IECEX VS ATEX: Navigating global certification standards for Gas sensing
In the specialized field of hazardous area equipment, certification is not merely a legal requirement, it is a guarantee of safety and performance. For instrument manufacturers (OEMs) integrating Gas sensors into their devices, understanding the distinction between IECEx and ATEX is critical for global market access.
What is the IECEx System?
IECEx is the international certification system developed by the International Electrotechnical Commission. It provides a standardized framework for equipment used in explosive (Ex) atmospheres. Unlike regional regulations, IECEx is designed to be a “global passport,” facilitating international trade by ensuring products adhere to the IEC 60079 series of standards.
The Four Pillars of IECEx Certification
- IECEx Certified Equipment Scheme: Governs the hardware components (e.g., NDIR gas sensors).
- IECEx Certified Service Facilities Scheme: Covers repair and maintenance standards.
- IECEx Personnel Competence (CoPC): Validates the expertise of individuals operating in Ex zones.
- IECEx Conformity Mark License: The physical labeling of compliant products.
IECEx vs. ATEX: A Technical Comparison
While both frameworks utilize the same technical standards (IEC/EN 60079), their legal implementation differs. This comparison is vital for European manufacturers targeting non-EU markets.
| Technical Feature | ATEX Directive (Europe) | IECEx System (International) |
|---|---|---|
| Legal Scope | Mandatory for EU/EEA markets. | Voluntary, internationally recognized. |
| Authority | Based on EU Directives (2014/34/EU). | Based on IEC International Standards. |
| Self-Certification | Allowed for Zone 2 (Category 3). | Never allowed; requires third-party ExCB. |
| Verification | No mandatory global database. | Public Online Database for real-time validation. |
The Pathway to Certification: ExTR and QAR
Achieving IECEx compliance requires a rigorous dual-process managed by an Ex Certification Body (ExCB):
- ExTR (Ex Test Report): A technical evaluation where the product (such as a microprocessor-based NDIR sensor) undergoes destructive testing in an ExTL (Ex Test Laboratory) to verify its construction against ignition risks.
- QAR (Quality Assessment Report): A periodic audit of the manufacturing facility based on ISO 80079-34. This ensures that the production line maintains the same safety integrity as the prototype tested in the ExTR.
Why IECEx is Essential for the Oil & Gas Industry
For global players like Shell, Aramco, or BP, IECEx is often a mandatory procurement requirement.
- Simplified Export: Countries like Australia and Brazil accept IECEx directly. In North America (UL/CSA) and China (CCC), an existing ExTR significantly reduces the time and cost of obtaining local marks.
- Elimination of “Shortcuts”: Because IECEx mandates third-party testing even for low-risk zones, it signals a higher level of quality control and reliability to international buyers.
- Anti-Counterfeit Measures: Every valid IECEx certificate is listed on the Official IECEx Portal, allowing global customers to verify authenticity instantly.
As manufacturers of numerous IECEx-certified products, such as our IRNEx PRO NDIR sensors or our NET-certified enclosures.
Our ATEX Quality Assurance Notification (QAN) and IECEx Quality Assessment Reports (QAR) are available for download.
