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

Preparation of IO List Documentation in EPC Engineering in Process Industries: Advanced Quiz for Instrumentation and Control Engineers

Why IO List Documentation Matters in EPC Engineering Projects  The IO list is the heart of instrumentation engineering in EPC projects since it integrates field instruments, signal kinds, control systems and execution documentation in a single structured project reference. If the IO list is not...
Procedures

Faulty Thermocouple Replacement Procedure in Process Area: Complete Step-by-Step Field Guide for Instrumentation Engineers

Table of ContentsIntroduction to Thermocouple Replacement in Process AreasPurpose and Scope of the Thermocouple Replacement ProcedureWhen a Thermocouple Should Be ReplacedCommon Signs of a Faulty ThermocoupleHow to Confirm the Fault Before ReplacementPre Job Planning and Work PreparationResponsibilities of Operations and Instrumentation PersonnelReview of P&ID,...
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Flow Measurement

Magnetic Flowmeter vs. Turbine Flowmeter – Complete 2025 Comparison Guide

Table of ContentsOverview: Magnetic Flowmeter (Magmeter) & Turbine FlowmeterMagnetic Flowmeter vs Turbine Flowmeter -...
Instrumentation Tools

Fire Alarm Battery Size Calculator – Professional Tool for Accurate Backup Power Sizing

Table of ContentsWhat is a Fire Alarm Battery?Why Backup Power is Critical in Fire...
Instrumentation Questions

DCS Cascade Control Loop Instrumentation Quiz – 25 Expert-Level Questions

The DCS Cascade Control Loop Instrumentation Quiz is intended for professionals with extensive experience...
PLC

PLC Program for Motor Starter with Low-Level Switch Interlock

Table of ContentsWhy Motor Starters Need ProtectionImportance of Low-Level Interlock in Pump ApplicationsField Layout...
Field Instrumentation

Why 24VDC is Not Always 24VDC – Real-World Troubleshooting for Analog and Digital Signals

Table of ContentsTop 10 Field-Proven Causes Behind 24VDC FailuresCause 1. The Illusion of No-Load...
Checklist

25-Point  Instrumentation Junction Box (JB) Wiring and Termination Checklist for EPC Engineers

Table of ContentsWhat is an Instrumentation JB?25-Point  Instrumentation Junction Box (JB) Wiring and Termination...
Instrumentation Calculators

HVAC Circular Duct Size Calculator – Accurate Airflow and Diameter Sizing Tool

One of the most important things for an HVAC system to work well is...
Instrumentation Questions

Advanced Quiz on Control System Standards (IEC, ISA, ANSI) for Process Industries

Standards for control systems make ensuring that process industries are safe, consistent, and efficient....
Engineering

Level Transmitter Selection Checklist for EPC Engineers – Step-by-Step Guide

Table of ContentsHow to choose a level transmitter?Step 1: Evaluate the Process MediumStep 2:...
Documentation

PLC System Documentation Guide: Essential Records for Industrial Automation

Table of ContentsWhat is PLC System Documentation?Why is PLC Documentation Important?Key Components of PLC...
P&ID

11 Best P&ID Software Tools for Process Design Engineers in 2025

Table of ContentsBest P&ID Software Tools for Process Engineers in 20251. AutoCAD P&ID (Autodesk)2....
Instrumentation Calculators

Mean Time To Failure (MTTF) Calculator for Instrumentation Reliability Assessment

This Mean Time To Failure (MTTF) Calculator is a powerful tool for instrumentation engineers,...
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Instrumentation Questions

Preparation of IO List Documentation in EPC Engineering in Process Industries: Advanced Quiz for Instrumentation and Control Engineers

Why IO List Documentation Matters in EPC Engineering Projects  The IO list is the heart...
Procedures

Faulty Thermocouple Replacement Procedure in Process Area: Complete Step-by-Step Field Guide for Instrumentation Engineers

Table of ContentsIntroduction to Thermocouple Replacement in Process AreasPurpose and Scope of the Thermocouple...
Documentation

Instrument Index Generator for EPC Instrumentation Projects

Table of ContentsInstrument Index Generator for Efficient Instrumentation Documentation ManagementWhat is an Instrument Index...
Instrumentation Calculators

Control Valve Flow Characteristic Calculator: Linear, Equal Percentage, and Quick Opening Guide

Table of ContentsWhy Use a Control Valve Flow Characteristic Calculator? What Is a Control Valve...