ATEX Zone 1 equipment plays a critical role in industries where explosive atmospheres are a risk. From oil rigs and chemical plants to grain silos and wastewater facilities, the need for compliant, explosion-proof devices is not just about safety—it’s also about regulatory compliance and operational continuity.
In this guide, we’ll break down what ATEX zones are, the specific requirements for Zone 1, and why using the right certified equipment matters. We’ll also explore examples of ATEX Zone 1 gear, when and where it’s needed, and how to make informed purchasing decisions.
Want a quick overview of what ATEX certification really means?
Read our guide to ATEX vs IECEx certifications
What Are ATEX Zones and How Do They Differ?
ATEX (short for “Atmosphères Explosibles”) is a European directive that classifies areas where explosive atmospheres may occur. These areas are divided into zones based on the frequency and duration of the presence of flammable gases or dusts.
ATEX Zone Classifications for Gases
| Zone | Definition | Typical Environment |
|---|
| Zone 0 | Constant or long-term presence of explosive gases | Inside fuel tanks, reactor vessels |
| Zone 1 | Likely presence of explosive gases during normal operation | Around pump seals, process valves |
| Zone 2 | Rare presence of explosive gases, only for short periods | Ventilation ducts, storage areas |
For dust environments, similar classifications exist (Zone 20, 21, 22), but this article focuses on gaseous hazards and ATEX Zone 1 equipment.
What Is ATEX Zone 1 Equipment?
ATEX Zone 1 equipment is specifically designed and certified to operate safely in environments where an explosive atmosphere is likely to occur during normal operations.
This type of equipment must meet strict standards for explosion protection. It is tested for features such as:
Intrinsic safety (no sparks or heat sources)
Enclosure integrity (IP-rated for dust and gas ingress)
Material composition (resistance to corrosion and impact)
Certification under ATEX Directive 2014/34/EU
Certification Marking Example
A device certified for ATEX Zone 1 might have a marking like:
II 2G Ex ib IIC T4 Gb
Where:
II: Non-mining equipment
2G: Zone 1 gas protection
Ex ib: Intrinsic safety type ‘ib’
IIC: Suitable for hydrogen, the most explosive gas group
T4: Maximum surface temperature ≤ 135°C
Gb: Equipment protection level
What Are Examples of ATEX Zone 1 Certified Devices?
Several categories of equipment can be certified for ATEX Zone 1. Here are some common types available at Intrinsically Safe Store:
| Device | Certification | Key Features | Use Cases |
|---|
| Ecom Smart-Ex 02 | ATEX Zone 1 | Intrinsically safe smartphone, 4G/LTE, Gorilla Glass | Field communication, digital inspections |
| i.safe MOBILE IS320.1 | ATEX Zone 1 | Rugged push-to-talk device, IP68, glove-friendly | Petrochemical sites, refineries |
| CorDEX ToughPIX DIGITHERM | ATEX Zone 1 | Intrinsically safe thermal imaging camera | Fault detection, predictive maintenance |
| Exloc Gamber-Johnson Tablet Mounts | ATEX-compatible | Mounting hardware for ATEX Zone 1 tablets | In-vehicle installations |
Looking for certified ATEX Zone 1 tools and devices?
Explore our full selection of ATEX Zone 1 equipment
Best Choice for Each Use Case:
Field Communications: Ecom Smart-Ex 02
Entry-Level Comms: i.safe MOBILE IS320.1
Diagnostics & Maintenance: CorDEX ToughPIX DIGITHERM
Vehicle Installations: Gamber-Johnson Mounting Solutions
When Do You Need ATEX Zone 1 Compliance?
What Triggers the Need for ATEX Zone 1 Equipment?
You are required to use ATEX Zone 1 equipment when operations occur in an area where explosive gas atmospheres are likely to be present during normal operation.
Common triggers include:
Handling or transferring flammable gases or vapors
Presence of pressurized systems with volatile chemicals
Poor ventilation in process areas
Maintenance in confined hazardous spaces
Where Is ATEX Zone 1 Commonly Found?
Industries and locations that frequently require Zone 1 compliance include:
Oil & Gas: Offshore platforms, drilling rigs, compressor stations
Chemical Processing: Mixing tanks, reaction vessels
Mining: Surface and underground operations with methane pockets
Pharmaceuticals: Solvent-based production lines
Food & Beverage: Facilities with ethanol or flavoring solvents
Utilities: Wastewater treatment plants
Always refer to your facility’s hazardous area classification report for zoning details.
What Should You Consider When Buying ATEX Zone 1 Equipment?
1. Certification Validity
Make sure the product has up-to-date certification from a Notified Body. Look for CE marking and ATEX certification labels on the device and manual.
2. Compatibility With Your Zone Classification
Double-check if you’re dealing with gas (Zone 1) or dust (Zone 21). Some devices are certified for multiple zones but not all.
3. Temperature Class
Ensure the temperature class (e.g., T4, T5) fits the type of explosive gases present in your environment. T4 is commonly accepted for many gas groups.
4. Ingress Protection (IP) Rating
An IP rating of IP65 or higher is ideal for harsh environments where dust or water exposure is a concern.
5. Functionality and Use Case Fit
Avoid overbuying. Match device functionality with operational needs:
Smartphones/tablets: For mobile fieldwork and inspections
Cameras: For maintenance diagnostics
Radios: For team communication
Mounts/accessories: For secure deployment in vehicles or field stations
Need ATEX Zone 1 Gear? Talk to an expert or download our free ATEX guide now.
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Why Is ATEX Zone 1 Equipment Important?
Using ATEX Zone 1 equipment is not optional in regulated industries—it’s a matter of legal compliance, safety, and efficiency. The key reasons include:
Explosion Prevention: Prevents ignition of flammable gases.
Compliance: Meets legal requirements under ATEX and IECEx standards.
Worker Safety: Protects personnel in high-risk environments.
Insurance Requirements: Insurers may require certified gear to underwrite industrial operations.
Operational Uptime: Prevents costly shutdowns and penalties from regulatory bodies.
Frequently Asked Questions About ATEX Zone 1 Equipment
What Is the Difference Between Zone 1 and Zone 2?
Zone 1 refers to areas where explosive gases are likely during normal operations, while Zone 2 areas only occasionallyexperience these conditions. Zone 1 equipment must meet stricter safety standards.
Can ATEX Zone 1 Equipment Be Used in Zone 2?
Yes, but not the reverse. Zone 1 equipment can be safely deployed in Zone 2 areas, offering higher safety margins.
What Happens If I Use Non-Certified Equipment in Zone 1?
Using uncertified equipment in ATEX Zone 1 can result in legal fines, invalid insurance, and increased risk of explosions—potentially causing injury or death.
Is ATEX the Same as IECEx?
Both certify equipment for explosive atmospheres, but ATEX is required in the EU, while IECEx is internationally recognized. Many devices carry dual certifications.
How Often Should ATEX Equipment Be Inspected?
Regular inspections are critical. Follow manufacturer guidance, but typically every 6–12 months, depending on usage and environment severity.
Make ATEX Zone 1 Safety a Priority
ATEX Zone 1 equipment is essential for ensuring safety and compliance in environments with explosive gas risks. From communication to diagnostics, selecting the right certified gear prevents incidents and meets regulatory standards.
Whether you’re outfitting a refinery, offshore rig, or utility facility, Intrinsically Safe Store offers a wide selection of ATEX Zone 1 equipment backed by industry certifications and expert support.
