Detecting Target Echoes from Uneven Surfaces with Ultrasonic Sensors
Ultrasonic sensors are the preferred choice for a broad range of non-contact distance measuring applications. They are often regarded as the most economical devices for applications like liquid level measurement in tanks.
Ultrasonic sensors are engineered specifically for installation into an NPT threaded hole at the top portion of a tank. These sensors usually lack the ability to detect targets located closer than 4 inches within the face of the transducer.
Several applications present headroom constraints, for example, a drainage tube, where it is preferred to mount a sensor with a thin, small housing that can fit onto the top inner side surface of a container or pipe and quantify the distance to the material inside when it is quite closer than 4 inches within the transducer’s face.