L4 Series Explosion Proof Housing for Keyence IV3–IV4

The APG Vision L4 Series Explosion Proof Housing is engineered to safely integrate Keyence IV3 and IV4 vision sensors into hazardous locations where flammable gases or vapors may be present. Designed for demanding industrial environments, this enclosure allows advanced machine vision inspection while maintaining strict explosion-proof compliance.

Built with rugged industrial construction, the L4 Series protects sensitive vision equipment from ignition risks, dust, moisture, and harsh operating conditions. It enables continuous, reliable inspection in oil & gas facilities, chemical plants, refineries, and manufacturing sites where safety, uptime, and accuracy are critical.

This page serves as the definitive technical resource for protecting your Keyence IV3/IV4 sensors in hazardous locations. We provide not just a product, but a complete solution guide, covering key features, global certifications, and specific application integration to ensure your vision systems operate safely and effectively in classified areas.

Key Features:

• ✅ Explosion-proof design for hazardous area deployment
• ✅ Compatible with Keyence IV3 and IV4 vision systems
• ✅ Heavy-duty industrial housing for long-term field use
• ✅ Protects against dust, moisture, and harsh environments
• ✅ Precision mounting and optical alignment support
• ✅ Designed for continuous operation in critical processes
• ✅ Robust Material Construction: Fabricated from durable alloys to resist corrosion and physical impact, ensuring integrity in challenging plant conditions.
• ✅ High-Clarity Viewing Window: Tempered soda-lime float glass viewport, impact tested to UL standards for hazardous locations, maintaining optical integrity for accurate inspections.
• ✅ Simplified Integration: Includes all necessary ports and glands for secure cable entry, simplifying the connection of the Keyence sensor to your control system.

Package Options:

• 🔹 Housing only for customer-supplied Keyence IV3/IV4 sensor

Specifications:

Feature	Details
Product Type	Explosion Proof Vision System Housing
Compatibility	Keyence IV3, Keyence IV4
Application Area	Hazardous Locations
Protection	Explosion-proof industrial enclosure
Mounting	Fixed industrial mounting
Construction	Heavy-duty industrial materials
Use Case	Vision inspection in hazardous areas

What's in the Box?

• 📦 1x L4 Series Explosion Proof Housing
• 📦 Mounting Hardware
• 📦 Installation Documentation

Certifications & Compliance:

• 🔗 Explosion-Proof Certification – Suitable for hazardous gas environments
• 🔗 Industrial Compliance – Designed for harsh industrial installations
• 🔗 Environmental Protection – Guards against dust and moisture ingress
• 🔗 ATEX Certified: Meets the essential health and safety requirements for equipment used in explosive atmospheres within the European Union.
• 🔗 UL/cUL Class I, Division 1, Group B: Certified for North American hazardous locations where hydrogen or other Group B gases may be present under normal operating conditions.
• 🔗 NEMA Types 4X/7/9: Enclosure rated for outdoor use, protection against corrosion, and explosion-proof performance in Class I locations.
• 🔗 Glass Impact Tested: Viewport tested to UL standards for hazardous locations.
• 🔗 Download Datasheet

Applications:

• 🔹 Oil & Gas Facilities
• 🔹 Chemical Processing Plants
• 🔹 Refineries
• 🔹 Manufacturing & Automation
• 🔹 Hazardous Area Inspection Systems

Typical Installation and Use Cases:

In these environments, the L4 housing enables the Keyence sensor to perform critical tasks such as:

• Automated Quality Control: Verifying product assembly, checking fill levels, and reading barcodes or batch codes in areas with flammable vapors or dust.
• Process Monitoring: Observing machinery, confirming valve positions, or monitoring flow indicators where direct human observation is unsafe.
• Asset Integrity Checks: Inspecting for corrosion, leaks, or damage on critical equipment within a classified zone.

Installation is straightforward: the Keyence IV3 or IV4 sensor mounts onto a precision-machined bracket inside the housing, ensuring perfect optical alignment with the tempered glass window. Certified cable glands provide a safe and secure entry point for power and data cables, maintaining the enclosure's explosion-proof rating. For guidance on your specific setup, contact our specialists to request a quote.

Ordering & Shipping Details

• 📦 Lead Time: 6 weeks
• 📍 Shipping Terms: Worldwide / Expedited Options Available
• 💳 Payment Options: Credit Card, PayPal, Net 30 (Approved Accounts)

FAQs:

Is this housing certified for hazardous locations?
Yes. The L4 Series is designed for explosion-proof use in hazardous industrial environments.

Which vision sensors are supported?
This housing is specifically engineered for Keyence IV3 and IV4 vision systems.

Does the housing include the vision sensor?
No. The housing is supplied separately and is designed to enclose customer-provided Keyence sensors.

Can this be used outdoors?
Yes. The rugged design supports use in harsh indoor and outdoor industrial environments.

What specific hazardous area ratings does the L4 Series carry?
The L4 Series carries ATEX certification and UL/cUL Class I, Division 1, Group B, with a NEMA 4X/7/9 enclosure rating. Please refer to the datasheet for the full certification details.

What is the viewing window made of and why?
The housing features a tempered soda-lime float glass viewport, impact tested to UL standards for hazardous locations, ensuring the vision sensor maintains its high performance and accuracy over time.

Can you assist with integrating this into my existing control system?
While we provide the certified enclosure, we recommend working with a qualified system integrator for full control system integration. However, our specialists are available to answer any questions you have about the housing's capabilities and connections. Talk to a hazardous-area specialist today.