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Description
Application Scenarios
In a large refinery’s thermal oxidizer unit, nuisance flame-out alarms occurred weekly due to intense sunlight reflection off the furnace wall, causing unnecessary safety shutdowns and costing the plant over $150,000 annually in lost production and restart expenses. The facility replaced its standard UV detectors with the Fireye 95UVS2-1, whose solar-blind UV sensor (185-260 nm response) and Model Insight algorithm effectively rejected false UV radiation from sunlight and hot refractory. Since the upgrade, the system has operated with zero false trips and a 99.9% burner availability rate. For boiler operators and power plants, the Fireye 95UVS2-1 provides continuous flame verification during startup and normal operation, ensuring that fuel valves are immediately locked out upon flame loss, satisfying NFPA 85 (boilers) and NFPA 86 (industrial furnaces) safety standards.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 95UVS2-1 |
| Manufacturer | Fireye (Honeywell PMT) |
| Product Category | Enhanced UV Flame Scanner (Integrated Amplifier + Relays) |
| Detection Principle | Ultraviolet (UV) Spectra, Model Insight Algorithm |
| Spectral Response | 185-260 nm (Solar-Blind UV, immune to sunlight / welding arcs / incandescent light) |
| Viewing Angle | 90° Cone |
| Max Detection Range | Up to 15 m |
| Response Time | Flame Recognition: 3-20 ms; Flame Failure: < 2 sec (default) |
| Analog Output | 4-20 mA (4 mA = no flame, 20 mA = 100% flame intensity) |
| Flame Relay | SPST-NO (energized when flame is detected) |
| Fault Relay | SPST-NC (de-energized upon internal fault or power loss) |
| Self-Diagnostics | Electronic self-check (no mechanical shutter), real-time sensor/circuit health monitoring |
| Power Supply | 24 VDC (+10%/-15%), 0.35 A / 8.5 VA |
| Electrical Connection | 12-pin quick-disconnect (standard) or 10 ft cable (CG models) |
| User Interface | 8-character LED display + 4-button keypad for programming and diagnostics |
| Operating Temperature | -40°C to +65°C (scanner body); up to +175°C at sight tube |
| Cooling Air | Required: ~4 SCFM (113 L/min) clean, dry air |
| Enclosure Rating | NEMA 4X / IP66 (weatherproof and corrosion-resistant) |
| Mounting | 1″ NPT thread or flange mount |
| Compliance | NFPA 85 / 86, FM Approved, UL, CSA; Class 1 Div 2 Groups A,B,C,D |
