Which flow meter uses the principle of a rotating paddle?
A. Turbine flow meter
B. Positive displacement flow meter
C. Vortex flow meter
D. Paddlewheel flow meter
Answer:D
Which flow meter uses the principle of a rotating paddle?
A. Turbine flow meter B. Positive displacement flow meter C. Vortex flow meter D. Paddlewheel flow meter
Explanation: The paddlewheel flow meter operates based on the principle of a rotating paddle or wheel that is placed perpendicular to the flow direction. As the fluid passes through the pipe, the paddle is rotated, and the speed of rotation is proportional to the flow rate. The sensor attached to the paddle detects the rotation and provides an output signal proportional to the flow rate.