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 Questions

Safety PLC Basics in Process Industries: 25 Advanced MCQs on Functional Safety, SIL and SIS

Safety PLC Quiz Introduction Safety Programmable Logic Controllers play an important role in protecting personnel, equipment and industrial processes from hazardous operating conditions. In process industries, Safety PLCs form part of the Safety Instrumented System, executing Safety Instrumented Functions designed to reduce identified risks. Understanding...
PLC

Best AI Tools for PLC Programming: ChatGPT vs Claude vs PLC AI Agents

Table of ContentsWhat Is AI Based PLC Programming and How Does It Work?How AI Is Changing Industrial PLC ProgrammingTypes of AI Tools Available for PLC ProgrammingBest AI Tools for PLC ProgrammingAI Tools for PLC Programming Comparison: Features and CompatibilityAI Ladder Logic vs Structured Text...
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Commissioning

Pressure Gauge vs Pressure Transmitter: When Readings Don’t Match, Who Should You Trust?

Table of ContentsWhy Do Pressure Gauges and Transmitters Sometimes Disagree?Step-by-Step Troubleshooting GuideScenario 1: The...
Instrumentation Tools

Zirconia Oxygen Analyzer Nernst mV Output Online Calculator – Free Excel Tool

Zirconia Oxygen...
Engineering Standards

Key Instrumentation & Control (I&C) Standards Every Engineer Should Know

Table of ContentsWhy Standards Important in Industrial InstrumentationIEC (International Electrotechnical Commission) StandardsISO (International Organization...
Instrumentation Tools

Radar Level Transmitter Calculator for Tank Level Measurement

Table of ContentsWhy radar level transmitters are usedRadar Level Transmitter Calculator - Free Excel...
Instrumentation Questions

Advanced Quiz on Practical Troubleshooting of DO Signals in PLC for Process Industries

Digital Output (DO) signals are the backbone of PLC-based automation, controlling actuators, valves, motors,...
Engineering

Intrinsic Safety Protection Systems: Understanding Ex ia, Ex ib, and Ex ic

Table of ContentsWhat is Intrinsic Safety (IS)?Fault Tolerance and Zener Diodes in IS BarriersExia...
Field Instrumentation

4-20 mA Loop Troubleshooting with Loop Calibrators : A Practical Guide

Table of ContentsWhat is a Loop CalibratorWhy 4-20 mA Loops are Critical in Process...
HVAC

Method Statement for Installation of HVAC Dampers

Table of ContentsObjective of the HVAC Damper Installation Method StatementScope of HVAC Damper Installation...
Instrumentation Questions

Advanced Quiz on Instrument Air Compressor Systems

Instrument air compressors are the most important part of process industries. They provide clean,...
PLC

Why is RTO Used in Place of TON Timer in PLC Program?

Table of ContentsImportance of Timer Functionality in PLCsWhat are TON and RTO Timers? PLC Timers...
Engineering

How to Select the Right Wet Part Materials of Sensors in Process Industries

Table of ContentsWhy Wet Material Selection Matters in Process InstrumentationCommon Wet Materials for Sensors...
Instrumentation Tools

Air Exchange Calculation Excel Tool in HVAC Systems for Design Engineers in Process Industries 

Table of ContentsWhat is Air Exchange in HVAC Systems?Why Air Exchange is Important in...
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Instrumentation Questions

Safety PLC Basics in Process Industries: 25 Advanced MCQs on Functional Safety, SIL and SIS

Safety PLC Quiz Introduction Safety Programmable Logic Controllers play an important role in protecting personnel,...
PLC

Best AI Tools for PLC Programming: ChatGPT vs Claude vs PLC AI Agents

Table of ContentsWhat Is AI Based PLC Programming and How Does It Work?How AI...
PLC

PLC Analog Output Wiring Procedure: 4 to 20 mA and 0 to 10 V in Process Automation

Table of ContentsUnderstanding PLC Analog Output Wiring for 4 to 20 mA and 0...
Instrumentation Calculators

Thermocouple Extension Cable Selection: Types, Colour Codes, Insulation and Resistance Calculation

Table of ContentsWhat Is Thermocouple Extension Cable and Why Is Correct Selection Important?Thermocouple Extension...