Solved 15. A pneumatic flow controller (P-only) is designed
A pneumatic flow controller (P-only) is designed to maintain the flowrate of molten sulfur at 3 m/h. The span of the SP and PV signals are the same from 0.2 m /h to 5 m/h. (a) Is the flow controller a feedback or feedforward controller? Explain your answer. (2 marks) (6) Initially, the flowrate of molten sulfur was maintained at SP = PV = 3 m/h.