Float switch (level switch) for industrial applications
Short response times and direct contact with the technical team.
Float switches from the manufacturer – precise, durable, and individually configurable
How a float switch works
Float switches vs. other level sensors
| system | benefits | disadvantages |
|---|---|---|
| Float switches | Robust, simple, cost-effective | Mechanical |
| Capacitive sensor | No moving parts | Sensitive to media changes |
| ultrasound | Non-contact | Higher price |
Technical specifications
Plastic float switch
Made from various materials (PP, PE, PA, etc.).
Metal and stainless steel versions
With integrated temperature sensor
Materials & Media Resistance
Water, oils,
Coolants,
Chemical liquids
Food-grade media (depending on the model)
Selection criteria: Which float switch is the right one?
Areas of application for our float switches
Industries
Examples of use
- for reliable empty signaling and dry run protection in sensitive processes.
- for monitoring minimum/maximum levels and for protection against overheating or cavitation.
- in conjunction with suitable materials for drinking water and hygiene-critical media
Contact – Direct & Competent.
Product overview
Detailed technical data for each item is available on request.
We can modify any type to your requirements on request.
- Low space requirement
- Low switching hysteresis
- For thick-walled containers (8-12 mm)
- Reversible switching function
- For temperatures up to 80°C
- Good chemical resistance
- With splash protection
- Screw-in thread 1 1/2″
- For high temperatures
- For aggressive liquids
- Switching function easily reversible
- Suitable for aggressive media
- Lengths from 6 to 200 cm
- Suitable for high temperatures and pressures
- For temperatures up to 130°C
- Good chemical resistance
- For temperatures up to 130°C
- Good chemical resistance
- Suitable for high temperatures (up to 120°C)
- Suitable for high pressure (up to 10 bar)
- Vibration-damped internal structure
- For high temperatures
Frequently asked questions - brief answers
What is a float switch?
This is a fill level sensor that uses a float to detect one or more defined fill levels in liquid containers or tanks and switches an electrical contact (e.g. a pump, alarm transmitter). It can, for example, switch off a pump in good time when the fill level is low, thus preventing dry running, damage and downtimes
How do float switches work?
A magnetic float floats in the liquid and moves along a riser tube with the liquid level. The magnet in the float actuates a reed contact in the riser tube without contact at a defined liquid level. Advantage: very favorable, for many liquids. As the reed contact is switched without contact, there is no mechanical abrasion - ideal for long series running times with minimum maintenance.
What is a plastic float switch suitable for?
For many applications with medium temperatures (up to 80°C) that must be corrosion-resistant and hygienic - e.g. in drinking water technology for water level monitoring. For switching pumps via relays.
How many switching points are possible?
This depends on the size (riser pipe length) of the level switch. Typically, there are up to three switching points per level switch—ideal for minimum, maximum, or intermediate levels.
Can I retrofit the float switches?
Yes, our level switches are mechanically and electrically compatible - even for existing systems.
What installation options are there for float switches?
There are vertical float switches for installation from above in the tanks. Alternatively, there are horizontal level switches for installation from the side in the water tank. With these, care must be taken to ensure that they are screwed tightly so that no liquid leaks out.
How do you connect float switches?
The switch contact of the level switch is connected to your system via a cable or stranded wire. The switch contact is potential-free and is available in various power and voltage classes. The stranded wires are available either stripped, with ferrules, with a plug, or with a special connector—always perfectly suited to your technology.
Are custom-made products possible?
Yes, size, installation position, material, connections, cable length and switching function - everything is tailored to your application. Further accessories for float switches on request.
How does a typical project work?
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Your inquiry with key data on medium, temperature, container and quantities
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Technical coordination directly with our development team
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Prototyping including drawing and documentation
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Testing and release in your system
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Series delivery according to framework agreement or call-off plan
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Where is the float switch located?
The float switch is installed in containers or tanks. It is screwed into the container through an opening.
Can be mounted from above or below, as well as from the side.