LFS flow switch

LFS Flow Switch: Chemisch Bestendige Doorstroombewaking

The LFS flow switch is specifically designed for environments that require corrosion resistance and chemical inertness. Unlike standard monitors, this series is made of high-grade polypropylene, making it highly suitable for monitoring liquid flows in the chemical industry and when using demineralised water.

Why integrate the LFS series?

In many critical systems, the choice of material determines the service life of the components. The LFS flow switch offers a "set-and-forget" solution with a factory-set switch point. Key fields of application are:

• Demineralised water (DI water): prevents metal contamination in the system.
• Chemical process systems: monitoring of aggressive liquids.
• Laboratory equipment: compact monitoring of liquid circuits.
• Laser and cooling systems: reliable protection against flow loss in demanding environments.

Operation and reliability

The LFS flow switch works on a simple but effective mechanical principle:

1. Flow activation: as soon as the liquid flow rises, an internal magnetic piston is moved by the pressure difference.
2. Contact: this piston activates a hermetically sealed reed switch that is fully moulded into the housing, outside the liquid flow.
3. High flow-through: the design is non-restrictive at higher flows, keeping system efficiency optimal.

Technical specifications LFS series

Installation and engineering support

For optimal operation, the LFS flow switch must be mounted vertically with the inlet port facing down. To maximise service life and prevent contamination of the magnetic piston, the use of a 100 micron filter is recommended.

Do you have questions about the chemical resistance of the LFS series with specific liquids or concentrations? We are happy to think along with you about the right configuration. For more information, also visit the website of our partner ChemTec.