The GE RS-FS-9001 (362A1052P404) is a high-sensitivity ultraviolet (UV) flame detector manufactured by Reuter-Stokes (a Baker Hughes/GE company). Specifically engineered for GE Frame 6, 7, and 9 gas turbines, this “Flame Tracker” is a critical safety component. It provides instantaneous verification of flame presence within the combustion chamber, preventing “explosive starts” by ensuring fuel flow is immediately curtailed if ignition is not detected or if a “flame out” occurs during operation.
The 362A1052P404 is the standardized GE internal part number for this specific assembly, ensuring it meets the rigorous vibration and thermal specifications required for turbine-mounted hardware.
Product Specifications
Technical Parameters
- Model Identification: RS-FS-9001
- GE Part Number: 362A1052P404
- Detection Technology: Ultraviolet (UV) Sensor Tube
- Spectral Response: 185 to 260 nanometers (optimized to ignore solar radiation and incandescent heat)
- Input Voltage: 24V DC (nominal)
- Output Signal: 4–20 mA analog signal proportional to flame intensity
- Response Time: < 100 milliseconds (instantaneous flame/no-flame status)
- Sensitivity: Factory-set for high-intensity turbine combustors
Physical Datasheet
- Housing Material: 316 Stainless Steel (corrosion resistant)
- Cooling Requirements: Integrated water-cooling jacket (essential for maintaining sensor longevity near the combustion zone)
- Pressure Rating: Up to 300 psi (internal combustion pressure)
- Electrical Connection: MIL-C-5015 style circular connector
- Mounting: Specialized flange mount with optical sight tube interface
- Operating Temperature (Sensor Head): Up to 150°C (302°F) with proper cooling active
Application Fields
The RS-FS-9001 is the industry standard for GE-heavy duty gas turbine protection:
- Ignition Monitoring: Verifying the “light-off” phase during the turbine start cycle.
- Flame-Out Protection: Monitoring continuous combustion during base-load or peak-load operation to prevent unburned fuel accumulation.
- Multi-Fuel Applications: Reliable detection across various fuel types, including Natural Gas, Distillate (Diesel), and Syngas.
- DLN (Dry Low NOx) Combustors: Providing high-fidelity feedback for complex, multi-nozzle combustion systems.
Product Usage & Replacement Instructions
- Isolation & Safety: Before replacement, ensure the turbine is in a “Safe-Off” state and the fuel system is locked out. Allow the combustion casing to cool to a safe handling temperature.
- Cooling Line Management: Disconnect the water-cooling supply and return lines. Inspect the hoses for mineral scaling or blockages; a clogged cooling jacket is the #1 cause of premature sensor failure in the RS-FS-9001.
- Optical Alignment: When installing the 362A1052P404, ensure the quartz viewing window is clean and free of soot or oil. Even a thin film of debris can block UV light, leading to a “False Flame-Out” trip.
- Wiring Integration: The 4-20mA signal should be routed through shielded twisted pairs to the Mark V, VI, or VIe control system. Ensure the cable shield is grounded at the control cabinet end only to prevent noise interference.
- Testing: Perform a “Dry Run” test using a UV test lamp (such as the RS-FT-EX-9000) held to the sensor face before final mechanical mounting to verify that the DCS/PLC correctly interprets the flame-on intensity signal.
Q&A – Frequently Asked Questions
Q: Can I clean the internal UV tube if the intensity signal is low? A: No. The UV tube is a sealed component. If the signal is low despite a clean external quartz window and verified cooling, the sensor tube has likely reached the end of its service life and the unit must be replaced.
Q: Is the RS-FS-9001 interchangeable with older Honeywell or Spectrex models? A: While the mounting footprint may be similar, the 362A1052P404 is specifically tuned for GE’s control logic and spectral requirements. Using a non-GE-spec detector can lead to sensitivity issues or delayed response times during critical start-up windows.
Q: What is the typical lifespan of this flame detector? A: In a properly cooled environment, the RS-FS-9001 is rated for approximately 10,000 to 15,000 operational hours. High-ambient heat or cooling failures will significantly shorten this window.
Q: Where can I get a quote for a new or certified replacement unit? A: For current lead times, bulk pricing for turbine outages, and global shipping, please visit our GE Reuter-Stokes RS-FS-9001 Resource Center.
Product Related News
As of May 2026, the GE RS-FS-9001 remains the benchmark for flame detection in the global power generation fleet. With many “H-Class” and “F-Class” turbines undergoing 10-year major inspections this year, the demand for high-reliability 362A1052P404 replacements has increased. Reuter-Stokes has recently improved the internal sensor-mounting substrate to offer better resistance against the high-frequency vibrations common in newer aerodynamic combustors. Maintenance teams are increasingly using portable UV intensity meters to “benchmark” these sensors during annual shutdowns, allowing for proactive replacement before a sensor failure causes an unplanned and expensive “Trip to Off” during peak summer demand.
