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High-Temperature UV Flame Detector

High-Temperature UV Flame Detector

High-Temperature UV Flame Detector

Product catalog summary
Features
  • Operates at high temperatures up to 125°C.
  • Wide field of view of 110° horizontally.
  • Continuous Optical Path Monitoring (COPM) for integrity checks.
  • Constructed with stainless steel for durability.
  • Explosion-proof wiring compartment for safety.
  • Fast response time of 100 milliseconds for critical applications.
Benefits
  • Ideal for gas turbine applications.
  • Provides extensive coverage with fewer detectors.
  • Ensures optical path and electronic circuitry integrity.
  • Resistant to corrosion, suitable for marine environments.
  • Facilitates easy field wiring connections.
Description

The General Monitors Model FL3111HT is a high-temperature UV-only flame detector designed to detect fires while minimizing false alarms. It operates in the UV spectral range for rapid response and can withstand ambient temperatures up to 125°C. The detector features an explosion-proof housing and a separate Exe wire compartment, with a 4-20 mA stepped output available. The COPM self-test feature ensures the optical path and electronic circuitry are checked every minute.

Applications
  • Gas Turbines
  • Compressor Stations
  • Power Generation
  • Generator Sets
  • Solvent Extraction
  • Drying Processes
  • Paint Booths
System Specifications
  • Wavelengths: 185 to 260 nm
  • Field of View: 110° horizontal, 115° vertical
  • Sensitivity: Detects a 1 sq. ft. N-heptane fire at 15.2 m (50 ft)
  • Response Time: Less than 1 second at 50 ft
  • Minimum Sensor Response Time: Less than 100 ms
  • Classification: II 2 GD Ex de IIC T3, IP66
  • Warranty: Two years
  • Approvals: ATEX and CE Marking
Environmental Specifications
  • Operating Temperature Range: -40°C to +125°C
  • Storage Temperature Range: -40°C to +125°C
  • Operating Humidity Range: 0% to 100% RH, non-condensing
  • Pressure Range: 80 kPa to 110 kPa
Mechanical Specifications
  • Housing: Stainless steel
  • Diameter: 84 mm
  • Length: 136 mm
  • Weight: 2.27 kg
  • Cable Entries: 2 x M20
Electrical Specifications
  • Input Power: 20-36 VDC
  • Analogue Signal: 4-20 mA
  • Fault Signal: 0 mA
  • COPM Fault: 2.0 ± 0.4 mA
  • Ready Signal: 4.0 ± 0.4 mA
  • WARN Signal: 16.0 ± 0.4 mA
  • ALARM Signal: 20.0 ± 0.4 mA
  • Selectable Options: Sensitivity and Alarm Time Delay
  • RFI/EMI Protection: Complies with EN50270, Type 2
  • Exe Terminal: 0.75 – 2.5 mm²
  • Cable Requirements: 3 wire shielded cable minimum
Status Indicators
  • Two LEDs for status and fault cues
Fault Monitoring
  • Monitors optics failure/blockage and low supply voltage
Standard Configuration
  • FL3111HT-1-3-1 with 100% sensitivity and 4-second time delay
See more

Catalog excerpts

High-Temperature UV Flame Detector-1

Features Benefits Operates at high temperatures (125C) Suitable for gas turbine applications Wide field of view (110а Horizontal) Greater coverage for detecting fires utilising fewer detectors Continuous Optical Path Monitoring (COPM) Checks optical path integrity and detectors electronic circuitry once every minute Stainless steel construction High level of corrosion resistance for marine environments Exe wiring compartment Ease of field wiring connection Fast response 100 milliseconds for critical applications Description Applications General MonitorsҒ Model FL3111HT is a high temperature rated UV-only flame detector designed to detect unwanted fires while maintaining false alarm immunity. The FL3111HT detects in only the ultraviolet (UV) spectral range for optimized speed of response. The detector can withstand ambient temperatures up to 125C maximum. This is achieved by the use of a specially selected detector and electronic components and very low power consumption to reduce self-heating. The detectorВs electronics are integral within an explosion proof housing, allowing detector information to be processed at the point of detection. The electronics are fully separated from the Exe wire compartment, offering protection during installation and service. The FL3111HT is available with 4-20 mA stepped output. The COPM (Continuous Optical Path Monitoring) self test feature checks the optical path integrity (window cleanliness) and the detector֒s electronic circuitry once every minute. Gas Turbines Compressor Stations Power Generation Generator Sets Solvent Extraction Drying Processes Paint Booths >

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High-Temperature UV Flame Detector-2

Wave Lengths: 185 to 260 nm Input Power: 20-36 VDC 24 VDC @ 60 mA typ / 85 mA max. Field of View: 110 horizontal 115а vertical Analogue Signal: 4-20 mA (350 Ohms max.) Sensitivity: Approved performance specifications 15.2 m Fault Signal: 0 mA ( 50 ft) distance for a 1 sq. ft. (0.092 m COPM Fault: 2.0 ֱ 0.4 mA > 2 ) N-heptane fire. Ready Signal: 4.0 0.4 mA WARN Signal: 16.0 ѱ 0.4 mA ALARM Signal: 20.0 0.4 mA Typical Response Time: > Minimum Sensor Response Time: Sensitivity: 100%, 75%, 50% Alarm Time Delay: 2, 4, 8 or 10 seconds 26776 Simpatica Circle Lake Forest, California 92630 Tel: +1-949-581-4464...

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