A computer is often used as part of a control system. The input data is typically from the operator’s commands…
Centralised control is usually carried out via computer software, having as inputs all the available sensors and producing signals for…
An actuator is normally controlled by the controller. The actuator, in turn, changes the output of an automated process. The…
In a process plant, we typically have a number of control goals that require different algorithms and types of information…
The function of the manipulating device is to influence the process variable. Its main purpose is to regulate a mass…
Analog signals pass continuously through a full range of values for example a measuring device converts the process variable (PV),…
When steam-heated reboilers are used in distillation columns and the heating medium is steam, a flow control loop for the…
Let’s consider the figure below: Figure 1.0 Typical single-fuel cross-limited combustion control system In the system above, the output of…
Let’s consider the industrial process control system shown below: Figure 1.1 Industrial Process Temperature Control System The requirement is to…
Let’s assume we are measuring flow by differential-creating primary device for example an orifice plate and a DP cell as…
