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An ultrasonic level gauge is a digital level measuring instrument controlled by a microprocessor. It features high accuracy, good sensitivity, flexible operation, and high reliability, making it suitable for various corrosive environments. 1. Impact of stirring on ultrasonic level gauges: In containers in use, stirring often occurs, resulting in significant fluid fluctuations that affect the measurement accuracy of ultrasonic level gauges. In such cases, it is possible to reduce the speed of the stirrer or position the probe away from the center of stirring. Additionally, a static tube can be installed to effectively eliminate the impact of stirring on level measurement. 2. Impact of foam on ultrasonic level gauges: When using ultrasonic level gauges to measure liquid levels, interference from foam is a common issue. Foams can be classified into four types based on their properties: dry, wet, neutral, and heavy. Dry and wet foam can reflect ultrasonic waves back, so using an ultrasonic level gauge to make measurements is not affected by this. Neutral foam, on the other hand, absorbs and scatters some of the ultrasonic waves, which reduces the reflection of these waves and results in unstable echoes. Therefore, when the surface of the medium is covered with thick and dense foam, the measurement error of the ultrasonic level gauge becomes large, or it may even be unable to take measurements. In conditions with severe interference, the American FLOWLINE ultrasonic level gauge can mitigate the impact of foam by installing a static tube. This is an exclusive patented technology of Beijing Conason Company. 3. Impact of steam and mist on ultrasonic level gauges: When the temperature in the operating environment is very high, the liquid medium tends to produce steam or mist. Since steam is lighter than air, it rises to the top of the tank, forming a layer of steam that absorbs and scatters ultrasonic pulses. By installing static tubes, the impact of the steam layer on measurements can be reduced or minimized. 4. Impact of the blind zone on ultrasonic level gauges: The blind zone of an ultrasonic level gauge is similar to that of the human eye; it occurs when an object is too close to the sensor, making it impossible to see clearly – this distance is known as the blind zone. The blind zone of ultrasonic level gauges varies depending on the range. A smaller range results in a smaller blind spot, while a larger range leads to a larger blind spot. Therefore, the maximum liquid level to be measured must not be higher than the blind zone of the ultrasonic level gauge. 5. Influence of pressure and temperature on ultrasonic level gauges: First of all, the speed of sound cannot propagate in a vacuum, and since ultrasonic waves are a type of sound wave and belong to mechanical waves, they also cannot travel in a vacuum. Secondly, there is temperature. Although the parameter summary for ultrasonic level gauges includes a maximum pressure value, this value decreases as the temperature rises; therefore, this parameter needs to be taken into consideration when selecting a gauge. Furthermore, for level gauges installed outdoors, measures such as installing sunshades can be taken to reduce the impact of temperature factors. Principles for installing ultrasonic level gauges: 1) The distance from the transmitting surface of the probe to the lowest liquid level should be less than the range of the gauge purchased. 2) The distance from the probe’s transmitting surface to the highest liquid level should be greater than the blind zone of the instrument selected. 3) The emitting surface of the probe should remain parallel to the liquid surface. 4) The installation location of the probe should avoid areas where the liquid level fluctuates severely, such as directly below the inlet and outlet ports. 5) If the wall of the tank or vessel is not smooth, the instrument should be installed at a distance of more than 0.3 m from the wall. 6) If the distance from the probe’s emitting surface to the highest liquid level is less than the blind zone of the selected instrument, an extension tube must be installed. The diameter of this extension tube should be greater than 120 mm, and its length should range from 0.35 m to 0.50 m; it must be installed vertically, with a smooth inner surface. The hole made in the tank should be larger than the inner diameter of the extension tube. Alternatively, the pipe can be led to the bottom of the tank, with a diameter greater than 80 mm; a hole should be left at the bottom of the pipe to keep the liquid level in the extension pipe at the same height as that in the tank. Precautions for installing ultrasonic level gauges: 1) When installing the gauge outdoors, it is recommended to use a sunshade to extend its service life. 2) For wire and cable protection tubes, pay attention to sealing to prevent water accumulation. 3) Although the instrument is equipped with its own lightning protection devices, when it is used in areas with frequent lightning strikes, it is recommended to install separate dedicated lightning protection systems at the inlet and outlet ends of the instrument. 4) When the instrument is used in extremely hot or cold environments, where the ambient temperature may exceed the operating requirements of the instrument, it is recommended to install devices to protect against high and low temperatures around the level gauge. For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content!