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Common Control Loops

  Common Control Loop  1.Flow   Liquid flow processes are fast,  typically 0.5 sec response or less. Gas...

What is pH meter ? How pH meter works?

pH meter A pH meter is an electronic device used for measuring pH(acidity or alkalinity)...

Derivative Or Rate Control

Derivative Control Derivative control (also called rate control) responds to the rate of change of...

Process Control – Integral Control

Integral (or Reset) Control     Integral control (also called Reset control) can be used when unacceptable...

What is an RTD ? How RTD works ? Advantages and Disadvantages of RTD?

  RTD Resistance Temperature detectors (RTDs) are sensors used to measure temperature. Generally greater stability,accuracy and repeatability...

Process Control – Proportional Control

Proportional Control  In some processes, the fluctuations around the set point (called oscillation) may be...

Two-position control

With two-position control, the final control element may be in only one of two...

Instruments Used In Control Loop

Instruments  I hope you have a general understanding what a feedback control loop is, if not...

Basics of Feedback Control – Elements of Feedback control

Feedback ControlFeed-back control is gathering information on the controlled variable and comparing it to...

Elements of Process Control

In most processes, there are six basic elements.Process control elements are        1. Controlled variable What you...

Components of Pneumatic Control System

  Pneumatic Control System  What is pneumatic ? Pneumatic is the technology that makes use of gas...

How to use a HART Communicator (Emerson – 475)

How to calibrate a Rosemount DP (Differential Pressure) transmitter with a HART Communicator ? Steps...