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Conversion of g/bhp-hr to ppm


CAT Engine datasheets provide emissions data in g/bhp-hr units. I'm not exactly sure on the conversion of these units to ppm. 


Example with trivial numbers:

Engine Power: 4700 bhp

Exhaust Gas Mass Flow: 60000 lb/hr


Emissions data:

NO2: 0.8 g/bhp-hr

CO:  3.0 g/bhp-hr

THC:  6.30 g/bhp-hr

NMHC:  1.50 g/bhp-hr

CO2: 700 g/bhp-hr

Exhaust Oxygen: 12% Dry