{HEAD ~ The controller} varies the output pressure of the pressure source, e.g. a rotary compressor, based, at least in part, on {TAIL ~ the head position information} provided by the head position sensor 
{ HEAD ~ The controller } varies the output pressure of the pressure source , e.g. a rotary compressor , based , at least in part , on { TAIL ~ the head position information } provided by the head position sensor
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH