MSA’s SIL 2-certified PrimaX IR Combustible Gas Monitor withstands the most challenging environmental conditions. PrimaX IR Dual Source redundancy provides uninterrupted monitoring should a source failure occur. Obscurations due to environmental conditions are minimized. Maximized optics provide maximum signal and extraordinary stability. Unique environmental guard with patented clamshell design provides convenient installation in tight locations. For more information about MSA’s PrimaX IR Combustible Gas Monitor, please visit