Mini Float Level Switch

Overview of Mini Float Level Switch 

The working principle of the Mini Float Level Switch is straightforward. A sealed stem contains one or more magnetic reed switches at specific heights. A hollow float, containing an annular permanent magnet, slides up and down the stem as the liquid level changes. When the float’s internal magnet aligns with the reed switch, the magnetic field forces the switch contacts to open or close, generating a signal to control pumps, alarms, or indicators. The "Normally Open" or "Normally Closed" status refers to the state of the switch when no liquid is present (the dry state).

Features of Mini Float Level Switch

• Simple and Reliable Design: No complex linkages or power requirements for the sensing element, reducing the risk of mechanical failure.

• Multi-Point Control: A single stem can be customized with multiple reed switches to monitor several level points (e.g., low-level alarm and high-level stop).

• Material Versatility: Available in PP (Polypropylene) for general water and light chemical use, or Stainless Steel for high-temperature and high-pressure environments.

• Compact Footprint: Small diameter and short stem lengths allow for installation in tight spaces where traditional float switches cannot fit.

• High Compatibility: Reed switches are hermetically sealed, protecting them from oxidation and corrosion by the process media.

• Customizable Status: Switch logic can easily be reversed by flipping the float 180 degrees on the stem.

Applications of Mini Float Level Switch

• Household Appliances: Water level control in coffee makers, water dispensers, humidifiers, and dishwashers.

• Automotive and Transport: Monitoring fuel, oil, and coolant levels in vehicle reservoirs.

• Industrial Equipment: Level sensing in small lubrication tanks, cooling systems, and hydraulic reservoirs.

• Water Treatment: Sump pump control and overflow protection in small-scale filtration units.

• Chemical Processing: Monitoring reagent levels in laboratory equipment and chemical dosing systems.

• Medical Devices: Fluid management in clinical analyzers and sterilization equipment.

Price of Mini Float Level Switch 

The price of the Mini Float Level Switch is highly competitive due to its simple mechanical nature. Costs vary based on the choice of material (PP vs. Stainless Steel), the number of switching points required, and the total length of the stem. Specialized high-temperature or high-pressure versions are available upon request for a slightly higher investment. For bulk pricing or a specific quotation for your equipment design, please contact the ZINACA team.

OEM Service 

ZINACA offers comprehensive OEM customization for mini float switches:

• Custom Stem Lengths: Manufacturing stems to the exact depth of your tank, from a few centimeters to over a meter.

• Custom Switching Points: Precision placement of multiple reed switches to match your system’s control logic.

• Material Selection: Offering various plastics (PP, PVDF, NBR) and stainless steel grades (304, 316L) to suit specific chemical compatibilities.

• Connection Types: Custom thread sizes (M8, M10, G1/8, etc.) and lead wire lengths/connectors to integrate seamlessly into your production line.

• Private Labeling: Branding options for high-volume orders, including custom part numbers and logos.