Honeywell LG1093AC01

Technical & Performance Specifications

1. Optical Detection Parameters
   • Sensitive UV Wavelength Band: 180 nm – 260 nm solar-blind spectrum
   • Flame Response Speed: Typical 0.1 s flame detection; maximum 0.2 s flame loss shutdown signal
   • Detection Technology: Geiger-Mueller UV phototube with gas-filled sensing chamber
   • Solar Blind Characteristic: Zero response to visible light, infrared radiation and black-body heat emission
2. Electrical Operating Ratings
   • Supported Amplifier Supply Voltage: 20–35 VDC or 115 VAC amplifier-side power
   • Maximum Sensor-to-Amplifier Cable Distance: Up to 330 m with matched shielded wiring
   • Built-In Cable Length (AC01 Model): 9 ft / 2.7 m stainless steel armored two-conductor cable
3. Physical & Environmental Ratings
   • Sensing Head Outer Diameter: 1.73 inch threaded flange mounting body
   • Window Pressure Resistance Rating: 150 psig maximum process pressure at 204°C
   • Operating Temperature Range: -40°C ~ +176°C sensing head installed at burner sight port
   • Storage Temperature: -40°C ~ +85°C
   • Protection & Hazardous Area Certification: ATEX II 2G EEx d IIC T3, FM Class I Div 1/2 Groups B/C/D explosion-proof rating
   • Mean Time Between Failures (MTBF): 10,000 continuous operating hours
   • Net Unit Weight: 1.8 kg complete with armored cable assembly
4. Mechanical Mounting
   • Flange Mount Interface: 0.14 inch width mounting flange for threaded burner sight glass port installation
   • Viewing Window: High-temperature UV-transparent quartz crystal sealed to sensor housing

Function Features

• Solar-blind UV spectrum filtering eliminates false flame fault trips from sunlight, furnace hot metal glow and workshop lighting
• Ultra-fast 0.2-second flame loss response triggers immediate BMS fuel valve safety cut-off to prevent unburned gas accumulation explosion hazards
• Explosion-proof sealed housing certified for Class I hazardous gas burner and turbine enclosures
• Stainless steel armored signal cable resists mechanical abrasion, high-temperature radiation and chemical vapor corrosion inside combustion equipment housings
• Wide process temperature tolerance compatible with gas turbine exhaust and high-temperature industrial boiler sight ports
• Long-distance signal transmission capability allows amplifier mounting in safe control rooms separate from high-temperature burner zones
• Low maintenance solid-state UV tube design with no moving mechanical components prone to wear
• Fully compatible with Honeywell EG1033 series flame signal amplifiers supporting single/dual sensor monitoring configurations
• High vibration resistance construction stable for continuous 24/7 combustion equipment operation

Working Principle

Material & Structural Composition

• Sensing Head Housing: Machined 316 stainless steel explosion-proof pressure vessel body
• Viewport Window: Synthetic high-temperature UV-transparent quartz crystal
• Internal Sensing Element: Hermetically sealed gas-filled Geiger-Mueller UV phototube
• Signal Cable: Dual copper conductor core encased in braided stainless steel armor outer sheath
• Sealing Materials: High-temperature fluorosilicone rubber gaskets resistant to combustion gas chemical corrosion
• Mounting Flange: Integral machined stainless steel threaded flange for burner sight port fastening

Installation Requirements

1. Mount sensor threaded flange directly to dedicated burner sight glass port; align viewing window for unobstructed line-of-sight flame observation
2. Avoid mounting with direct exposure to hot furnace refractory glow or secondary combustion UV reflection
3. Route armored cable away from high-temperature burner exhaust surfaces; maintain minimum 10 cm clearance from flame radiation zones
4. Cable connection to EG1033 amplifier must use shielded terminal wiring with single-point PE ground connection
5. For hazardous area installation, comply fully with ATEX/FM explosion-proof wiring conduit standards
6. Tighten flange mounting bolts evenly to avoid quartz window gasket leakage under process pressure
7. Maintain maximum 330 m total cable run between sensor head and flame amplifier unit

Application Scenarios

• Industrial natural gas / light oil fired steam and hot water boiler flame safety monitoring
• Gas turbine combustion chamber flame detection for power generation units
• Refinery process heater and cracking furnace burner flame supervision
• Petrochemical plant thermal oxidizer and waste gas incinerator safety cut-off systems
• Manufacturing plant heat treatment furnace gas burner flame protection control

Usage Precautions

• Complete fuel supply isolation and equipment cool-down before removing sensor from burner sight port
• Do not scratch or contaminate quartz viewing window with grease, soot or dust; partial blockage causes weak UV signal and false flame loss faults
• Regularly clean quartz window every 3 months to remove combustion soot buildup blocking UV transmission
• Avoid mechanical impact to stainless steel sensing head body; internal phototube damage causes permanent detection failure
• Verify amplifier power supply voltage stays within 20–35 VDC operating range; under/overvoltage distorts flame signal accuracy
• Replace UV sensor tube if flame detection sensitivity drifts after 10,000 operating hours of continuous service
• Armored cable armor sheath must connect to facility protective earth at amplifier cabinet end only to eliminate ground loop signal noise