With the development of China's level measurement technology, more and more level gauges have emerged in the market. These level gauges have their own measurement principles. However, due to the wide variety of level gauges, users will inevitably dazzle their eyes when purchasing. . Shenzhen Jiwei Automation Co., Ltd. Marketing Department engineers specifically for this issue, listed the advantages and disadvantages of each common level gauge comparison, to facilitate everyone to see, compare. First, radio frequency admittance level meter (capacitive level gauge) When the radio frequency admittance level gauge is in use, it is usually opened from the top or side of the container, and its rod-shaped probe is inserted into the hole to realize the change of the reactance (capacitance and impedance) between the probe and the tank body through the probe. Level measurement and control. Advantages: The measured capacitance may be affected by the liquid dielectric constant, conductivity, etc., resulting in errors. Disadvantages: The probe must be immersed in a liquid measurement. It does not apply to pressure, self-agglomerating, corrosive, toxic, flammable explosive liquids. The Cape-11 series radio frequency admittance level switch not only measures liquids, but also measures solid materials, especially for fly ash, solid particles, and adhesive materials. It has extremely high applicability and high reliability. Counts Cape-11 Series RF Admittance Levels Second, radar level gauge Radar level gauges are based on the design principle of high-frequency waveguides and use microwave pulses to emit from the antenna's end through the PTFE emitter. Advantages: Can measure high viscosity liquids, such as mud. Disadvantages: The antenna-type radar level gauge measures the level of the pressure vessel. Because the saturated vapor absorbs electromagnetic waves, there is often a 'missing wave' that does not measure the liquid level. The Rada-21 high-frequency pulse radar level gauge is available with an optional horn antenna with a diameter of less than 40mm, which is especially suitable for the measurement environment of small vessels and smaller waveguides. It also has an automatic false echo suppression function that can be intelligently eliminated. Fixed interference, stable and accurate measurement results. Radar level gauge Third, ultrasonic level gauge Ultrasonic level gauges propagate at the speed of the sound waves, and the time interval from launching to receiving the ultrasonic pulse is proportional to the distance from the transducer to the surface of the measured medium. Advantages: non-contact measurement, high viscosity liquids can be measured. Disadvantages: Gas and dust on the liquid surface absorb ultrasonic waves, causing the transducer to receive less echoes. Counted as the newly launched Uson-11 ultrasonic liquid level gauge with accurate and high-efficiency measurement results, special echo processing method can effectively avoid false echo; and it can be equipped with PVDF material probe for measurement in strong corrosive liquids. Temperature compensation, high precision and strong adaptability. Ultrasonic level gauge Fourth, magnetic flap level gauge Measuring principle: Real-time measurement and display of the liquid level based on the principle of the communicator and magnetic Coupling. Advantages: intuitive readings. Disadvantages: After a certain period of time, the pontoon is prone to stuck. The Flap-11 series magnetic flap liquid level meter, which is counted as independent research and production, adopts the latest glass panel technology. It has a small blind area for measurement, a large viewing angle of the indicator, and dual explosion-proof certification for flameproof and intrinsically safe. The Flap-11P-lined magnetic flap level gauge buoy uses 304-lined PTFE, which not only eliminates stuck buoys, but can also be applied to highly corrosive liquids. Count as Flap-11 series magnetic flap The above is related to the "comparison of advantages and disadvantages of common level gauges." For more information on level switches, level switches, and level gauges, please pay attention to WeChat public number: Jiweimeter. (The article is taken from:, please indicate the source.) Optoelectronic Information Series Photoelectric information series laboratory related equipment Optoelectronic Information Product,Optical Bench Experiments Physics,Optical Devices Physics,Optical Physics Properties Yuheng Optics Co., Ltd.(Changchun) , https://www.yuhengcoder.com
