Analysis of the application of input level meter in water treatment

　　Submersible level gauges are mainly used in process flows with good water quality, such as supernatant collection tanks, filter tanks, clear water tanks, external drainage tanks and SBR tanks. By installing an isolation pipe to avoid sludge impurities at the bottom of the tank, it can also be used in a thickening tank with stirring. Below we will analyze the working principle of the submersible level gauge in water treatment and how to install specific applications in water treatment. A pressure instrument used for level measurement is a submersible level gauge, that is, the level measuring instrument is put into the medium of the liquid level to be measured. As the liquid level changes, the pressure detection elements such as diffused silicon in the pressure transmitter convert the static pressure into a resistance signal for liquid level detection. The submersible level gauge can be directly put into the medium to be measured.

　　The static pressure level measurement method is based on the principle that the static pressure of the liquid column is proportional to the height of the liquid column. The liquid level measurement is achieved by measuring the static pressure generated by the height of the liquid column. The differential pressure level gauge works on the principle that when the liquid level in the container changes, the static pressure generated by the liquid column also changes accordingly. The static pressure level gauge measures the liquid level by measuring the static pressure generated by the liquid level height. According to P=ρgh, the density ρ of the liquid and the acceleration of gravity g are known. As long as the pressure P is measured, the liquid level h can be calculated.

　　A pressure instrument used for level measurement is a immersion level gauge, which is to put the level measuring instrument into the medium of the liquid level to be measured. As the liquid level changes, the pressure detection element such as diffused silicon in the pressure transmitter converts the static pressure into a resistance signal for level detection. The immersion level gauge can be directly put into the medium to be measured. Features of immersion pressure level gauge.

　　(1) Simple structure, solid-state structure, no moving parts.

　　(2) It is very easy to install and use, and has a long service life.

　　(3) The measurement range is relatively wide, and it can measure everything from water and oil to phases with higher viscosity.

　　(4) It is not affected by bubbling, deposition, or electrical properties of the measured medium, has no material fatigue or wear, and is insensitive to vibration or impact.

　　(5) Cheap and highly reliable.

　　(6) During installation, pay attention to choosing a place where the fluid is relatively stable and has small fluctuations. If water flow impact and friction vibration cannot be avoided, it is necessary to install an isolation pipe to reduce water flow impact and ensure the accuracy and stability of the measurement.

　　(7) When installing the immersion level meter, it is best to install it 100mm to 200mm away from the bottom of the pool or tank to reduce the impact of silt and medium sediment on the bottom of the pool or tank on the measurement accuracy.

　　(8) In an environment with poor water quality, especially when the medium contains a lot of suspended matter and impurities, the pressure holes are easily blocked, affecting the measurement accuracy. The level meter needs to be cleaned and the pressure holes unblocked regularly to ensure accurate and stable measurement.