Explosion-proof cameras for hazardous areas must match three criteria: the area classification (Class/Division or Zone), the gas or dust group (determined by the flammable substance present), and the physical environment (IP rating, material, temperature range). This hub brings together every guide you need to specify, design, install, and maintain compliant hazardous area camera systems.
Start Here: Area Classification
Every camera selection decision starts with the area classification drawing. These guides explain what each classification means and what equipment it requires:
For definitions of key hazardous area terms used in this guide, see the Hazardous Area Classification Glossary.
| Guide | Who Needs It |
|---|---|
| Class 1 Division 1 vs Division 2: Camera Selection Guide | US facilities using NEC classification |
| Intrinsically Safe vs Explosion-Proof Cameras | Anyone evaluating protection methods |
| ATEX Zone 0, Zone 1, Zone 2: Camera Selection Guide | EU and international facilities |
| NEC vs ATEX Hazardous Area Classification: Global Crosswalk | Facilities operating under both US and EU standards |
Equipment Selection Guides
| Guide | Topic |
|---|---|
| Explosion-Proof Camera Housing Selection Guide | Material, size, IP rating, and certification selection for housings |
| Can You Retrofit a Standard Camera Into an Explosion-Proof Housing? | When retrofitting is permitted and how certification is maintained |
System Design and Operations
| Guide | Topic |
|---|---|
| How to Design a Hazardous Area CCTV System | End-to-end system planning: zone mapping, camera selection, wiring, VMS |
| Total Cost of Ownership: Explosion-Proof Security Systems | 5-year cost model comparing hardware, installation, and maintenance |
| Explosion-Proof Camera Maintenance Compliance Checklist | What to inspect and document between formal inspection intervals |
| Post-Installation Certification Audit Guide | How to verify certified assemblies remain compliant after installation |
Industry-Specific Requirements
| Industry | Guide | Key Requirement |
|---|---|---|
| Oil & Gas | Explosion-Proof Cameras for Oil and Gas Refineries | Class I Division 1 Group C&D; T4 or T5 temperature rating |
| Chemical | Chemical Plant Explosion-Proof Camera Requirements | Group C (IIB) often required; 316L stainless for corrosive atmospheres |
| Mining | Mining Explosion-Proof Cameras: Class II Dust Guide | MSHA approval required for US underground mines; IP67+ for water |
| Offshore | Offshore Explosion-Proof Cameras: ATEX Requirements | 316L stainless; IP66 minimum; vibration isolation |
| Pharmaceutical | Pharmaceutical Manufacturing Explosion-Proof Cameras | GMP change control; 316L stainless IP69K for CIP cleaning |
Quick Reference: NEC vs IEC Gas Groups
| NEC Group | IEC Group | Representative Gases | Industries |
|---|---|---|---|
| Group A | IIC | Acetylene | Chemical, specialty gas |
| Group B | IIC | Hydrogen | Chemical (hydrogenation), chlor-alkali |
| Group C | IIB | Ethylene, ethyl ether | Chemical, petrochemical |
| Group D | IIA | Propane, methane, gasoline | Oil and gas, LNG, refinery |
| Group E | IIIC | Metal dusts (aluminum, magnesium) | Metal processing |
| Group F | IIIB | Carbon black, coal dust | Mining, carbon black |
| Group G | IIIA | Grain, flour, wood dust | Agriculture, food processing |
Group C cameras cover both Group C and Group D areas. Group B cameras cover Groups B, C, and D. Always specify for the most demanding group present.
For definitions of key hazardous area terms used in this guide, see the Hazardous Area Classification Glossary.
Browse Certified Products
Browse Veilux’s full range of certified explosion-proof equipment: explosion-proof cameras, camera housings, lighting, and accessories.
Frequently Asked Questions
What certifications do explosion-proof cameras need?
Cameras must carry the certification required for the installation jurisdiction: UL Class I Division 1 (USA), ATEX Zone 1 (EU), or IECEx Zone 1 (international). The gas Group (A/B/C/D or IIC/IIB/IIA) must also match the substance present in each area.
For definitions of key hazardous area terms used in this guide, see the Hazardous Area Classification Glossary.
What is the difference between Class 1 Division 1 and ATEX Zone 1?
Both classify areas with frequently present flammable gas hazards, but they are separate certification systems. Class I Division 1 is the NEC (US) standard; ATEX Zone 1 is the EU/international standard. Equipment must carry the specific certification required for its jurisdiction — a UL-listed camera is not automatically ATEX approved.
For definitions of key hazardous area terms used in this guide, see the Hazardous Area Classification Glossary.
Are explosion-proof cameras the same as intrinsically safe cameras?
No. Explosion-proof cameras contain any internal ignition within the housing. Intrinsically safe cameras limit electrical energy so no ignition can occur. Most surveillance cameras are too power-hungry to be intrinsically safe, making explosion-proof the dominant protection method for camera applications.
For definitions of key hazardous area terms used in this guide, see the Hazardous Area Classification Glossary.