{TAIL ~ The flow} leaving the calibration circuit 144 is coupled to the purge line 154 by {HEAD ~ a calibration circuit outlet line} 146 
{ TAIL ~ The flow } leaving the calibration circuit 144 is coupled to the purge line 154 by { HEAD ~ a calibration circuit outlet line } 146
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH