Instruments I hope you have a general understanding what a feedback control loop is, if not please refer the following article – Feedback Control Loop Sensors You have read that a sensor monitors and measures what is happening in the process. Examples of sensors include: thermocouples, floats, limit switches, pressure switches, pressure switches, moisture meters, and …
Feedback Control Feed-back control is gathering information on the controlled variable and comparing it to the set point; making a decision based on that comparison; and taking action to eliminate any differences between the controlled variable and the and the set point In feedback control, there is a constant flow of information in a closed …
Basics of Feedback Control – Elements of Feedback control Read More »
In most processes, there are six basic elements.Process control elements are    1. Controlled variable What you want to control (temperature pressure, level, flow rat, dimensions, position, etc.)  2. Measured variable What you observe in order to determine the actual condition of the controlled variable  In most cases, you measure the controlled …
Pneumatic Control System What is pneumatic ? Pneumatic is the technology that makes use of gas or pressurized air. Components of Pneumatic control system 1.Directional control Valves  These are functional valves used in logic implementation. Divided according to the number of ports / passages available and number of valve positions 2.Two Way Valves …
How to calibrate a Rosemount DP (Differential Pressure) transmitter with a HART Communicator ? Steps involved in the calibration 1.Connect the DP transmitter (Rosemount) to a power supply 2.Connect the HART 3.Connect test pressure gauge 4.Calibrate zero and span of transmitter  1.Connecting the power supply to DP transmitter : In order for you to be …
Unit Conversion tool built by automationforum.in made for Instrumentation and Automation Engineers releases started rolling out updates. The latest updates includes a calibration tool too. Updates – 0.1.0 Removed Ads – Courtesy for automationforum.in users who sends feedback. History – Option to save and view conversions done. Calibration – x – y range to percentage New …
PID Loop tuning is one of the important activity carried out by instrumentation or process engineers  during plant startup and day to day instrumentation maintenance activities. Several PID loop tuning spread sheets are available in the internet.We are discussing about some of the best PID loop tuning spreadsheet. PID Loop Tuning Spreadsheet by Engineers-Excel .com …
InstaConvert is an android application to convert Instrumentation Standard Signals and Process variables.InstaConvert is absolutely free. You can download it from Google Play Store. https://play.google.com/store/apps/details?id=com.infohe.simplyconvert&hl=en Following parameters can be converted with InstaConvert Instrumentation Standard Signals 4-20 ma to Percentage3-15 psi to Percentage0-20 ma to Percentage0-25 ma to Percentage Process Variables (Unit Converter)TemperaturePressure Other Parameters LengthMassSpeedVolumeAreaFuel …
Working Principle Of Bourdon Gauge If a tube having oval cross section is subjected to pressure its cross section tends to change from oval to circular. Construction of a Bordon Gauge Bourdon tube gauges consist of a circular tube. One end of the tube is fixed while the other end is free to undergo elastic deformation under …
Pressure Measurement – Bourdon Gauge -Working Principle Advantages and Disadvantaged Read More »
 Working Principle of Differential Pressure Flow Measurement Flow measurements are essential to  run a plant efficiently and safely.There are no real flow measurement technologies available including differential pressure flow also known as DP flow which utilizes a variety of measurement instruments. DP flow is measured with the combination a primary element and a secondary …