Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | Fireye 95DSS2E-1 |
| Manufacturer | Fireye (USA) |
| Product Type | Integrated Flame Scanner (UV + IR Dual Sensor) |
| Product Series | InSight Type 95DSS2 (Enhanced S2 Model) |
| Sensing Technology | Dual solid-state: UV (295–320 nm) + IR (700–1700 nm) |
| Power Supply | 24 VDC (+10% / -15% tolerance), 0.35A, ~8.5VA |
| Flame Relay | Internal SPST-NO, adjustable ON/OFF thresholds |
| Fault Relay | Internal SPST-NC, fail-safe operation |
| Relay Contact Rating | Min: 10mA @ 5VDC; Max: 2A @ 30VDC / 2A @ 240VAC |
| Analog Output | 4-20 mA DC, max load 750Ω (flame signal strength) |
| Modulation Frequencies | 21 selectable (23–179 Hz) |
| Programmable Files | 4 sets (A/B/C/D) for different fuels or firing rates |
| Operator Interface | 8-character alphanumeric LED display + 4-button keypad |
| Response Time | Flame Failure Response Time (FFRT): 1–6 seconds (default 1s) |
| Housing Material | Die-cast aluminum with gray polyester powder coating |
| Environmental Protection | NEMA 4X, IP66 |
| Operating Temperature | -40°C to +65°C / +85°C (varies by source) |
| Humidity | 0% to 95% relative humidity, non-condensing |
| Electrical Connection | 12-pin quick-disconnect connector |
| Weight | Approx. 1.41 kg (3.1 lbs) |
| Approvals | CE, FM, UL, CSA |
| Functional Safety | SIL3 Capable (IEC 61508, Type B device) |
| Lifecycle Status | Active – In Production |
Main Features and Advantages
Dual-Spectrum UV/IR Sensor Fusion: The Fireye 95DSS2E-1 delivers superior flame discrimination through its dual-sensor design. By simultaneously monitoring both UV and IR spectral bands, the scanner effectively distinguishes true flame from background radiation, such as glowing refractory or hot furnace walls. The UV sensor responds to ignition events in gas and light oil applications, while the IR sensor tracks the characteristic flicker of oil and coal flames . This dual-channel verification provides a robust “AND” logic signal, virtually eliminating false alarms that plague single-spectrum detectors in multi-fuel burners . The Fireye 95DSS2E-1 automatically selects the optimal sensor fusion strategy for the specific fuel being fired.
Integrated “Scanner + Amplifier + Relay” Architecture: The Fireye 95DSS2E-1 eliminates the need for a separate amplifier module, representing a significant advancement over older Fireye systems. The entire signal processing chain—from raw sensor input to flame relay output—is integrated within the scanner head . This design drastically simplifies wiring by allowing the Fireye 95DSS2E-1 to connect directly to a Burner Management System (BMS) via its built-in flame and fault relays. With fewer components and connections, the Fireye 95DSS2E-1 enhances system reliability, reduces installation footprint, and lowers overall maintenance costs.
AutoTune and Programmable Flexibility: The “Enhanced” S2 model of the Fireye 95DSS2E-1 provides sophisticated tuning capabilities. The AutoTune function automatically sweeps through 21 available flame-flicker frequencies and selects the optimal modulation frequency and sensor gain for each burner, significantly reducing commissioning time . Additionally, the Fireye 95DSS2E-1 stores four independent programmable files, allowing operators to instantly recall different configuration sets for various fuel types or firing rates . This flexibility ensures optimal performance across changing operational conditions without manual reconfiguration.
Robust, Electronic Self-Checking and Diagnostics: The Fireye 95DSS2E-1 features fully electronic self-diagnostics, eliminating the mechanical shutter found in older designs. This electronic self-check improves reliability by removing a common failure point while continuously verifying sensor integrity . The onboard 8-character LED display and 4-button keypad provide real-time feedback, including numeric flame signal strength (0-999), relay status, and fault codes . For remote integration, the Fireye 95DSS2E-1 outputs a 4-20mA analog signal proportional to flame strength and supports Modbus communication, enabling centralized monitoring and data logging .
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