rs485 output integrated ultrasonic level meter ultrasonic water level gauge range 10m /24vdc power supply lowest factory price

the blind zone is the distance that the ultrasonic level gauge cannot measure. when the ultrasonic level gauge is in use, the reflected echo cannot be detected at the same time. since the transmitted ultrasonic pulse has a certain time width, and the sensor still has residual vibration after the ultrasonic wave is emitted, the reflected echo cannot be detected during the period, and a small distance from the surface of the probe cannot be detected. this distance is called a blind zone.