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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Engineering Standards

30+ International Standards for Control Systems: The Complete Guide for Automation & Instrumentation Engineer

Table of ContentsProgrammable Controllers and Industrial LogicIndustrial Communication and Data IntegrationFunctional Safety and Risk...
Instrumentation Calculators

Mean Time To Repair (MTTR) Calculator for Process Instrumentation Downtime Analysis

This Mean Time To Repair (MTTR) Calculator is a must-have for instrumentation and maintenance...
Instrumentation Questions

Test Your Knowledge: Instrument Logic Diagram Quiz Based on Real DCS to MCC Logic Diagram

This advanced quiz is for professionals and students who want to learn how to...
Control System

How to Read a DCS Cascade Control Loop Diagram: A Complete Guide with Example

Table of ContentsWhat is a Loop Diagram?What is Cascade Control?Purpose of a DCS Cascade...
PLC

Step-by-Step PLC Ladder Logic for Automatic Liquid Mixing Process with Interlocks

Table of ContentsWhy Liquid Mixing Needs AutomationProcess OverviewPLC I/O Address AssignmentLadder Logic Design (Step-by-Step...
Calibration

Why Calibrating your Calibrators is Critically Important: Accuracy, Compliance and ISO 17025 and NIST Traceability

Table of ContentsRole of Calibrators in Process IndustryWhy Calibrating Calibrators are Important ?Importance of...
Instrumentation Calculators

Free Online PT500 RTD Calculator: Resistance to Temperature Conversion for Instrumentation Professionals

A Resistance Temperature Detector (RTD) is a precision sensor designed to track temperature depending...
Instrumentation Questions

Advanced Quiz on RADAR Level Measurement for Process Instrumentation Engineers

With this advanced 25-question test tailored for instrumentation and automation experts, test your knowledge...
Automation

Understanding Fail-Safe Logic in Industrial Automation Systems

Table of ContentsWhy Fail-Safe Logic Matters in InstrumentationKey Terms used in this Explanation:Example 1:...
Instrumentation

Understanding the Difference Between Live Zero and Dead Zero in 4 to 20 mA Signals

Table of Contents4-20 mA Current Loop: Why It’s StandardWhy not start at 0 mA?What...
Control Valve

How to Prepare Control Valve Datasheets: A Step-by-Step Procedure for EPC Instrumentation Engineers

Table of ContentsWhat is a control valve data sheet?How to Prepare Control Valve Data...
Instrumentation Calculators

Mean Time Between Failures (MTBF) Calculator for Process Instrumentation Maintenance

Process sector engineers and maintenance experts will find excellent diagnostic and planning tool in...
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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...