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Explosion-protected encoders from Leine & Linde

When used in hazardous environments, electronic devices must be handled with special care - even a tiny spark can have fatal consequences.

An explosive atmosphere may occur in many heavy-duty industries where encoders are used to provide position and speed feedback. The energy contained within the encoder circuit must not be allowed to ignite vapors and gases in the environment. The solution is an ATEX-certified encoder, which can be used safely in potentially explosive atmospheres.

ATEX is an acronym for ATmospèhere EXplosible (French, “explosive atmosphere”). It is a commonly-recognized European Union directive that sets out a detailed code for products used in hazardous locations. Leine & Linde’s product range of encoders in their 300, 500, 600 and 800 series now conforms to the ATEX directive for lower Zones (2/22).

The directive states that the construction must protect against penetration of dust in hazardous quantities and guarantee that the surface temperature is below the ignition temperature of dust/air mixtures and below the smoldering temperatures of dust deposits. The construction must minimize the occurrence of arcs, sparks and hot surfaces, which in normal operation might increase the risk of explosion.

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