Consider a simple flow control loop. Flow is measured by an orifice plate DP Cell. A controller adjusts the valve output to keep the flow at setpoint. The Flow rate is both the measured and controlled variable (it's a simple loop) What is the output to the valve called, it's the ___________ variable? Group of answer choices Pneumatic Variables Manipulated Calculated

What is the main reason for conducting a 3-point stroke test on the pneumatic control valves on the 3-phase separator? To ensure that the control valves are not stuck when the controllers require the control valves to open or close precisely. To ensure that the control valves can move rapidly based on the controllers' output. To check that the controllers are functioning properly. To check that the valve positioner scales are accurate.