一、产品简介
超声波测距传感器利用声波介质对被检测物进行非接触式和无磨损的检测。超声波传感器对无论是透明性的物体还是有颜色的物体，金属物体或者非金属物体、以及固体、液体或是粉状物质，均能检测。周围环境条件如有烟环境、灰尘环境或是下雨条件下几乎都不会影响超声波传感器的检测性能。
One. Product introduction
By using acoustic media of the tested non-contact and no wear test, Ultrasonic sensors can detect transparency of the object or colored objects, metallic objects or non-metallic objects, as well as solid, liquid or powder material, can detect. Ambient conditions such as smoke, dust environment or under the condition of rain almost does not affect the detection performance of ultrasonic sensor.
二、超声波测距原理
发射超声换能器发射出的超声脉冲，通过传播媒质传播到被测介质，经反射后再通过传声媒质返回到接收换能器，测出超声脉冲从发射到接收在传声媒质中传播的时间。再根据传声媒质中的声速，就可以算得从换能器到介质面的距离。从而确定液位。因此我们可以计算出探头到反射面的距离D ＝ C*t/2(除以2是因为声波从发射到接收实际是一个来回，D是距离，C是声速，t是时间）。
Two. the principle of ultrasonic ranging
Launch of the ultrasonic transducer emit ultrasonic pulse, spread through transmission medium to be measured medium, after reflection by sound transmission medium again returns to the receiving transducer, ultrasonic pulse is measured from the launch to receive in the transmitted time of sound transmission medium. then according to the speed of sound, sound transmission medium can calculate the distance from the transducer to the media. To determine the liquid level. So we can calculate the probe to the reflection surface distance D = C * t / 2 (divided by 2 is because the sound waves from transmitting to receiving actual is a back and forth, D is the distance, C is the velocity of sound, t is the time).
安装注意事项
(1)超声波传感器安装时发射面应垂直于被测物体；
(2)电源线和输出信号线不要接反。
超声波测距传感器英文版说明书下载链接：
