ETG S.r.l products

The ETG Clamp On is a device that measures the water flow rate in a pipeline based on the principle of the difference of transit time of an ultrasonic pulse. An acoustic (ultrasonic) signal is transmitted in both directions by one sensor to the other. The propagation velocity of the acoustic waves in the flow direction is greater than that in the opposite direction and, as a result, a difference in transit time proportionate to the flow velocity is calculated.