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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Communication

Step by Step Procedure for Modbus Troubleshooting

Table of ContentsIntroduction'No-Response' ErrorsWhat is a Modbus poll?CRC ErrorsTroubleshooting CRC ErrorsWhat is a Modbus...
Communication

Modbus Protocol – Complete Guide for Automation Engineers

Table of ContentsWhat is Modbus?What is Modbus used for?How does Modbus work?Master and Slave...
Calibration

RTD Calibration Procedure: 8 Steps for Accurate Calibration

Table of ContentsTypes of RTD Calibration MethodsStep 1: Prepare the tools required for RTD...
How to

Converting 2-Wire and 3-Wire RTDs into 4-Wire RTDs

Table of ContentsDifferent Types of RTDsChallenges faced with spare RTDsHow to Convert 2 wire...
How to

Troubleshooting of I to P Convertor (Current to Pneumatic converter)

Table of ContentsStep by Step procedure for Troubleshooting of I to P Convertor(Current to...
Instrumentation

What is Fieldbus?

Table of ContentsWhere is Fieldbus used?Different Fieldbus Network TopologyWhat is meant by Fieldbus?What does...
PLC

How to use Different MOVE BLOCK in Siemens TIA Portal – Part 2

Table of ContentsMOVE Block’s Part 2Different Move Blocks Used In Siemens Tia PortalDeclaration of...
Instrumentation

How do you handle non-linearities in your instrumentation measurements?

Table of ContentsWhat is Non-linearity in Instrumentation?Some Common Techniques to Handle Non-linearities in Instrumentation...
DIY Projects

Automated Watering System for Plants Using Arduino UNO

Table of ContentsStatement of the ProblemSchematic of Interfacing Soil Moisture Sensor and Servo Motor...
PLC

How to use Different CONVERSION Instruction in Siemens TIA Portal 

Table of ContentsDifferent CONVERSION Instructions of PLC Ladder Logic used in Siemens TIA PortalDeclaration...
PLC

How to use Different MOV BLOCK in Siemens TIA Portal – Part 1

Table of ContentsMOVE Block's Part 1Different MOVE Blocks of PLC Ladder Logic used in...
Fire & Gas

Understanding Lower Explosive Limit (LEL)

Table of ContentsWhat is a Lower Explosive Limit (LEL)?What is a Flammable Range or...
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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...