Honeywell LG1093AA24 261A1812P012

Technical Specifications

• Detection Spectrum Band: 190 nm ~ 290 nm ultraviolet wavelength
• Recommended Operating Supply Voltage: 325 V DC ±25 V DC (operating range 260–350 V DC)
• Field of View Angle: 80° conical detection coverage
• Continuous Operating Temperature Range: -40°C ~ +177°C sensor head
• Peak Pressure Rating: 21 bar (300 psi) continuous at 316°C flange interface
• Mounting Thread Interface: 3/4-inch internal NPT female process thread
• Integrated Cable Length: 4.9 meters (16 ft) PTFE armored cable assembly
• Cable Conductor Configuration: 3-conductor (Green ground, Black positive, Yellow negative)
• Vibration Resistance Rating: 2.5g continuous vibration 10–500Hz frequency band
• Ingress Protection Rating: IP65 sensor head sealed housing

Function Features

1. Narrow UV spectral sensitivity eliminates false flame detection from sunlight, incandescent lighting and furnace hot refractory surfaces
2. Ultra-fast pulse signal output for instantaneous flame loss detection and safety trip actuation
3. High-temperature stainless steel housing withstands gas turbine combustor flange high heat exposure
4. Armored PTFE high-temperature cable resists turbine compartment heat, oil and chemical fluid contamination
5. Explosion-proof certified housing for Class I Div 1 hazardous combustion equipment enclosures

Performance Parameters

• Flame signal response time: <200 ms full flame-out detection latency
• Standard flame pulse output frequency: 275 pulses per second ±25 pulses per second
• Background noise pulse count: <5 pulses per minute with no flame present
• Minimum detectable flame UV intensity: <5 mW/cm² spectral power density
• Service life under continuous gas turbine operation: ≥40,000 operating hours
• Spectral rejection ratio for visible light: ≥99.9% visible spectrum signal attenuation

Material Composition

• Sensor head housing: 1.4571 austenitic stainless steel high-temperature alloy
• Optical viewing window: Fused silica UV-transparent quartz glass
• Internal UV detection tube: High-sensitivity gas discharge ultraviolet photocell
• Outer cable sheath: Orange PTFE high-temperature chemical resistant polymer
• Cable armor: Galvanized steel interlocking metal armor
• Internal sealing gaskets: High-temperature graphite filled PTFE compression seals

Structural Characteristics

• Cylindrical compact sensor head with single front fused silica optical window
• Rear integrated molded cable gland eliminating field wiring disassembly requirements
• Standard 3/4-inch NPT internal threaded mounting flange for direct turbine combustor installation
• Fully encapsulated internal detection tube assembly with high-temperature thermal compound
• Continuous interlocking steel armor cable protecting PTFE insulated internal conductors

Working Principle

Advantage Highlights

1. Targeted UV spectrum filtering eliminates all common industrial false alarm interference sources
2. High-temperature alloy housing and quartz window compatible with gas turbine combustor flange mounting
3. Factory integrated 4.9m armored high-temperature cable eliminates field high-temperature wiring fabrication
4. IP65 sealed construction resists turbine compartment oil mist, water vapor and dust ingress
5. Global explosion-proof hazardous area certifications for power generation and oil & gas combustion safety systems

Applicable Industries

Installation Requirements

1. Thread sensor head 3/4-inch NPT fitting directly into turbine combustor sight port with high-temperature anti-seize thread compound
2. Maintain unobstructed 80° field of view between quartz window and flame combustion zone with no mechanical obstructions
3. Route armored cable with minimum 100mm bend radius to avoid steel armor kinking and internal conductor damage
4. Connect cable green ground conductor to combustion safety cabinet dedicated safety ground busbar
5. Mount cable support clamps every 1.2 meters to eliminate cable weight tensile load on sensor head gland

Usage Precautions

1. Prevent mechanical scratch damage to fused silica optical window; scratches reduce UV transmission and cause low flame signal faults
2. Do not operate sensor head above 177°C continuous temperature rating; permanent photocell degradation occurs
3. Avoid direct high-pressure process steam jet cleaning of sensor head quartz window
4. Inspect cable armor annually for corrosion damage in offshore or coastal salt-air environments
5. Calibrate flame signal detection threshold every 18 months per combustion safety system regulatory standards