H. Kuhnke Ltd, Romsey, UK
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ATEX

The ATEX directive, known as Directive 94/9/EC supercedes all previous regulations in Europe applying to the use of components and systems where potentially explosive conditions may occur. This relates to the dangers of both dust (grain, tobacco etc) and gas, from causes of ignition such as high temperature, spark and arc. European standards EN 50014 and EN 50018 now apply. Equipment which is to be used in a potentially explosive environment (or which may be associated with the function of the same) has to be certified by an independent body, and labelled for the "level" of safe operation (gas, dust etc) using a code. For more details visit this link: http://europa.eu.int/comm/enterprise/atex/

Electrical & Electronic Timers & Encoders

Because these devices operate electrically they are not intrinsically safe by design and require individual product certification.

Hengster Encoders with ATEX Approval

Two incremental and absolute encoders are available with ATEX certification. See the AX70/71 explosion proof absolute shaft encoder and the RX70/71 explosion proof incremental shaft encoder in the products section of this site.

 

It is the ultimate responsibility of all systems builders to ensure that the total package / assembly / system complies with Directive 94/9/C as may be applicable. If in doubt please contact us directly with details of your application and the products you are considering using.

A typical certification code will define a device group, a category, a definition of suitability for gases or dusts, a geographical specification code, an explosion proof category, a gas group where applicable, a temperature code and possibly an IP rating. For an example of these codes please download the datasheet for the Hengstler ATEX Explosion Proof Absolute Shaft Encoder Type AX70/71(171Kb PDF)