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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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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,...
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 in Process Automation?What Is a Bypass in Process Automation?What Is Override Control in Process Automation?Inhibit vs Bypass in DCS, PLC and SISHow Inhibit and Bypass Work in Control LogicInhibit and...
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Interview Questions

Essential Skills & Interview Questions for instrumentation and Control Engineers & Technicians

Interview Questions for Control Engineers / Technicians Prepare for interviews with questions tailored for instrumentation...
Interview Questions

Project Engineering (EPC) Interview Questions & Answers

Project Engineering (EPC) Interview Questions & Answers Unlock valuable insights with top interview questions covering...
Interview Questions

Electrical Interview Questions and Answers

Get ready for electrical engineering interviews with questions spanning various topics, including basic concepts,...
Interview Questions

Essential Control Valve Interview Questions

Enhance your knowledge of control valves with interview questions covering installation, maintenance, troubleshooting, directional...
PLC

PLC Hardware: Modules,Types, Functions, and Applications

Table of ContentsTypes of PLC HardwareCompact PLC (Fixed PLC)Modular PLCRack-Mounted PLCWhat are the different...
Instrumentation Questions

Instrumentation I/O Database Quiz

In process industries instrumentation functions as a critical element that delivers precise operations together...
Control Valve

How to Properly Size Control Valves for Maximum Efficiency?

Table of ContentsCharacteristics of Correctly Sized, Undersized, and Oversized Control ValvesImportance of Control Valve...
Cybersecurity

Cybersecurity Basics: Types, Threats, and Protection Tips

Table of ContentsWhat is cybersecurity?Types of Cyber SecurityEvolution of Cybersecurity ThreatsTop Emerging Cybersecurity ThreatsCommon...
Instrumentation Calculators

Control Valve Sizing Calculation Worksheet for Critical and Sub-Critical Flow: Excel Tool – Liquid Application

The Control Valve Sizing Calculation Worksheet serves engineering and professional users who perform control...
Instrumentation Calculators

Accurate Measurement Calculators for Engineers

A collection of precision calculators enables industrial performance optimization through their ability to deliver...
Instrumentation Calculators

20+ Essential Third-Party Instrumentation Calculators for Engineers

A group of advanced third-party instrumentation tools exists to help users execute complex calculations...
Instrumentation Questions

Instrumentation and Control System Interview Questions and Answers

Table of ContentsPLC (Programmable Logic Controllers) Interview Questions and AnswersOil and Gas Instrumentation Interview...
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Latest articles

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...
Procedures

Galvanic Isolator Troubleshooting Procedure in an Analog Input Loop

Table of ContentsIntroduction to Galvanic Isolator TroubleshootingUnderstanding a Typical 4 to 20 mA Analog...