The monitoring and control of liquid levels has become increasingly important in industrial automation. In industries such as beverages, daily chemicals, pharmaceuticals and semiconductors, liquid level directly affects the quality of products. When choosing measurement equipment, we not only need to know the properties and status of the measured liquid, but also understand the advantages and disadvantages of different measurement methods of liquid level, in order to choose a more suitable equipment. Float detection: This method is a simple and old detection method, and the price is relatively cheap. Mainly through the float up and down to detect changes in the liquid level, its mechanical detection, detection accuracy is easily affected by buoyancy, repeatability is poor, different liquids need to be recalibrated. Not applicable to viscous or impurity-containing liquids, easy to cause float blockage, at the same time, does not meet the application requirements of the food hygiene industry. Tuning Fork Vibration Measurement: Tuning fork measurement is only a switching output, and cannot be used for continuous monitoring of liquid height. The principle is: when the liquid or bulk material filled with two vibrating forks, resonance frequency change, relying on the detection frequency change and send a switch signal. It can be used for high viscosity liquid or solid bulk material height monitoring, mainly for overflow alarm, low level alarm, etc., does not provide analog output, in addition, most cases need to be installed on the side of the container openings. Guided wave radar / microwave principle measurement: its name in the industry there are a variety of different names, features include: easy to install, calibration, good flexibility, such as no need to repeat the calibration and multi-function outputs, etc., for a variety of foam-containing level detection, not affected by the color of the liquid, and can even be applied to highly viscous liquids, by the external environment is relatively small interference, but its measurement height is generally less than 6 meters. Capacitive measurement: capacitive measurement is mainly through the detection of liquid level or bulk material height changes caused by changes in capacitance value to measure the material level height. When the choice must be noted that the capacitance sensor is susceptible to different container materials and solution properties, such as plastic containers and hanging material conditions are likely to affect the analog output of the capacitance sensor. Hydrostatic measurement: Based on the principle that the hydrostatic pressure of the measured liquid is proportional to the height of that liquid, the diffusion silicon sensitive element is used to convert the hydrostatic pressure into an electrical signal, which is then converted into a standard electrical signal after temperature compensation and linear correction. The hydrostatic level transmitter is widely used, and the compact structure and flexible installation provide convenience for users. For product consultation, product customization, agency, technical inquiries, quotations and any other questions, please contact Star Sensor hotline: 400-600-4496 !