(a) Application. You may use a paramagnetic detection (PMD) or magnetopneumatic detection (MPD) analyzer to measure O2 concentration in raw or diluted exhaust for batch or continuous sampling. You may use O2 measurements with intake air or fuelflow measurements to calculate exhaust flow rate according to § 1065.650.
CFR 40-1065.280-2014 history
2014CFR 40-1065.280-2014 Protection of Environment. Part1065:Engine-testing procedures. Section1065.280:Paramagnetic and magnetopneumatic O2 detection analyzers.