3.2 A Proportional controller is used to control temperature within a range 60 F to 100 F. Pok controller is adjusted, so that output pressure goes from 3 psi (valve fully opened) to 15 psi (valve full closed) as the measured temperature goes from 71 F to 75 F with the setpoint held constant. 3.2.1 Find the gain and proportional band (6) 3.2.2 Now assume that proportional band of controller is changed to 75 %. Find the gain and temperature change necessary to cause a valve to go from fully open to fully close? (6)