Know with confidence if a pilot flame is lit
Reuter-Stokes Flame Sensors
Reuter-Stokes is well-known in the power industry for its reliable Flame Tracker family of flame sensors located in gas turbines. The UV-based Flame Tracker is standard OEM equipment on many models, while the Flame Tracker Dry FTD325 evolved from the standard model to help ISPs and end users reduce maintenance costs. The Flame Tracker Dry also removes the risk of damage from complex water-cooling systems by safeguarding temperature-sensitive components – the sensor end in particular – from exposure to extreme temperatures.
Unlike IR sensors, UV-based flame scanners respond more quickly to changes in flame status because they are not subjected to black body radiation and lack the inertial memory of a thermocouple. Users rely on Flame Tracker models for proper operation of gas turbines and other critical infrastructure and are ideal in situations where other service-prone technologies, like thermocouples, tend to fail.
Top-fired steam methane reformers tend to use flame sensors for start-up only and expect them to fail before operations are ramped down, while traditional sensors installed in areas with excessive heat tend to burn out. Our Flame Trackers continue to operate throughout a plant’s lifecycle without the need to replace, as they are designed to withstand temperatures beyond the range required for methane reformers.
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Reuter-Stokes’ Flame Tracker sensor, based on Silicon Carbide (SiC) technology, improves gas turbine performance while significantly reducing maintenance requirements. The Flame Tracker's high sensitivity to longer UV wavelengths gives it a wide dynamic range and quick response time, minimizing false flameouts and improving turbine reliability.
The Flame Tracker model features these benefits:
- Provides reliable operation
- Eliminates signal flicker
- Allows full operation during the water wash cycle
- Reduces maintenance time
- Operates on low voltage
- Provides rapid response to flameout
- Produces a wide dynamic range
- Delivers 10 times the sensitivity of tube-style sensors
Our Reuter-Stokes Flame Tracker Dry FTD325 senses ultraviolet (UV) wavelengths produced by a flame and signals whether a flame condition exists. This rugged design reduces maintenance by moving sensitive electronics away from heat, thereby eliminating the need for water cooling. The Silicon Carbide (SiC) optical photodiode is designed for use with multiple fuels, low NOx combustors and steam injection.
The Flame Tracker Dry can replace any Reuter-Stokes Flame Tracker in situations in which the end user prefers to eliminate water cooling.
Ideally suited for steam methane reformers, the Flame Tracker Dry FTD325 is especially useful for top-fired systems that produce excessive heat near instrumentation, which can produce a high failure rate. Instrument housing on top of the reformer can reach 150 degrees C, whereas the FTD325 handles temperatures up to 310 degrees C. This ensures that operators always have critical information about the flame in the reformer, lessening the danger of an explosion caused by the presence of methane or syngas when the flame is extinguished.
Flame Tracker EGF is designed for use with enclosed ground flares where traditional thermocouples can fail to provide reliable, accurate information due to the system’s slow response and higher failure rate. A UV sensor’s line-of-site measurement provides a nearly instantaneous reading of the flare’s pilot status that immediately tells operators that the pilot has been extinguished.