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

Gas Flow Rate Conversion Calculator: Standard Cubic Feet per Minute (SCFM) to Normal Cubic Meters per Hour (Nm³/h)

Working across U.S. conventional and metric systems, engineers, plant operators, and fluid mechanics experts...
Instrumentation Questions

Test your Knowledge on Foundation Fieldbus Communication Protocol: Advanced Quiz for Instrumentation Engineers

A reliable digital, bi-directional communication protocol called Foundation Fieldbus is utilized in process automation...
Instrumentation Calculators

SCFH to Nm³/h Conversion Calculator, Formula and Gas Flow Unit Guide

Table of ContentsSCFH to Nm³/h Gas Flow Conversion CalculatorSCFH to Nm³/h Conversion CalculatorDefinition of...
Commissioning

Cold and Hot Loop Checking in Automation: Key Differences and Step-by-Step Procedures

Table of ContentsWhat is a Control Loop?What is Loop Checking?Understanding Control Loop Commissioning with...
Instrumentation Calculators

Gas Flow Unit Conversion Calculator: Cubic Meters per Hour (m³/h) to Standard Cubic Feet per Minute (SCFM)

Equipment sizing, system calibration, data reporting, and compliance depend on unit conversion between metric...
Documentation

82 Essential Drawings and Documents for Instrumentation and Control Engineers

Table of ContentsProject Engineering Stage (Design & Construction Phase)Automation Stage (DCS/PLC/SCADA Configuration)Maintenance & Commissioning...
PLC

Scaling Analog Values in Industrial Automation (PLC)

Table of ContentsKey Definitions -Scaling Analog ValuesWhat is Analog Signal Scaling?Why is Analog Scaling...
Instrumentation Calculators

Gas Flow Unit Conversion Calculator: Liters per Second (L/s) to Standard Cubic Feet per Minute (SCFM)

Accurate unit conversion is crucial in process industries, HVAC systems, and gas flow monitoring...
Instrumentation Questions

Advanced Profinet Protocol Quiz for Automation Engineers

Test your knowledge of Profinet, one of the most potent Ethernet-based communication protocols used...
PLC

Understanding NO vs NC Contacts is key for Logic Writing in PLC Programming

Table of ContentsWhat are NO and NC Contacts?Definition of NO and NC ContactsWhat is...
Engineering

Relief Valve Datasheet in Under 10 Minutes: 7 Must-Know Definitions

Table of ContentsImage 1: Sectional View of a Spring-Loaded Safety Relief ValveHow a Spring-Loaded...
Instrumentation Calculators

PSIA to PSIG Conversion Calculator

Table of ContentsUnderstanding PSIA (Pounds per Square Inch Absolute)Understanding PSIG (Pounds per Square Inch...
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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...