Bidirectional Paddle flow switch use new structure,could monitor the flow by Two-way.It is operate by micro magnetic reed switch,it is normal open,when flowing water push the paddle,the transfer structure change switch condition,it close.This flow switch could be flameproof.
Vane type of flow switch utilizes the flow rate of water to drive the vane to test whether the liquid in pipe flows or not.When the liquid in the pipe does not flow the spring presses the magnet and make vane vertical at this moment,the spring switch has no operation,the contact point is NO state.
When the liquid flows in the pipe/vessel and the flow is big enough to crash the vane higher to 20 to 30 degree,ecentric strap drive abovethe vane push the magnet upward,suction force of magnet make the magnetic switch spring operate,while contact point is connected,the length of vane changes due to daimeter of pipe.
Model No. : BI - FS - 20
M.Pressure : 30 Bar
Medium : Water & oil
Pipe size : DN20~DN200
Operating Temp. : -30°c~150°c
Junction box material : AL Alloy,IP65