Flow switch is a special electric device with a very simple design and of a small size, as a mechanical switch that is switched on or off in response to the flow or non-flow of a fluid such as air or water. The switch typically operates through the use of a paddle which gets displaced due to the force of fluid moving past it. But despite of its simplicity, flow switch plays important role in the variety of different applications.
Schematic Design of Paddle Flow Switches
As soon as the flow is interrupted, the paddle returns to its original position and the reed switch contact opens/closes depending on the contact type. This change in contact (NO to NC or NC to NO) will be used to indicate the required flow signal output.
This flow switch is produced by teflon plastic material with a long paddle, combats the problems of ...
inexpensive, reliable unit to monitor the presence or absence of flow ...
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