5-Gas Meter Overview 

Nice video, just a few technical mistakes. Unless the Altair 5x was a PID or IR type(it wasn’t) then there is only spots for only four sensors. Your CO sensor is probably the combination CO/H2S type. If you were to open it up(don’t) left to right (arching not straight across) the Combustible, O2, Exotic toxin(HCN in your case), CO/H2S combination sensor. Secondly, the combustible sensor is a catalytic bead sensor, it is not reading methane, it is reading the temperature difference between the type A detector bead and the type B compensator bead. This displays as lel of whatever combustion gas you may be encountering. Methane is used in the calibration gases because of the instability of pentane but the scale is the pentane scale still. This video is still pretty good though. You can and I’d suggest considering turning off the fresh air setup feature as an option altogether. It can be done through the back office software. Too much confusion and not worth the hassle, just turn it off unless you have zero gas and expertise to use it correctly on scene.

Great video! I would be intrigued if there could be a demonstration of the 5-Gas Meter during an overhaul of a fire or during a live burn showing the different sensors and how in the IDLH environment the gas meter can change and sense when there could be possible combustion gases in the atmostphere.

I am still trying to figure out why the fire fighters handheld meter was beeping. Chronic sewer line blockages, no natural gas has been supplied for almost a year (line was capped after the last leak). I do smell human waste too much to be happy.