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Paddle wheel |
Paddle flow meter, paddle
wheel flowmeters 
A paddle flowmeter (also known as a paddlewheel flow meter)
uses a very simple method to determine the amount of fluid
flow. This type of sensor has a paddlewheel that is placed
directly in the fluid flow so that it can rotate freely
as the fluid passes it. The faster the fluid flows past
it, the faster the paddle wheel rotates. Each paddle or
web of the paddlewheel has a magnet mounted in it so that
a sinusoidal waveform is produced when it passes the detector
mounted in the head of the sensor. A frequency-to-voltage
converter is used to convert the sine wave signal to a
variable-voltage signal. It should be noted that in order
for a paddle flowmeter to measure properly, it must be
mounted in a straight run of piping. The paddlewheel is
a low-cost sensor used in applications that do not require
a high degree of accuracy.
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Flowmeters Related products |
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