The series 5 flow switches are based on a common set of parts and principle of operation. Pressure differential across a movable magnetic poppet operates a reed switch moulded into the body of the flow switch.
The flow switches are designed for use in low flow applications (under 3.8 Ltrs/min), they can be used in by-pass lines so flow can be sampled and sensed without impeding flow efficiency. As an "in the flow stream" sensor the flow switches are only limited by the I.D. of their internal port diameter.
Monitoring coolant flow, activating equipment at flow turn on, detecting flow in spray/sprinkler systems are excellent applications for this product.