{TAIL ~ first pressure transducer} means for measuring {HEAD ~ the pressure} in the first accumulator chamber and providing an output signal indicative thereof 
{ TAIL ~ first pressure transducer } means for measuring { HEAD ~ the pressure } in the first accumulator chamber and providing an output signal indicative thereof
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH