1. Working Principle
Fix one or multiple magnetic reed switches to a closed and nonmagnetic conduit. When the float which is empty inside and fastened with permanent ring magnet approaches the switch along with the conduit under the buoyancy of liquid, the contact would be ON under the function of magnetic force, otherwise, when the float aparts away from the magnetic reed switch, the contact would be OFF. Thus one or multiple signals of ON or OFF would be output and used for alarming or remote control.

2. Technical Specifications
Model: SLH-B
Contact capacity: 220VAC, 70W; Max. 0.5A SPST
Medium Temperature: -10~125 C
Wetted material: SUS304/316L
Float Size: 28*28mm, 45*55mm, 52*52mm, 75*75mm, etc...
Action points: 1, 2, 3, 4...
Process Connection: Flange/screw
Protection Grade: IP65

3. Product Features
A. Adopt imported magnetic switch, simple principle, stable performance
B. Various kinds of connection methods which can meet different needs of various environments

4. Installation Method
A. The interior diameter of the interior screw(or flange tube) D should be wider than that of the float, if the liquid has big fluctuation, please add tube to prevent fluctuation
B. Please keep a distance from the inlet when installing to prevent the float to get stuck by sediments