85UVF1-1QD Fireye Phoenix UV Flame Scanner, 24VDC Powered Integrated Flame Detector with Relay & 4‑20mA Output for Gas / Light Oil Burner Flame Monitoring
85UVF1-1QD Fireye Phoenix UV Flame Scanner, 24VDC Powered Integrated Flame Detector with Relay & 4‑20mA Output for Gas / Light Oil Burner Flame Monitoring - Image 2
85UVF1-1QD Fireye Phoenix UV Flame Scanner, 24VDC Powered Integrated Flame Detector with Relay & 4‑20mA Output for Gas / Light Oil Burner Flame Monitoring - Image 3
85UVF1-1QD Fireye Phoenix UV Flame Scanner, 24VDC Powered Integrated Flame Detector with Relay & 4‑20mA Output for Gas / Light Oil Burner Flame Monitoring - Image 4

85UVF1-1QD Fireye Phoenix UV Flame Scanner, 24VDC Powered Integrated Flame Detector with Relay & 4‑20mA Output for Gas / Light Oil Burner Flame Monitoring

  1. 85UVF1‑1QD – UV scanner, standard model, QD connector (Target Model)
  2. 85UVF1‑1QDK3 – UV scanner with K3 optical filter for heavy soot environment
  3. 85UVF4‑1QD – High sensitivity UV variant
  4. 85IRF1‑1QD – Infrared flame scanner for heavy oil / solid fuel
  5. 45UV5‑1101 – Older generation mechanical shutter self‑check UV scanner
  6. 25SU5 – Fireye standalone flame safeguard controller
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Description

85UVF1-1QD Fireye Phoenix UV Flame Scanner, 24VDC Powered Integrated Flame Detector with Relay & 4‑20mA Output for Gas / Light Oil Burner Flame Monitoring

 

Product Application

85UVF1‑1QD belongs to Fireye Phoenix 85UVF series microprocessor‑based ultraviolet flame scanner. It captures the flicker modulation amplitude of hydrocarbon flame in UV spectrum to judge flame presence or flame loss. Integrated design: Flame amplifier and relay are built inside scanner housing, no separate flame amplifier module needed. Widely used for industrial boilers, process heaters, thermal oil furnaces, incinerators and gas turbine auxiliary burners. Suitable fuels: natural gas, propane, light fuel oil. It supports multi‑burner furnace cross‑flame discrimination. With full electronic self‑diagnosis function, it can report scanner hardware fault independently, directly interlock burner fuel shut‑off valve through internal relay. Suitable for Class I Div 2 / Zone 2 hazardous areas in petrochemical and power plants.

85UVF1A-1QD

Product Specifications

  • Part Number: 85UVF1‑1QD
  • Brand: Fireye (USA)
  • Series: Phoenix 85UVF Series 2
  • Detection Type: Ultraviolet (UV) flame sensor
  • Power Supply: 24 VDC ±10%
  • Max Power Consumption: 3.5 W
  • Electrical Interface: 8‑pin QD quick‑disconnect connector (QD suffix = quick disconnect, captive cable cancelled)
  • Analog Output: 4‑20 mA, flame strength signal (sink / source configurable)
  • Relay Output: Dual SPDT relays: Flame ON relay + Fault alarm relay, contact rating 5A @250VAC
  • Flame Failure Response Time: Adjustable 1~6 seconds, factory default 3s
  • Communication: RS‑485 Modbus RTU for remote parameter setting & flame signal reading
  • Housing: Die‑cast aluminum, NEMA 4 / 4X (IP66)
  • Sight Pipe Connection: 1‑1/2” NPT or 1‑1/2” BSP thread
  • Purge Air Port: 3/8‑18 NPT / 3/8‑19 BSP for cooling & lens soot purge
  • Operating Temp (Electronics): -40 ℃ ~ +65 ℃
  • Lens Face Continuous Temperature: Max +121 ℃
  • Certification: FM, UL/cUL, CE, ATEX, SIL3 capable
  • Product Status: Active mainstream Fireye flame scanner spare part

 

Core Technical Parameters

  • Detection Principle: Detect flame modulation flicker amplitude, automatic gain & flame threshold self‑learning on commissioning
  • Self‑Check: Full electronic self‑diagnosis for sensor, circuit and relay health
  • Flame Discrimination: Good capability to distinguish target burner flame from adjacent burner background flame
  • No mechanical shutter: Electronic self‑check design (different from old mechanical shutter 45UV5 series)
  • Compatibility: Directly connects to burner management system, PLC, DCS without external flame amplifier
  • Weight: Approx. 1.3 kg

