High accuracy ultrasonic flow meter calibration

Ultrasonic flowmeter probe to use for some time, there will be occasional alarm. Especially when the transmission medium impurities are more, this problem will be more common. Solution: Clean the probe periodically (recommended one year clean-up).

Portable Ultrasonic Flow Meter :https://www.kunlunsensors.com/productpage.php?pid=101

handheld ultrasonic flow meter :https://www.youtube.com/watch?v=lc3UQMjPm20