Description
Manufacturer: Fireye (Nortec)
Part Number: SC2L-95UVS1E-1CEX (Base model: 95UVS1E-1CEX, InSight I Series UV Flame Scanner)
Product Type: Explosion-proof Ultraviolet Integrated Flame Scanner for Burner Management System (BMS)
Product Overview
The SC2L-95UVS1E-1CEX is a legacy microprocessor-based self-checking UV flame scanner from Fireye InSight 95UVS1 series. It detects ultraviolet radiation emitted by gas and oil flames, used for flame supervision in burner management safety systems. The 1CEX suffix designates explosion-proof housing for hazardous classified areas. This unit integrates sensor, signal processing, flame relay and 4–20mA analog output, eliminating requirement for separate external flame amplifier.
Technical Specifications
| Parameter | Value |
|---|---|
| Sensing Spectrum | UV, 295–320 nm |
| Power Supply | 24 V DC |
| Flame Failure Response Time (FFRT) | 1 second (E variant) |
| Output Signal | 4–20mA flame intensity analog signal + relay contact output |
| Housing | Cast aluminum explosion-proof enclosure |
| Enclosure Rating | IP66 / NEMA 4X |
| Hazardous Certification | Ex d IIC T6, Class I Div 1 Groups A,B,C,D |
| Electrical Connection | Terminal block wiring inside explosion-proof housing |
| Operating Ambient Temp | -40 °C ~ +85 °C |
| Weight | ~2.9 kg |
| Mounting | Threaded sight tube mount, cooling air port for purging air |
| Communication | RS485 for scanner configuration & diagnostic readout |
Key Features
- Integrated UV flame detection with solid-state electronic self-check; no mechanical shutter required.
- 1-second fast flame failure response (E version), critical for boiler/gas turbine BMS safety trips.
- Explosion-proof Ex d housing for installation directly in hazardous zone 1 / Class I Div 1 environments.
- Front keypad & display to set flame gain, pull-in / drop-out thresholds, flicker frequency parameters.
- Real-time 4–20mA proportional output, allowing continuous flame strength monitoring in DCS/BMS.
- Built-in diagnostics for lens fouling, sensor fault, power loss and internal hardware failures.
- Purge air connection port to keep viewing window clean from soot and combustion debris.
Application Scenarios
- Industrial boiler burner management safety systems
- Gas-fired / oil-fired process heaters in refineries
- Power plant auxiliary boiler flame supervision
- Cement kiln and furnace combustion monitoring
- Hazardous area burner control for petrochemical plants
Installation & Maintenance Notes
- Align scanner sight line directly to flame; maintain continuous clean instrument purge air supply.
- Use shielded twisted pair wiring for 24V DC power and 4–20mA signal, single-point ground.
- Verify explosion-proof conduit seals are fully fitted and intact; damaged seals invalidate hazardous approval.
- Perform flame learn / auto-characterization during commissioning to suppress background radiation false trips.
- Clean viewing window and check purge air pressure during planned outages; soot buildup reduces UV sensitivity.
- Confirm BMS logic matches 1-second FFRT trip timing for burner safety interlocks.
- This is an older InSight I model; recommended spare replacement is Fireye 95UVS4-1WINC.
FAQ
Q: What does suffix “1CEX” mean? A: 1 = standard wiring terminal version; CEX = explosion-proof Ex d certified housing for hazardous locations.
Q: What is the FFRT of this scanner? A: 1 second, denoted by the “E” in model code (95UVS1E).
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