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