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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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Instrumentation Calculators

Cubic Meters per Second (m³/s) to Liters per Second (L/s) Flow Unit Conversion Calculator

You can use this tool to transform Cubic Meters per Second (m³/s) measurements into...
Cybersecurity

Remote Work Cybersecurity: Common Vulnerabilities and How to Prevent Attacks

Table of ContentsWhat are Remote Access Vulnerabilities?How Attackers Exploit Remote Access VulnerabilitiesWhat are the...
Instrumentation Calculators

Control Valve Stroke Length Calculator

Control valves function through modifications to the flow passage diameter which directs signal-controlled flow...
Control Valve

Essential Control Valve Performance Parameters

Table of ContentsDead Band & BacklashActuator-Positioner DesignResponse TimeValve TrimDead TimeGainHysteresisInherent CharacteristicShaft Wind-UpValve Capacity (Cv...
Interview Questions

Cause-and-Effect Diagrams in Process Industries: Test Your Knowledge

The Cause-and-Effect Diagram in Instrumentation and Control Engineering quiz welcomes you to its examination....
Instrumentation Calculators

Easy Pull-Up Resistor Calculator for PLC Inputs in Discrete Sensor Applications

Table of ContentsWhat is a PLC?What is a Pull-Up Resistor in PLC Applications?PLC Input...
Level Measurement

Step-by-Step Guide for Troubleshooting Radar Level Transmitters

Table of ContentsHow do you troubleshoot a radar level transmitter?Problem no.1: Power Supply IssuesProblem...
Instrumentation

Complete Guide to Interpreting Instrument and Electrical Drawings for Engineers

Table of ContentsHow to Read the Hookup DrawingHow to read the data sheet How to...
Interview Questions

Industrial Communication Protocol Interview Questions and Answers

Understanding of essential communication protocols, such as DeviceNet, Profibus, Modbus, and WirelessHART, by exploring...
Interview Questions

PLC (Programmable Logic Controllers) Interview Questions and Answers

Explore a wide range of PLC interview questions covering basic concepts, safety considerations, and...
Interview Questions

Top Industrial Automation & Control System Interview Questions

Learn the principles of instrumentation and control systems by answering a wide range of...
Interview Questions

300+ Industrial Automation & Instrumentation Engineering Interview Questions

Table of ContentsBasic Instrumentation and Control Interview Questions and AnswersField Instruments Interview Questions and...
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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...