FL500 UV/IR FLAME DETECTOR
Fast Flame Detection. Increased False Alarm Immunity.
Detect flame hazards rapidly with proven UV/IR technology that monitors both ultraviolet and infrared radiation for fast response and increased immunity to false alarm sources.
Reliable UV/IR flame detection for demanding industrial applications.
Proven Across Critical Industries
Oil & Gas | Petrochemical | Refining | LNG | Power Generation | Chemical Processing
130° Field of View
Continuous Optical Self-Check
FM Performance Approved
-55°C to +85°C

Detect Faster. Reduce False Alarms. Verify Performance.
Designed to provide rapid flame detection, increased false alarm immunity, and continuous verification for critical industrial fire protection applications.
- High-speed flame detection
- UV and IR sensing technology
- 130° field of view
- Broad detection coverage
- Increased false alarm immunity
- Dual-spectrum flame verification
- FM performance approved
- Tested across seven fuel sources
- Automatic self-check every two minutes
- Optical path monitoring
- Electronic circuitry verification
- Clear LED status indication
Proven UV/IR Flame Detection
✓ UV and IR dual-spectrum flame detection
✓ 130° wide field of view
✓ Continuous Optical Path Monitoring (COPM)
✓ FM Performance Approved
✓ 316 stainless steel housing
Detection Performance
Fuel Sources Tested
Heptane • Methane • Methanol • Propane • Ethane • Butane • Hydrogen
Spectral Detection
UV: 185–260 nm
IR: 4.35 μm
Operating Temperature
-55°C to +85°C
Outputs & Communications
4–20 mA • HART® • Modbus • 5 A Relays
Learn More About the FL500 UV/IR Flame Detector
See technical specifications, approvals, configuration options, and documentation for the FL500.
Built for Demanding Industrial Environments
Designed for critical flame detection applications, the FL500 combines rugged construction, wide-area coverage, and reliable UV/IR detection for operation in challenging industrial conditions.
With a 316 stainless steel housing and an operating temperature range from -55°C to +85°C, the FL500 is engineered for reliable performance across both indoor and outdoor installations.
- 316 stainless steel housing
- -55°C to +85°C operating range
- 130° wide field of view
- Continuous Optical Path Monitoring
- Multiple industrial communication options
- Suitable for hazardous industrial environments

Beyond the Product. A Complete Detection Solution.
Local Expertise. Global Technology.
Selecting the right detection technology is only part of the solution. Proper application assessment, detector selection, placement, commissioning, and ongoing support are critical to achieving reliable fire and gas detection performance.
Sherbiny combines globally trusted fire and gas detection technologies with local engineering expertise to help industrial facilities deploy effective detection solutions with confidence.
Product Selection Support
Receive guidance on selecting the most suitable gas detection technologies based on your application, hazards, operating environment, and monitoring requirements.
Application Engineering
Work with experienced specialists to evaluate process risks, environmental conditions, and detector deployment requirements.
Fire & Gas Mapping
Optimize detector placement and coverage through fire and gas mapping studies designed to improve detection performance and reduce coverage gaps.
Commissioning Assistance
Support during installation, configuration, testing, and startup to help ensure your gas detection system performs as intended.
Technical Training
Equip operations and maintenance teams with practical knowledge for operating, testing, and maintaining gas detection systems.
Local After-Sales Support
Access local support for troubleshooting, maintenance planning, product information, and ongoing system requirements.
Resources & Downloads
Let’s Find the Right Detection Solution for Your Facility
Whether you’re designing a new installation or upgrading an existing system, our team can help.
