Oxygen drop conversion to PPM review:
A short cut method that can be used to quickly determine oxygen sensor drop to PPM:
For each 1/10th of a percent (the smallest the oxygen sensor can read) there is a 5,000 PPM corresponding drop.
0.1% O2 drop = 5,000 PPM
0.2% O2 drop = 10,000 PPM
0.3% O2 drop = 15,000 PPM
0.4% O2 drop = 20,000 PPM