Model FL3111HT is designed for gas turbine and similar high temperature applications. The flame detector’s operating temperature is rated to 257°F (125°C). The instrument includes an ultraviolet (UV) flame detector and electronic components that operate with very low power consumption to reduce detector self-heating. The unit senses unwanted flames only in the UV spectral range, which allows it to recognize a flame within 100 ms. For reliability, the design incorporates continuous optical path monitoring that self-checks the optical path integrity and electronics once every minute to ensure proper operation.

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