The output signals from transducer are then used by {HEAD ~ data processing unit} to compute the concentrations of {TAIL ~ propane}, n butane gases and C5 + gases in the sample 
The output signals from transducer are then used by { HEAD ~ data processing unit } to compute the concentrations of { TAIL ~ propane } , n butane gases and C5 + gases in the sample
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH