超声波液位计工作时，高频脉冲声波由换能器（探头）发出，遇被测物体（水面）表面被反射，折回的反射回波被同一换能器（探头）接收，转换成电信号。脉冲发送和接收之间的时间（声波的运动时间）与换能器到物体表面的距离成正比，声波传输的距离S与声速C和传输时间T之间的关系可以用公式表示：S= CⅩT/2
When the ultrasonic level gauge is working, high-frequency pulse sound waves are emitted by the transducer (probe). When encountering the surface of the measured object (water surface), they are reflected, and the reflected echoes are received by the same transducer (probe) and converted into electrical signals. The time between pulse transmission and reception (the motion time of sound waves) is directly proportional to the distance from the transducer to the surface of the object. The relationship between the distance S of sound wave transmission, the sound speed C, and the transmission time T can be expressed by the formula: S=CXT/2
安装超声波液位计时必须考虑超声波液位计的盲区问题。当液位进入盲区后，超声波变送器就无法测量液位了，所以在确定超声波液位计的量程时，必须留出50公分的余量，安装时，变送器探头必须高出最高液位50公分左右。这样才能保证对液位的准确监测及保证超声波液位计的安全。
The blind spot issue of the ultrasonic level gauge must be considered when installing it. When the liquid level enters the blind zone, the ultrasonic transmitter cannot measure the liquid level. Therefore, when determining the range of the ultrasonic level gauge, a margin of 50 centimeters must be left. When installing, the transmitter probe must be about 50 centimeters higher than the highest liquid level. This can ensure accurate monitoring of the liquid level and ensure the safety of the ultrasonic level gauge.
在实际使用中，因为安装时考虑不周，液位计被水淹没，致使液位计完全损坏。
In practical use, due to inadequate installation considerations, the liquid level gauge was submerged in water, resulting in complete damage to the gauge.
价格低，体积小，重量轻，可用于食品，化工，半导体等行业对液体和散装固体非接解式物位测量，可用于远程物位监控和泵的控制
Low price, small size, light weight, can be used for non-contact level measurement of liquids and bulk solids in industries such as food, chemical, and semiconductor. It can be used for remote level monitoring and pump control
机械安装时应注意：安装应垂直于测是物表面，避免用于测量泡沫性质物体，避免安装于距测量物体表面距离小于盲区距离（盲区：每台产品会有一个标准，随产品得知），应考虑束避开阴挡物质不与灌口和容器壁相遇，检测大块固体物应调整探头方位，减少测量误差
During mechanical installation, attention should be paid to: the installation should be perpendicular to the surface of the object to be measured to avoid measuring objects with foam properties, and the installation should not be less than the blind area distance from the surface of the object to be measured (blind area: each product will have a standard, which will be known with the product). The beam should be considered to avoid the barrier material and not meet the tank mouth and container wall. When detecting large solids, the probe should be adjusted to reduce the measurement error