Product Overview
The Fireye 95UVS2-1 is an advanced microprocessor-based InSight® series ultraviolet (UV) flame scanner, engineered to deliver precise and reliable flame detection for critical industrial combustion safety systems . As part of Fireye’s Type 95 flagship line, the Fireye 95UVS2-1 integrates a solid-state UV sensor, signal amplifier, and output relays into a single compact housing, eliminating the need for external remote amplifiers and simplifying installation in burner management systems (BMS) . This integrated design positions the Fireye 95UVS2-1 as a versatile solution for detecting UV radiation from gas, oil, and coal flames, providing continuous monitoring and automatic threshold calibration .
The Fireye 95UVS2-1 features the InSight series’ sophisticated modulation amplitude measurement technology, which continuously evaluates the flicker characteristics of the target flame to discriminate between genuine flame signals and background radiation . The “S2” model designation indicates enhanced capabilities, including automatic set-up procedures that select optimal modulation frequency and sensor gain, as well as automatic flame relay ON/OFF threshold determination . This self-calibrating functionality significantly reduces setup time and complexity, positioning the Fireye 95UVS2-1 as an ideal choice for applications requiring the highest level of flexibility and sophistication, such as large multi-burner boilers and furnaces .
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | Fireye 95UVS2-1 |
| Manufacturer | Fireye (Honeywell) |
| Product Type | Integrated UV Flame Scanner / Flame Detector |
| Series | InSight Type 95 Series |
| Detection Technology | Solid-State Ultraviolet (UV) Sensing |
| Spectral Response | 295-320 nm (Solar-Blind) or 185-260 nm (variant dependent) |
| Input Power | 24 VDC, +10%/-15%, 0.35 A (8.5 VA) |
| Flame Relay | Internal SPST (N.O.) with Adjustable ON/OFF Thresholds |
| Fault Relay | Internal SPST (N.C.) |
| Analog Output | 4-20 mA (Flame Signal Strength) |
| User Interface | 8-Character Alpha-Numeric LED Display & 4-Button Keypad |
| Flame Fault Response | <2 Seconds |
| Viewing Angle | 90° Cone |
| Housing | Cast Aluminum with Silver Polyester Powder Coating |
| Electrical Connection | 12-Pin Quick-Disconnect |
| Operating Temperature | -40°C to +65°C (Ambient) |
| Protection Rating | NEMA 4X / IP66 |
| Approvals | UL, FM, CE (CEX variants for ATEX EExd IIC T6) |
Main Features and Advantages
Integrated, self-calibrating design: The Fireye 95UVS2-1 eliminates the need for separate flame amplifiers by integrating signal processing and relay outputs directly into the scanner housing . The “S2” model’s AutoTune feature automatically determines the optimal modulation frequency and sensor gain during setup, and automatically sets the flame relay ON and OFF thresholds, dramatically simplifying installation and commissioning . This integrated architecture of the Fireye 95UVS2-1 reduces control cabinet complexity, saves panel space, and minimizes wiring requirements for burner management systems .
Model Insight algorithm for false flame discrimination: The Fireye 95UVS2-1 incorporates the advanced Model Insight algorithm, which goes beyond simple UV presence detection. During the initial 30-second learning period after first ignition, the Fireye 95UVS2-1 memorizes the unique ultraviolet “fingerprint” of the stable flame—its flicker frequency and intensity pattern . Throughout operation, only UV signals matching this learned fingerprint are recognized as true flame, effectively filtering out false signals from glowing furnace walls, incandescent carbon particles, or welding arcs . This sophisticated discrimination capability of the Fireye 95UVS2-1 directly addresses the industry pain point of nuisance “false flame-out” alarms that cause costly unplanned shutdowns .
Comprehensive diagnostic and output capabilities: The Fireye 95UVS2-1 features electronic self-checking that eliminates the mechanical shutter required in older scanners, improving reliability and reducing maintenance . The onboard 8-character LED display and four-button keypad enable direct field programming and diagnostics without external tools . The Fireye 95UVS2-1 provides three simultaneous outputs: a flame relay for burner shutdown, a fault relay for diagnostic alarm, and a 4-20 mA analog signal proportional to flame strength for combustion process optimization and trending analysis . This comprehensive output suite makes the Fireye 95UVS2-1 a complete solution for both safety and control applications.