Technical Specifications
- Detection Spectrum Band: Ultraviolet 185nm ~ 260nm flame UV wavelength
- Power Supply Input: 24V AC 50/60Hz control circuit power supply
- Flame Response Detection Time: Max 0.8s flame signal capture
- Flame Loss Lockout Delay Time: 2s fixed safety delay
- Operating Ambient Temperature: -40°C ~ +75°C sensor head; -20°C ~ +60°C wiring base
- Sensing Viewing Angle: 90° conical detection field of view
- Standard Compliance: FM 3710, UL372, EN298 combustion safety certification
- Cable Connection Interface: 2-wire low voltage signal wiring terminal block
Functional Features
- Exclusive ultraviolet optical filter eliminates interference from visible light, infrared thermal radiation and electric arc light
- Solid-state UV tube sensing element without mechanical moving components
- Built-in flame signal amplification circuit with anti-electromagnetic interference shielding shell
- Fixed safety lockout delay prevents false shutdown caused by instantaneous flame flicker
- Compatible with Honeywell full series burner primary control modules
- Weatherproof sensor head structure for outdoor burner installation environment
Performance Parameters
- Minimum Detectable Flame Intensity: 0.1μW/cm² UV radiation intensity
- False Trigger Rejection Rate: 100% rejection of incandescent lamp, fluorescent lamp, welding arc interference
- Service Life of UV Sensing Tube: Minimum 40,000 continuous operating hours
- Signal Output Load Capacity: Max 10VA switch signal load
Material Composition
- Sensor Head Housing: Die-cast aluminum alloy with anti-corrosion epoxy coating
- Optical Window: High-purity quartz glass UV transmission lens
- Internal Signal Circuit Board: FR-4 copper-clad board with nickel electromagnetic shielding layer
- Wiring Base Shell: Glass fiber filled PA66 high temperature resistant plastic
- Sealing Components: Fluorosilicone rubber high temperature resistant sealing rings
Structural Characteristics
- Split two-section structure: independent optical sensing head and separated wiring terminal base
- Standard 1/2 inch NPT threaded mounting interface for burner observation sight pipe installation
- Internal fully sealed cavity structure to block dust, water vapor and corrosive gas infiltration
- Internal metal shielding layer surrounds signal circuit to resist frequency converter electromagnetic interference
Working Principle
Quartz optical lens captures ultraviolet radiation emitted by fuel combustion flame; UV light penetrates dedicated filter and irradiates solid-state UV sensing tube to generate weak photocurrent; internal amplification circuit converts photocurrent into standard flame presence switch signal and transmits to burner controller; when UV radiation signal disappears continuously for 2 seconds, internal circuit cuts off output signal and triggers burner safety lockout protection.
Advantage Highlights
- Narrow UV spectrum filtering completely avoids false detection from industrial ambient light interference sources
- Wide temperature range sensor head adapts to high-temperature burner furnace side installation environment
- Compact threaded mounting design compatible with all standard industrial burner sight ports
- Long service life solid-state sensing element reduces routine maintenance replacement frequency
- Global combustion safety certification supports application in all regions industrial heating equipment
Applicable Industries
Industrial boiler combustion control, hot air circulation furnace burner monitoring, metal heat treatment furnace, food processing drying oven, chemical plant process heating equipment, asphalt mixing plant combustion safety system
Model Series Belonging
Honeywell C7068 Series UV Flame Detectors; C7068A1007 is universal standard voltage specification for 24V AC burner control circuits
Installation Requirements
- Install sensor head on burner dedicated sight tube via 1/2 inch NPT thread, apply high temperature thread sealant
- Align sensor detection view angle fully toward stable flame combustion zone without mechanical obstruction
- Maintain maximum 15m wiring distance between sensor and burner control unit with shielded signal cable
- Separate signal cable routing from high-current burner ignition transformer power cable
- Reserve heat insulation gasket between sensor base and high-temperature furnace shell to reduce heat conduction
Operation Precautions
- Prohibit scratching quartz optical window; scratch damage blocks UV light and causes detection failure
- Regularly clean optical window surface soot accumulation every 30 days of continuous operation
- Do not install sensor facing direct sunlight; solar ultraviolet radiation will trigger permanent false flame signal
- Cut off 24V AC control power before disassembly wiring maintenance
- Replace UV sensing tube when flame detection response time exceeds 1.2 seconds during routine inspection
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