What is Triple IR Flame Detection – IR3?
The IR3 detector utilizes a combination of three IR sensors. One covers the typical CO2 flame emission spectral band, and the two other sensors cover different adjacent specially selected spectral bands, where black body emitters and background radiation are interfering. While the CO2 emission band sensor is responsible for the detection of the flame radiation, the other sensors are sensitive to all other non-fire radiation sources. The Triple IR employs dedicated algorithms processed by a microprocessor analyzing radiation intensity, ratios, correlations, threshold values, and flickering signals obtained from the three sensors. The spectrum of flame radiation measured by the detector is influenced by the distance between the detector and the fire and by the concentration of the CO2 gas in the atmosphere. Two factors that limit the detection range of the dual IR detectors have been addressed by the Triple IR (IR3) Technology: – The fire’s radiation intensity around the 4.3micron peak s
