A valve is a mechanical device that controls the flow of fluid and pressure within a system or process. A…
Analog signals pass continuously through a full range of values for example a measuring device converts the process variable (PV),…
Consider the following figure illustrating a position control system employing a microprocessor-based controller with parallel ports: Figure 1.0 Microprocessor-based controller…
A microprocessor by itself is not a computer. To be functional, the microprocessor must be connected to other ICs that…
The varactor also termed to as varicap, is a diode that behaves like a variable capacitor, with the PN junction…
This is a variable-reluctance transducer used to detect small motions, giving output signals as low as 0.01° of changes in…
When steam-heated reboilers are used in distillation columns and the heating medium is steam, a flow control loop for the…
Sercos is a short form for serial real-time communication system; a digital automation bus that interconnects motion controls, drives, I/O,…
If a constriction is placed in a pipe as shown in figure 1 below, the flow must be higher through…
Let’s consider an illustration of a typical three-phase direct-on-line (DOL) starter below: Figure 1 Three-phase direct-on-line starter When the start…