 

Recommended Matching Spare Parts & Accessories (8 Items)

  1. 59‑546‑X QD quick‑disconnect extension cable (different length options)
  2. 35‑318‑1 / ‑2 mounting flange
  3. Purge air fitting & air filter for scanner cooling
  4. Burner sighting pipe assembly
  5. Flame signal cable for Modbus RS485 communication
  6. Gas safety shut‑off solenoid valve
  7. Burner BMS / PLC burner control system
  8. Fireye configuration software for scanner parameter setup

85UVF1A-1QD

Product Features

✅ All‑in‑one Integrated Design Built‑in microprocessor, flame amplifier and output relays. Eliminates separate flame amplifier cabinet, reduces wiring cost and space.

✅ Automatic Flame Threshold Learning During commissioning, scanner automatically samples the normal flame flicker signal, stores flame ON / OFF threshold and selects optimum gain, greatly simplifies site calibration.

✅ 4‑20mA Flame Strength + Modbus Communication Real‑time flame intensity analog output; RS485 Modbus supports remote monitoring, parameter modification and fault diagnosis from DCS.

✅ Full Electronic Self‑Diagnosis Continuously monitor UV sensor, circuit board and relay status. Trigger fault relay alarm once internal failure detected, avoid unsafe false flame signal.

✅ QD Quick‑Disconnect Plug 8‑pin quick disconnect connector, convenient for scanner removal during maintenance without re‑terminating field cables.

✅ Hazardous Area & High SIL Capability Suitable for Zone 2 / Class I Div 2 hazardous locations; design meets SIL3 requirement for safety instrumented combustion system.

✅ Robust Enclosure with Purge Air Interface NEMA4X aluminum housing, dedicated purge air port to cool scanner and prevent soot deposition on quartz lens.

 

Installation Guidelines

  1. Mount 85UVF1‑1QD onto burner sight pipe via 1‑1/2 inch thread, align optical axis to the flame root of target burner.
  2. Connect instrument purge cooling air to 3/8” port, maintain proper airflow to keep lens clean and scanner temperature within limit.
  3. Wire power, relay signal and Modbus communication via 59‑546 series 8‑pin QD cable to BMS / DCS cabinet.
  4. Complete interlock wiring between Flame‑Off relay and fuel safety shut‑off valve.
  5. Power on scanner, enter teach‑in calibration mode to capture normal flame flicker signature.
  6. Adjust flame failure response time according to burner safety requirement (1~6s).
  7. Perform flame loss test: cut off fuel supply and verify scanner triggers flame‑out relay action.
  8. Lock mounting thread and tighten housing cover to guarantee enclosure sealing.

 

Maintenance Instructions

Daily Maintenance Check flame intensity value on DCS / local indicator. Verify continuous purge air supply. Inspect lens for soot contamination. Check housing seal integrity.

Periodic Maintenance (Every 6–12 months) Clean quartz lens surface soot. Run scanner self‑diagnostic function via Modbus. Inspect QD connector pin condition and cable tightness. Re‑teach flame signature after burner overhaul.

Fault Maintenance

  • Fault relay alarm: Execute scanner self‑diagnosis to confirm sensor / circuit failure, replace scanner if hardware fault confirmed.
  • No flame signal during normal combustion: Clean soot on lens, check sight pipe blockage, verify scanner aiming direction and purge air flow.
  • Flickering flame signal: Re‑run flame teach‑in procedure, check adjacent burner cross‑fire interference.
  • Do not disassemble internal PCB assembly inside housing.

Long‑Term Operation Tips Keep stable, dry purge cooling air supply. Avoid direct furnace high‑temperature radiation to scanner body. Stock spare QD extension cable for quick replacement.

 

Brand Same‑Series Models (6 Models)

  1. 85UVF1‑1QD – UV scanner, standard model, QD connector (Target Model)
  2. 85UVF1‑1QDK3 – UV scanner with K3 optical filter for heavy soot environment
  3. 85UVF4‑1QD – High sensitivity UV variant
  4. 85IRF1‑1QD – Infrared flame scanner for heavy oil / solid fuel
  5. 45UV5‑1101 – Older generation mechanical shutter self‑check UV scanner
  6. 25SU5 – Fireye standalone flame safeguard controller

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