More specifically, the present invention drives a wide range electrochemical polarographic oxygen sensor under {HEAD ~ a drive voltage} designed to maintain {TAIL ~ the sensor} in the current limiting range of operation 
More specifically , the present invention drives a wide range electrochemical polarographic oxygen sensor under { HEAD ~ a drive voltage } designed to maintain { TAIL ~ the sensor } in the current limiting range of operation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH