How to choose intrinsically safe devices

Selecting the right intrinsically safe device is critical for safety in hazardous environments. However, many professionals make costly mistakes that can compromise workplace safety and regulatory compliance. In this guide, we’ll discuss the most common errors and how to avoid them to ensure you choose the best intrinsically safe equipment for your needs.

Ignoring Certification Standards

Mistake:

Many buyers assume that all devices labeled “intrinsically safe” meet the necessary certification standards for their industry.

Solution:

Ensure the device is certified by recognized regulatory bodies such as:

  • ATEX (Europe) – Required for devices used in explosive atmospheres.
  • IECEx (International) – A globally accepted standard.
  • UL (United States) – Certifies devices for hazardous locations in North America.
  • CSA (Canada) – Ensures compliance with Canadian safety standards.

Key Takeaway: Check the product label and official certification documents before purchasing.

Choosing the Wrong Device for the Hazardous Zone

Mistake:

Different hazardous zones require different levels of protection, yet some users purchase devices without verifying their suitability.

Solution:

Understand explosive zone classifications:

  • Zone 0: Continuous presence of explosive gases (requires the highest safety rating).
  • Zone 1: Occasional presence of hazardous gases.
  • Zone 2: Explosive gases are rare and only present for short durations.

For combustible dust environments, ensure compliance with:

  • Zone 20, 21, 22 for explosive dust atmospheres.

Key Takeaway: Match the device’s certification to the correct zone for your workplace.

Overlooking Environmental Considerations

Mistake:

Buying intrinsically safe devices without considering temperature, humidity, and corrosive exposure.

Solution:

Evaluate environmental conditions before choosing a device:

  • Temperature ratings – Ensure the device can operate safely within the ambient temperature range.
  • Ingress Protection (IP) rating – Protects against dust and moisture ingress.
  • Corrosion resistance – Required for chemical plants or offshore environments.

Key Takeaway: Select devices designed for extreme conditions if necessary.

Neglecting Battery and Power Source Safety

Mistake:

Assuming all batteries used in intrinsically safe devices meet safety requirements.

Solution:

  • Use only manufacturer-approved batteries and power sources.
  • Ensure the battery has intrinsic safety approval and does not exceed allowed energy limits.
  • Check whether hot-swappable batteries are permitted in hazardous areas.

Key Takeaway: Incorrect batteries can introduce a risk of ignition.

Failing to Consider Long-Term Maintenance and Compliance

Mistake:

Buying a device without understanding maintenance requirements and certification renewal processes.

Solution:

  • Regular inspections and recertifications are necessary.
  • Verify if spare parts and servicing are easily available.
  • Train staff to handle intrinsically safe equipment properly.

Key Takeaway: Plan for long-term compliance to avoid safety violations.

Purchasing Based on Price Instead of Safety and Reliability

Mistake:

Opting for the cheapest intrinsically safe device without considering performance and durability.

Solution:

  • Look for trusted brands with proven reliability in hazardous environments.
  • Consider the total cost of ownership (including maintenance and certifications).
  • Read customer reviews and safety reports.

Key Takeaway: A low-cost device might lack essential safety features.

Not Verifying Compatibility with Existing Equipment

Mistake:

Buying intrinsically safe devices that do not integrate with other safety systems.

Solution:

  • Ensure connectivity compatibility (Wi-Fi, Bluetooth, wired connections).
  • Confirm compliance with other safety systems in use (e.g., gas detection, explosion-proof enclosures).
  • Check certification alignment with existing equipment.

Key Takeaway: Devices should work seamlessly with your current safety infrastructure.

Conclusion

Choosing the right intrinsically safe device is not just about compliance—it’s about ensuring the safety of personnel and the integrity of your operations. Avoid these common mistakes and make informed decisions by:

  • Checking for proper certification
  • Selecting the right hazardous zone rating
  • Considering environmental and battery safety
  • Prioritizing long-term compliance
  • Investing in quality over price

Need Help Choosing the Right Intrinsically Safe Device?
Explore our certified intrinsically safe products at Intrinsically Safe Store and make safety your top priority today!

Frequently Asked Questions (FAQs)

What does “intrinsically safe” mean?

Intrinsically safe (IS) equipment is designed to operate in hazardous environments without causing ignition, even in the presence of flammable gases, vapors, or dust.

How do I know if a device is truly intrinsically safe?

A: Look for certifications like ATEX, IECEx, UL, or CSA on the product label and verify with the manufacturer.

Can intrinsically safe devices be used in all hazardous zones?

No. Devices must be rated for the specific explosive zone classification of your workplace.

What’s the difference between explosion-proof and intrinsically safe?

Intrinsically safe devices prevent ignition by limiting electrical energy, while explosion-proof enclosures contain and isolate potential explosions.

Why is battery selection important for intrinsically safe devices?

Non-approved batteries can exceed safe energy limits and pose an ignition risk in hazardous areas.