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 Calculators

Thermowell U-Length Calculator | ASME PTC 19.3 TW-2016 Tool

Table of ContentsUse Our Free Thermowell U-Length CalculatorWhat is a Thermowell and Why It...
DCS

Understanding the Difference Between DCS Components: ES, OS, and AS

Table of ContentsWhat are the Main Components of a Distributed Control System (DCS)?Engineering Station...
Control Valve

Field Troubleshooting Guide: Control Valve Not Responding in Process Area

Table of ContentsControl Valve Not Responding - Troubleshooting FlowchartSafety First – Isolation and Preparation...
Control System

Why the Cable Shield is Grounded Only at the PLC or Control Panel Side

Table of ContentsUnderstanding Cable Shielding in Instrumentation and Control Systems1. Avoiding Ground Loops: Why...
Control Valve

What is Partial Stroke Test (PST)? A Complete Guide for Shutdown and Control Valves

Table of ContentsWhy Partial Stroke Testing is ImportantWhat is a Partial Stroke Test?Full Stroke...
SIS/ESD

Testing and Repair Deferral – IEC Guidelines, Procedure, and Best Practices

Table of ContentsIntroduction to SIS Testing and Repair DeferralWhat Is SIS Proof Testing?Why SIS...
Instrumentation Questions

Instrumentation Design Deliverables Quiz – 25 Advanced MCQs for Engineers

Welcome, engineers and designers! In the intricate world of process industries like oil &...
Instrumentation Calculators

RTD Callendar–Van Dusen Calculator | Accurate PT100, PT500, and PT1000 Conversion

Table of ContentsEmbedded Interactive CalculatorWhat is the Callendar–Van Dusen Equation?Understanding Different RTD TypesHow the...
Engineering

How to Select the Right Temperature Transmitter: A Practical Guide for Industrial Applications

Table of ContentsWhat is a Temperature Transmitter?Advantages of Using Temperature TransmittersTypes of Temperature Transmitters...
Instrumentation Questions

Advanced Control Valve Hunting Troubleshooting Quiz – Test Your Control Loop Expertise

Why Control Valve Hunting Important The Importance of Control Valve Hunting One of the most...
Instrumentation Calculators

PLC Power Supply Calculator – Complete Guide for Accurate PLC Power Sizing

Table of ContentsWhy You Need a PLC Power Supply Calculator?Understanding PLC Power Consumption CalculationKey...
PLC

Difference Between Triconex PLC and Other PLCs: A Complete Guide

Table of ContentsWhat is a Triconex PLC?What are Conventional PLCs?Key Differences Between Triconex PLC...
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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...