133 Product Description3.6 Selection CriteriaThe spectral sensitivity of the flame scanners determines their suitability for specific fuels.NOTICELAMTEC guarantees that the flame sensor is in perfect working order but cannot offer anyguarantees if it is used improperly. Note the specific requirements of your plant when selecting the flame sensors. We will bepleased to answer any questions you may have in relation to LAMTEC products.The following table provides an overview:*in preparation, use may only be made with LAMTEC IR fiber optic systemThe suitability of the device types may differ from that indicated in the table depending on par-ticular circumstances.Fig. 3-5 Spectrum of the flameType FiberOpticSensitivitySpectralrangein nmSightangleapproxPreferred area of application/fuelsF300K UV-4 X ++ 215 ... 360 8° • Oil• Gas• Special gases such as refi nery gases,blast furnace gases and hydrogenF300K UV-4.6 X +++ 215 ... 360 10°F300K IR-2 * ++ 850 … 1200 • Combustion chamber monitoringF300K IR-3 * ++ 1000 … 1700 60° • Oil-, gas-, wood-, coal- and dust-firedfurnaces with a high level of flue-gasrecirculation• Yellowish waste gases without UV radi-ation or with shielding of the UV spec-trum by water vapour and dustF300K IR-4 * +++ 1000 ... 2200 60°F300K UVIR-1X++ 215 ... 3608°• as F300K UV-4• as F300K IR-3(double sensor) ++ 1000 ... 1700
