Infrared (IR) Sensor

• Detects infrared radiation produced by flames
• Analyzes specific IR flicker frequencies characteristic of real fire
• Helps differentiate flames from hot objects or sunlight

Dual Confirmation Logic

The detector only triggers an alarm when:

• Both UV and IR sensors detect flame signatures simultaneously
• The detected signals match flame flicker patterns

This dual-spectrum verification dramatically reduces false alarms caused by:

• Welding arcs
• Lightning
• Sunlight reflections

Key Advantages

• Ultra-fast response (often < 0.5 seconds)
• High false-alarm immunity
• Reliable in harsh environments (dust, steam, humidity, hydrocarbons)
• Wide field of view
• Suitable for indoor and outdoor use
• SIL-rated options available for safety-critical applications

UV/IR detectors are widely deployed in:

• Oil & Gas facilities(refineries, LNG plants, offshore platforms)
• Petrochemical plants
• Power generation facilities (turbine enclosures, fuel handling areas)
• Chemical processing plants
• Fuel storage terminals
• Aircraft hangars
• Paint booths

Why UV/IR Technology Is Ideal for Hazardous Locations

Hazardous areas often contain:

• Flammable gases or vapors
• High temperatures
• Electrical noise
• Dust, steam, and harsh weather conditions

Single-spectrum detectors may trigger nuisance alarms in such environments. By requiring simultaneous UV and IR confirmation, UV/IR detectors ensure:

• Faster fire recognition
• Greater operational continuity
• Reduced downtime from false trips
• Enhanced personnel and asset protection