(a) Application. Use a nondispersive infrared (NDIR) analyzer to measure CO and CO2 concentrations in raw or diluted exhaust for either batch or continuous sampling.
CFR 40-1065.250-2014 history
2014CFR 40-1065.250-2014 Protection of Environment. Part1065:Engine-testing procedures. Section1065.250:Nondispersive infrared analyzer.