⚙️ Not everything needs an EX sign - but many things require attention
There are often uncertainties when dealing with potentially explosive atmospheres: Does every tool have to be ATEX-certified? And what do you need a test number for? In this article, we clarify the certification issues - especially for beginners.
✅ These things require an ATEX certification
According to the ATEX Directive 2014/34/EU, all devices must be certified that:
contain a potential ignition source and
can be used in potentially explosive atmospheres.
These include, for example:
Electrical devices (e.g. lights, sensors, controls)
Motors, pumps, fans
Pneumatic or hydraulic devices with rotating parts
Explosion-proof enclosures, terminal boxes, switches
These products must:
undergo a conformity assessment
bear an ATEX mark (e.g. "II 2G Ex db IIC T6 Gb")
receive a certificate from a notified body, if applicable
❌ These things are not ATEX certified
Some products are not subject to the ATEX directive, even though they are used in Ex zones:
- Hand tools (e.g. hammer, screwdriver)
- Standard mechanical components, provided they are not a source of ignition (e.g. screws, terminals)
- Work clothing, unless it is electrically heated
- Construction materials such as tiles, concrete, insulation
Important: Not certifiable does not automatically mean that it is not dangerous!
For tools, for example, attention must be paid to non-sparking materials such as BeCu or Al bronze.
⚠️ Special Case: Air-Operated Devices
Compressor air devices do not generate electrical sparks - so they do not seem critical at first. But they are:
- Mechanical friction can cause hot surfaces or sparks
- Electrostatic charging is possible
- Explosion protection is not automatically provided
➡️ Conclusion: Compressed air devices must also be tested - ATEX marking is only possible after a complete analysis of the ignition sources.
🧾 What You Should Check
- Does the product have an ATEX marking?
- Is there a certificate or a declaration of conformity?
- Is an analysis of the ignition source available?
- Does the marking correspond to the intended zone (e.g. 2G, 1D)?
📦 Example: Toolbox in a hazardous area
| Product | Is ATEX marking required? | What should you look out for? |
|---|---|---|
| Flashlight | ✅ I | Ex zone, temperature class, manufacturer information |
| Hand hammer (made of steel) | ❌ No | ❗ Sparks flying - not suitable! |
| Hammer from BeCu | ❌ No | Low sparking, suitable for hazardous areas |
| Pneumatic impact wrench | ✅ I | 🔍 Test according to ISO 80079-36 / Manufacturer's specification |
🧯 Conclusion
ATEX is more than just a sticker.
Not every product needs a certificate - but every product needs an assessment. For operators, this means remaining vigilant, asking critical questions and always consulting experts when in doubt.