HomeAuthorsPosts by Sundareswaran Iyalunaidu

Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe
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Instrumentation Calculators

Thermocouple Color Code and EMF Calculator for Instrumentation Engineers

Table of ContentsThermocouple Color Code and EMF Calculator for Instrumentation EngineersWhat Is a Thermocouple Color Code and EMF Calculator?Why Thermocouple Wire Color and Polarity MatterHow to Use the Thermocouple EMF CalculatorThermocouple EMF Calculation FormulaType K Thermocouple EMF Calculation ExampleHow to Interpret Thermocouple EMF Calculator...
Procedures

RTD Checking With a Multimeter: Three Tests, Resistance Calculation and Troubleshooting

Table of ContentsWhat Is an RTD and How Does It Work?Tools Required for RTD Testing and Safety PrecautionsThree Important Checks for RTD Testing With a MultimeterHow to Test an RTD With a Multimeter Step by StepPT100 Resistance Versus Temperature TableHow to Test Two Wire,...
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Valves

What is a Spool Valve? Configuration, Construction & application

Table of ContentsWhat is the spool valve?Various configurations of Spool valvesConstruction of Spool ValveTypical...
Instrumentation Questions

Mastering the Instrument Calibration Interview: Essential Questions and Answers

Table of ContentsWhat is Calibration?Why is Calibration important for Measuring Instruments?What is adjustment, and...
DIY Projects

Interfacing Potentiometer and LCD with Arduino

Table of ContentsStatement of the problemSchematic of interfacing potentiometer and LCD with ArduinoConnection diagram...
PLC

How To Write PLC Program In Keyence PLC Software?

Table of ContentsHow to write PLC Program in Keyence PLC Software? Statement of the ProblemFull...
Flow Measurement

Mastering Thermal Mass Flow Controller Troubleshooting: A Comprehensive Guide

Table of ContentsSymptom 1: Inaccurate Flow MeasurementSymptom 2: Zero Flow ReadingSymptom 3: Fluctuating Flow...
Interview Questions

Mastering DeviceNet Industrial network protocol: Top Interview Questions and Answers – Part 1

Table of ContentsWhat is DeviceNet?Who Pioneered the Development of DeviceNet?What is are DeviceNet system's...
Instrumentation Questions

Proximity Switch MCQ Challenge: Test Your Knowledge!

In this article, we'll provide proximity switch questions and answers, as well as details...
PLC

Comprehensive PLC Panel Installation and Commissioning Checklist (Downloadable)

Table of ContentsOverall System Configuration Checks:Visual Inspection Checks:Electrical Checks:Power Connection Checks:System Power Up (230V...
Instrumentation Calculators

Calibration Error Calculator – Formula, Worked Example & %FS Calculation

Table of ContentsWhat is a Calibration Error Calculator?Why Calibration Error Calculation is ImportantInputs Required...
PLC

Understanding Different types of Timer blocks used in a PLC ladder logic

Table of ContentsGraphical Representation of different Timer used in Siemens TIA PortalDifferent Timer Block...
Fire & Gas

What is Bump Testing? 

Table of ContentsMain Objective of the Bump TestImportance of Bump Testing:Important Definitions:Types of Bump...
Flow Measurement

Electromagnetic Flowmeter Troubleshooting: Identifying and Resolving Issues

Table of ContentsHow to check the flowtube of an electromagnetic flowmeter?Electromagnetic Flowmeter Troubleshooting GuideSymptom...
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Latest articles

Instrumentation Calculators

Thermocouple Color Code and EMF Calculator for Instrumentation Engineers

Table of ContentsThermocouple Color Code and EMF Calculator for Instrumentation EngineersWhat Is a Thermocouple...
Procedures

RTD Checking With a Multimeter: Three Tests, Resistance Calculation and Troubleshooting

Table of ContentsWhat Is an RTD and How Does It Work?Tools Required for RTD...
SIS/ESD

Inhibit vs Bypass in Process Plants: DCS, PLC and ESD/SIS Differences

Table of ContentsWhy Understanding Inhibit vs Bypass in Process Plants MattersWhat Is an Inhibit...
Instrumentation Calculators

Advanced Instrument Air Compressor Interlock Logic and Control Quiz for Automation and Instrumentation Professionals

Instrument Air Compressor Interlock Logic Quiz Introduction Instrument air compressors are critical utility equipment controlled...