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. 2021 Nov 9;24(2):536–551. doi: 10.1177/14680874211055546

Table 1.

Accuracy of emissions measurement system.55

Gas Maximum Detection level Resolution Accuracy
NOx 10,000 ppm 0.1 ppm 0.1 ppm 1% of reading
uHC 5% 0.04 ppm 0.1 ppm 1% of reading
CO (low) 2500 ppm 0.1ppm 0.1 ppm 1% of reading
CO (high) 10% 0.1% 0.1% 1% of reading
CO2 18% 0.1% 0.1% 1% of reading
O2 25% 0.1% 0.1% 1% of reading