Accordingly, {HEAD ~ a particular form} of proportional control is achieved by the on off controller in that {TAIL ~ the secondary valve} opens for a period of time within the cycle period which is proportional to the reactor pressure deviation from the second set point 
Accordingly , { HEAD ~ a particular form } of proportional control is achieved by the on off controller in that { TAIL ~ the secondary valve } opens for a period of time within the cycle period which is proportional to the reactor pressure deviation from the second set point
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH