Working Principle
The SHI Series Paddle Type Flow Switch uses the flow of water to drive the blade and detect whether liquid is flowing inside the pipeline. When there is no liquid flow in the pipe, the spring pushes the magnetic plate to make the blade remain vertical. At this time, the magnetic reed switch does not act, and the contact is in the normally open position.
When liquid flows through the pipeline and the flow rate is sufficient to push the blade up by about 20 to 30 degrees, the eccentric transmission plate above the blade pushes the magnet upward. The magnetic attraction then causes the magnetic reed switch to act, and the contact changes to the closed position. Due to different pipe diameters, the blade length should also be adjusted accordingly.
Technical Characteristics
Stable and durable performance.
Immediate response in flow detection.
Water cut-off protection for pipeline systems.
Stainless steel blade for reliable operation.
Technical Parameter
| Signal Output | SPDT |
| Operating Temperature | -20~80°C |
| Working Pressure | 1.0MPa |
| Liquid Material | SUS304, SUS316 |
Typical Application
Air Conditioning Systems
Refrigeration Equipment
Water Cut-Off Protection Applications
Pipeline Liquid Flow Monitoring
Product Type
Product Selectiom Table
