What are the Errors in measurement ?
Errors in measurement Errors in measurement refer to the difference between the measured value and the true value of a quantity being measured. There are different types of errors in …
Control System
What is Automatic Process Control ?
The primary purpose of process instrumentation is automatic control of operating process units. Without process control, it is impossible and impractical to operate process units. Their large size and complex …
Feedforward Control | Feedforward | Feedforward control system
In a simple closed loop control system, corrective action takes place after the disturbance has affected the controlled condition and this is termed feedback. On the other hand, in a …
Hydraulic Control System
In a hydraulic control system ,pressurized and filtered clean oil is supplied to the controlling Element . As the value of the measured variable changes ,the hydraulic output of the …
Comparison of Pneumatic and Electronic Control Systems
Feature Pneumatic Electronic 1. Transmission distance Limited to about 100 meters Practically unlimited 2. Reliability Superior if energized with clean air. Excellent under eviromental condition 3. Operation in …
Controllers | Configuration of a controller
Instrumentation Instruments & automatic controllers are generally grouped at one location near the processing unit or manufacturing operation which they serve. Actually the fundamental purpose of Instrumentation is control of …
Electronic Control System
Essentially, whole of the electronics world is based on three major components viz. resistance, capacitance and inductance. Every electronic circuit whether it is simple potential divider network or a complicated …
Pneumatic Control System
In a pneumatic control system, compressed air is supplied to the controlling element. As the value of the measured variable changes, the pneumatic output of the controlling element changes with …
Control System | Type of Control Loop | Open loop | Close Loop
Necessarily, it follows that when we think of a control system, we have to associate with it a standard or set value of a variable. A method of measuring the …
Backup of DCS | Delta V | Emersion DCS
This Article establishes the minimum guidelines for Instrumentation Engineer to take the backup of DCS. This document also enables E&I technicians to do primary level configuration and troubleshooting. Scope and …