The EM15-2 Float Switch is a durable and efficient liquid level control device designed for automatic monitoring and pump control in water tanks, sewage systems, wastewater treatment plants, and a wide range of industrial liquid storage applications. It is widely used in modern water management systems where stable performance, long service life, and reliable switching are required.
Built with a robust polypropylene (PP) float body, the EM15-2 ensures consistent operation even in harsh environments. As a mechanical liquid level switch, it does not rely on complex electronic components, making it a cost-effective and highly reliable solution for water level control and pump automation.
Working Principle
The EM15-2 operates based on the principle of buoyancy. When the liquid level rises or falls, the float moves accordingly and activates an internal micro switch. This switching action sends signals to control external equipment such as pumps, alarms, or solenoid valves.
This simple mechanical design provides several advantages:
- Stable and consistent switching performance
- No electronic interference or complex control systems
- Easy installation and wiring
- Low maintenance requirements
- Long operational lifespan in continuous use
Because of its simplicity and reliability, it is widely used in systems that require uninterrupted liquid level monitoring.
PP Float Body for Corrosion Resistance
The float body is manufactured from high-strength polypropylene (PP material), which is well known for its excellent resistance to corrosion, chemicals, and long-term water immersion.
Key benefits include:
- Excellent resistance to sewage and wastewater
- Strong durability in chemical liquid environments
- Lightweight structure for smooth floating movement
- High impact resistance for industrial use
- Stable performance under continuous immersion
This makes the device suitable for both clean water applications and more aggressive wastewater conditions commonly found in industrial environments.
Cable Options and Application Differences
The EM15-2 Float Switch can be equipped with different types of cables depending on installation environment and operational requirements. While the switching mechanism remains the same, cable selection significantly affects flexibility, durability, and environmental resistance.
ELECALL offers EM15-2 Float Switch configurations with the following cable options:
EM15-2 Silicone Cable Float Switch 3*1mm²
EM15-2 Rubber Cable Float Switch 3*1mm²
EM15-2 PVC Cable Float Switch 3*1mm²
EM15-2 PVC Cable Float Switch 3*0.5mm²
Rubber Cable Version
The rubber cable version is designed for demanding industrial environments where movement and mechanical stress are frequent. It provides:
- High flexibility during continuous bending
- Strong resistance to abrasion and mechanical wear
- Excellent resistance to oil, acid, and alkali
- Reliable performance in sewage and wastewater systems
- Long service life under harsh operating conditions
This version is commonly used in pump stations, drainage systems, sewage treatment plants, and outdoor installations where durability is essential.
Silicone Cable Version
The silicone cable version is suitable for environments with extreme temperature variations or chemical exposure. It offers:
- Excellent high and low temperature resistance
- Strong chemical stability
- Superior flexibility in extreme conditions
- Resistance to aging and cracking over time
It is often used in chemical processing systems, high-temperature tanks, and specialized industrial applications.
PVC Cable Version
The PVC cable version is a cost-effective option for general applications where environmental stress is relatively low. It provides:
- Economical and budget-friendly solution
- Good electrical insulation properties
- Basic resistance to moisture and water
- Easy handling and installation
- Suitable for stable, fixed installations
It is commonly used in domestic water tanks, building water supply systems, and general drainage applications.
Wide Application Range
The EM15-2 Float Switch is widely used in a variety of liquid level control systems, including:
- Water storage tanks and reservoirs
- Sewage and wastewater treatment systems
- Sump pump and drainage systems
- Industrial liquid storage tanks
- Chemical liquid handling systems
- Agricultural irrigation systems
- Pump station automation systems
- Flood control and water management systems
Its versatility makes it suitable for both simple and complex automation systems requiring reliable liquid level control.
Installation Flexibility and System Integration
The EM15-2 is designed for easy installation and flexible system integration. Multiple cable length options allow it to adapt to different tank depths and installation requirements. The flexible cable design ensures smooth float movement even in narrow or irregular tank structures.
It can be easily integrated into existing pump control systems, providing automatic start/stop functionality and improving system efficiency.
Conclusion
The EM15-2 Float Switch is a reliable and cost-effective solution for automatic liquid level control in water, wastewater, and industrial applications. Its durable PP float body, stable micro switch mechanism, and flexible cable options ensure long-term performance in a wide range of environments.
Whether used in wastewater treatment plants, industrial automation systems, or water storage applications, this device provides consistent switching performance, low maintenance requirements, and dependable operation over time. It remains a trusted choice for engineers and system designers seeking a durable liquid level control solution.
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