What type of process responds to a change in the controller output by moving a specific amount and establishing a new steady state?

What type of process responds to a change in the controller output by moving a specific amount and establishing a new steady state?

• A. Integrating
• B. Non-integrating
• C. Deadtime
• D. Oscillating

Answer: (B)

Non-integrating processes respond to a change in controller output with a finite, proportional shift in the process variable and then settle at a new steady state. This means a step in the controller action moves the variable to a new level and, after transients die out, stays there. If the process were integrating, that same step would keep adding up over time, so the process variable would continue to change and wouldn’t settle at a single new value. If there were deadtime, you’d see a delay before the change appears, but once the response begins it would still move to a new steady value like the non-integrating case; the defining feature is the time delay, not the steady-state behavior. If the process oscillated, you’d observe sustained or decaying fluctuations around a setpoint rather than a clean move to a single new steady state.

Non-integrating processes respond to a change in controller output with a finite, proportional shift in the process variable and then settle at a new steady state. This means a step in the controller action moves the variable to a new level and, after transients die out, stays there.

If the process were integrating, that same step would keep adding up over time, so the process variable would continue to change and wouldn’t settle at a single new value.

If there were deadtime, you’d see a delay before the change appears, but once the response begins it would still move to a new steady value like the non-integrating case; the defining feature is the time delay, not the steady-state behavior.

If the process oscillated, you’d observe sustained or decaying fluctuations around a setpoint rather than a clean move to a single new steady state.