Float switch - Engler

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At a glance

Float Switches

Float switches, also known as level or liquid sensors, offer precise monitoring of liquid levels in tanks, containers, and systems. In the world of industrial automation, they have become a proven technology. Whether it’s about preventing overfilling, triggering alarms at low liquid levels, or controlling pumps, our float switches provide a reliable solution.

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Functionality

The operating principle of a float switch based on reed contact relies on using a reed contact as the switching element. A float switch consists of a buoyancy body, also known as a float, which floats on the liquid surface. The buoyancy body is equipped with a magnet.

As the liquid level changes, the buoyancy body moves correspondingly up or down. Upon reaching a specific level, the magnet approaches the reed contact. The reed contact comprises two ferromagnetic contact blades enclosed in a glass capsule. These blades are separated by a small air gap.

When the magnet of the buoyancy body reaches the reed contact, the magnetic field attracts the ferromagnetic blades and brings them together. This closes the contact blades and completes an electrical circuit. This closed circuit can be used to send a signal, such as triggering an alarm or controlling a motor.

Advantages

Precision: Float switches provide accurate detection of liquid levels, enabling precise control and regulation.
Reliability: The robust design and high-quality materials ensure long-term and reliable operation, even in demanding environments.
Easy Installation: Float switches are easy to install and can be seamlessly integrated into existing systems.
Flexibility: A wide range of models and designs are available to meet individual requirements and application conditions.
No Power Supply Required: Float switches are passive devices and therefore do not require a power supply.

Applications

Industrial Automation Technology

In industrial automation, float switches are indispensable for precise monitoring and control of liquids. Whether in cooling systems, hydraulic systems, or the food industry, they ensure smooth operations through exact control and prevent damage. A key application area is pump control: here, float switches monitor the liquid level and automatically switch pumps on or off, improving their efficiency. In the machinery and automotive industries, oil level monitoring ensures smooth operation and optimal lubrication of engines and gearboxes.

Custom Designs and Tailored Solutions

We offer customized float switch solutions precisely tailored to our customers’ individual requirements. Our float switches are specifically developed and manufactured to ensure maximum performance and precision for every application. Whether in industrial plants or machinery, in the food sector such as filling systems, or specialized systems – we adapt our float switches to your specific needs. From material selection to the number of switching points to special mounts and connections, we consider all technical requirements for your optimal solution.

Military Extreme Applications

Float switches are indispensable sensors for liquid level monitoring in the military sector, particularly in vehicles such as tanks, mobile bridges, and mine clearance vehicles. Our high-quality float switches reliably monitor liquid levels in fuel and hydraulic tanks, trigger warnings at critical levels, or control switching operations. These robust float switches enhance the operational safety and readiness of military vehicles by responding early to low liquid levels and preventing malfunctions. With high durability and customized adaptation, they are ideal for extreme military application conditions.

Industries

Float switches are used across numerous industries. In the food industry, for instance, they are employed to monitor liquid levels in storage tanks and filling systems. In the chemical and petrochemical industries, they play a crucial role in safely handling chemicals and preventing overfills. They are also used in water treatment, mechanical engineering, the automotive industry, and many other areas where precise liquid monitoring is essential.