excodex

Free Ex check, no account needed

Is this equipment right for this zone?

Type the Ex marking from the label or drop a photo of it, pick the zone. The answer takes seconds.

  1. 1Marking
  2. 2Zone
  3. 3Result

Zone
Gas
Dust
Gas group
Temperature class

Several areas and equipment

Have an explosion protection document or an Ex equipment register? Drop the file on this page and the areas and equipment are listed for you.

Live gas dispersion model. The lines mark 10%, 50% and 100% of the lower explosive limit. Move your pointer to move the leak.

The open book of explosive atmospheres

Written by the world's experts, approved by majority vote, readable in every language. No company owns it. Its members run it.

II Equipment group II: for all hazardous places except mines endangered by firedamp.

Every certified device carries a line like this. Select each part.

Become a founding member Read the charter
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One subject, every language. Select yours.

Contents

Twelve chapters, open to authors. Each is written by verified experts and goes live only when their peers approve it.

  1. 1How explosive atmospheres formOpen to authors
  2. 2Flammable gases, vapours and mistsOpen to authors
  3. 3Combustible dustsOpen to authors
  4. 4Hazardous area classification and zonesOpen to authors
  5. 5Protection concepts: d, e, i, m, o, p, q, n, tOpen to authors
  6. 6Equipment groups, categories and protection levelsOpen to authors
  7. 7Gas groups and temperature classesOpen to authors
  8. 8Certification: ATEX, IECEx and national schemesOpen to authors
  9. 9Gas detectionOpen to authors
  10. 10Flame detectionOpen to authors
  11. 11Installation, inspection and repairOpen to authors
  12. 12Facilities: oil and gas, chemicals, mining, hydrogen, batteriesOpen to authors

A book with no owner

No editor sits above this book. These rules are its only authority, and members can change them by vote.

  1. Article 1

    Free to read

    Every chapter is free for everyone, everywhere, in every language.

  2. Article 2

    Experts verify experts

    Membership becomes active when ten active members who know you personally write a testimony for you. A field of expertise is confirmed by three verified peers.

  3. Article 3

    Published by majority

    A text is published when ten reviewers approve it within ten days, by majority.

  4. Article 4

    Written once, read everywhere

    Every text is translated into all languages, and native-speaking experts check each translation.

  5. Article 5

    No sponsor, no brand

    No company can buy, edit or brand the content. Advertising disguised as knowledge is rejected in review.

  6. Article 6

    All rights stay with the author

    Every published text is kept at atexmarket.com with all rights reserved in the author's name. Authors and reviewers are named, and every revision is traceable.

  7. Article 7

    Original texts only

    Every text is checked for originality before it reaches reviewers. Texts with a high probability of copying are not published.

  8. Article 8

    Real people, real names

    Every author is a real, identified person, confirmed by ten active members who know their work. Testimonies stay confidential.

  9. Article 9

    Controlled distribution

    Anyone may share a text if they name the author and atexmarket.com as the source. We monitor the web for copies, report them to the author and pursue uncredited use by legal means.

Rules and terms of use

Join the founding circle

The first members shape the rules, the chapters and the review boards. Membership is free.

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Fields of expertise

Optional. Used only for verification, never shown.

Your reference

Name one person who knows your professional work. They receive a single invitation e-mail. Your membership becomes active once ten active members who know you have written a testimony.

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