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LOF Overfill Prevention

LOF with LOF 500

Fibre-optic Overfill Prevention

The overfill prevention is a safety device designed to prevent the overfilling of tanks and process containers. In the handling of water-polluting liquids, this  fibre optic sensor it is an indispensable component for environmental protection.

The fibre-optic overfill LOF for zone 0 consists in a level detector type LOF and a transducer with alarm system and output terminal type LOF 500.
Advantages of FAFNIR's Technology:

Completely maintenance-free

Sturdy design without moving parts


Independent of pressure, temperature, density and conductivity

Ease of handling

Easily adjustable for various tank sizes

Information Sheet

LOF mit LOF 500
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