Fireye 95DSS3-1CEXSS

Manufacturer: Fireye (A Honeywell Company)

Product Overview:
Triple-IR (TIR) flame detector with UV channel for false-alarm rejection. Designed for hazardous area (Class I, Division 1) installations in oil & gas, refineries, and chemical plants. The “1CEXSS” suffix denotes intrinsically safe, stainless steel housing, single sensor.

Category:
Description

Material Composition:

  • Housing: 316L Stainless Steel — IP66/IP67 rated
  • Optical WindowSapphire (Al₂O₃) — AR-coated, 95% transmission @ 4.3 µm
  • Electronics Enclosure: Aluminum 6061-T6 — Powder-coated, NEMA 4X
  • Cable Entry3/4″ NPT stainless steel conduit fitting

Technical Specifications:

Parameter Value
Detection Principle Triple IR (4.3 µm) + UV (185–260 nm)
Detection Range 0 – 50 m (hydrocarbon flames)
Response Time < 4 seconds (typical)
Field of View (FOV) 3° (narrow), 5° (standard), 10° (wide)
Intrinsic Safety Ex ia IIC T6 Ga (ATEX), Class I Div 1 Grp A,B,C,D
Supply Voltage 18 – 30 V DC (intrinsically safe barrier required)
Output 4–20 mA / Relay (SPDT, 5 A @ 250 VAC)
Operating Temperature -40°C to +70°C
Protection Rating IP66 / IP67
Standards IEC 61508 SIL 2, NFPA 86, IEC 60079-29

Functional Characteristics:

  • Triple-IR + UV logic eliminates false trips from welding arcs, lightning, and hot surfaces
  • Auto-alignment via built-in boresight laser (Class 2, 635 nm, < 1 mW)
  • Signal-to-noise ratio: > 20:1 at 30 m

Applicable Industries:
Oil & gas upstream/midstream, refineries, petrochemical plants, LNG terminals, offshore platforms

Installation Requirements:

  • Mount on vibration-isolated bracket — max 2G vibration
  • Line of sight to burner must be unobstructed
  • Use IS barrier: Fireye FX-ISB or equivalent — Zener barrier, Uo = 28 V, Io = 93 mA
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