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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Control Valve

Control Valve Passing Even When Fully Closed: Causes, Symptoms, Troubleshooting and Solutions

Table of ContentsUnderstanding Control Valve Passing and Why It HappensWhat Does It Mean When a Control Valve Is Passing?How a Control Valve Should Close Under Normal ConditionsCommon Symptoms of a Passing Control ValveMajor Causes of Control Valve PassingControl Valve Shutoff Performance by Valve TypeHow...
Instrumentation Calculators

Instrument Range Calculator | Calculate Span, Rangeability, Turndown Ratio & Calibration Range

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Instrumentation Questions

Advanced Interface Leveltrol Troubleshooting Quiz

Displacer-based Leveltrol devices are very important for keeping stable interface levels in complex process...
PLC

Running Inspection Checklist of PLC Components in Control Panels

Table of ContentsStep-by-Step PLC Panel Running Inspection and Testing ProcedureSection 1: General Visual and...
Communication

Difference Between Fieldbus and HART Communication Protocols: Complete Comparison Guide for Process Automation Engineers

Table of ContentsWhy Understanding Fieldbus and HART Matters in Industrial AutomationOverview of HART Communication...
Instrumentation Calculators

Differential Pressure to Flow Calculator – Complete Interactive Tool for Process Engineers

Differential Pressure...
Communication

Twisted Pair Cable in Industrial Signal Transmission: The Essential Guide for 4-20 mA and RS 485 Systems

Table of ContentsIntroduction to Twisted Pair Cables in Industrial SystemsUnderstanding Electrical Noise in Industrial...
Instrumentation Questions

Advanced Quiz on Thermocouple Troubleshooting in Process Area

Thermocouples are the most important tool for measuring temperature in process industries. However, when...
Communication

Foundation Fieldbus Installation and Best Practices – Complete Guide for EPC and Maintenance Engineers

Table of ContentsWhat is Foundation Fieldbus (FF)?Understanding Foundation Fieldbus ArchitectureFoundation Fieldbus Cable Selection Guide...
Fire & Gas

Types of Fire and Gas Detectors – Working Principles and Industrial Applications

Table of ContentsIntroduction to Fire and Gas Detection SystemsClassification of Fire and Gas DetectorsGas...
Communication

Explained: The Four Main Process Variables (PV, SV, TV, QV) in HART Transmitters – Complete Guide for Instrument Engineers

Table of ContentsWhat are Process Variables in HART Devices?1. Primary Variable (PV)2. Secondary Variable...
Instrumentation Calculators

Thermocouple Voltage ↔ Temperature Calculator

Instrumentation Questions

Burner Control System Components – Advanced Quiz for Instrumentation Engineers

Introduction to Burner Control Systems Why Burner Management Systems (BMS) Matter in Process Industries In environments...
Control System

PLC vs DCS – Which One Should you Choose for your Automation System?

Table of ContentsWhat is a PLC (Programmable Logic Controller)?What is a DCS (Distributed Control...
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Latest articles

Control Valve

Control Valve Passing Even When Fully Closed: Causes, Symptoms, Troubleshooting and Solutions

Table of ContentsUnderstanding Control Valve Passing and Why It HappensWhat Does It Mean When...
Instrumentation Calculators

Instrument Range Calculator | Calculate Span, Rangeability, Turndown Ratio & Calibration Range

<!-- Google Fonts (safe to keep as a inside a WordPress "Custom HTML"...
Communication

Profibus PA Communication Problems: Causes, Symptoms and Troubleshooting Guide

Table of ContentsOverview of Profibus PA Communication Challenges What is Profibus PA Communication?Definition of Profibus...
Engineering

FAT vs SAT vs SIT: Three Critical Tests That Determine Whether Your Plant Is Truly Ready for Startup

Table of ContentsIntroductionPurpose of Factory Acceptance TestingFactory Acceptance Test ObjectivesFactory Acceptance Test ObjectivesPLC FAT...