level gauge.

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