Question

Define the term time constant in process control

Answer 1

As with most things, timing is everything. Time Constant is the 'how fast' variable. It describes the speed with which the measured Process Variable (PV) responds to changes in theController Output (CO). More specifically it represents the time needed for the PV to reach 63.2% of its total and final change.

Answer 2

Answer:

Time Constant is the “how fast” variable. It describes the speed with which the measured Process Variable (PV) responds to changes in the Controller Output (CO).