Spectrex Inc.'s explosion-proof SharpEye 40/40 series Optical Flame Detectors are specifically designed to protect bio-fuels facilities. The flame detectors provide protection against hydrocarbon-based and water vapors combustion products types of fuel and gas fires, with models that feature enhanced sensitivity to ethanol and other alcohol derivates. The Bio-Fuels industry includes biodiesel (synthetic diesel) plants that produce diesel fuel from biomass, ethanol fuels produced from grains, cellulose and sugar cane, renewable diesel produced from thermo-depolymerized oils and fats, and others.Features include sealed electronics to protect the integrity of the unit when opened for installation or maintenance, a heated window to prevent condensation in the humid environments and HART capabilities for digital communications.