The pressure sensor receives air from {HEAD ~ a restrictor} in the supply line and is operative to maintain the pressure in the supply line substantially equal to {TAIL ~ the pressure} surrounding the sensor 
The pressure sensor receives air from { HEAD ~ a restrictor } in the supply line and is operative to maintain the pressure in the supply line substantially equal to { TAIL ~ the pressure } surrounding the sensor
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH