Side Mount Float Level Switch – Micro Switch
The Side Mount Float Level Switch – Micro Switch is designed for reliable monitoring and control of high, low, or intermediate liquid levels in tanks containing corrosive or non-corrosive liquids. It is widely used for pump control, alarms, valve automation, and level indication applications.
This switch features a rugged construction with a hinged float arm and a non-magnetic housing, ensuring uninterrupted magnetic flux. It employs a dual-magnet system—one mounted on the float arm and another on the switch carrier—to deliver instant and precise switching action through magnetic repulsion. The glandless magnetic coupling also assures leak-proof operation.
Product Share on :Applications
- Pump Control Systems
- Alarm & Safety Level Monitoring
- Valve Automation
- Corrosive & Non-corrosive Liquid Tanks
- Industrial Processing & Utility Tanks
- External Chamber Installations
Working Principle
The switch operates using a dual-magnet repulsion system. As the liquid level changes, the float arm moves and brings the like poles of two magnets close to each other. The resulting repulsive force activates the micro switch inside the enclosure, providing instant SPDT or DPDT contact switching.
Construction
The device consists of a robust hinged float assembly, a non-magnetic switch enclosure, and a leak-proof magnetic coupling. The enclosure is available in weatherproof or flameproof Cast Aluminum, SS304, or SS316. Floats are offered in SS316, PP, or PVDF depending on temperature, pressure, and media compatibility. Long arm, cranked arm, and high-temperature variants are also available.
Installation
- Side or top mounting options
- Available with flanged or threaded process connections
- Suitable for internal mounting or external mounting using chambers
- External chamber allows isolation and easy maintenance
- Ideal for tanks with space limitations or internal mechanical obstructions
Technical Specifications
| Installation Type | Side Mounted / Top Mounted |
|---|---|
| Enclosure Type | Cast Aluminum (Weatherproof / Flameproof) / SS304 / SS316 |
| Float Options |
Ø40 SS316 (SG ≥0.8) Ø50 / Ø60 SS316 (SG ≥0.7) Ø50 PP or PVDF (SG ≥0.8) |
| Process Connection | Flanged & Screwed (BSP / NPT / ASME / Triclover) |
| Repeatability / Accuracy | ±1 mm / ±2 mm |
| Temperature Range |
Standard: -20°C to 70°C (PP), 100°C (PVDF), 120°C (SS) High Temperature: up to 250°C (SS) Very High Temperature: up to 350°C (with radiating fins) |
| Pressure Range | Vacuum to 20 kg/cm² at ambient temperature |
| Switch Type |
Micro Switch SPDT / DPDT Hermetically sealed option available |
Key Features
- Compact & rugged design
- Dual-magnet instantaneous switching
- Leak-proof glandless magnetic coupling
- Available in weatherproof & flameproof models
- Suitable for high-temperature & high-pressure applications
- Multiple float sizes & materials
- Extended and cranked arm options
- Compatible with external chambers
