The output measurement signal from flowmeter 3 feeds into {HEAD ~ controller} 5 and {TAIL ~ controller} 10 
The output measurement signal from flowmeter 3 feeds into { HEAD ~ controller } 5 and { TAIL ~ controller } 10
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH