First off all offset occurs on proportional control systems, it is the difference between setpoint and measurement. To know about the offset we have to...
What is Self-actuated Temperature regulators? The Self-Operating Temperature Regulator is a mechanically operated instrument intended to control system temperature by modulating heating or cooling fluid’s...
Introduction Another type of instrument commonly seen in measurement and control systems is the process switch. The purpose of a switch is to turn on and...
Introduction The aim of this unit is to describe the use of proportional, integral and derivative control. The course also introduces the newer methods of...
Introduction The override control concept is a technique by which process variables are kept with in certain limits, usually for protective purposes. Override control maintains the process in operation but within and under safer conditions. Override control To illustrate override control, consider the simple process shown in Figure A hot, saturated liquid enters a process surge...
Introduction. Process control is the automatic control of an output variable by sensing the amplitude of the output parameter from the process and comparing it...