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 Electromagnetic Flowmeter Troubleshooting Quiz – 25 Expert Questions

Electromagnetic flowmeters are the most important tools in process industries. They monitor the volumetric...
Engineering

Avoiding Mistakes in Instrumentation Cable Tray Installation: A Guide for EPC Projects

Table of ContentsWhat is an Instrumentation Cable Tray?Common Mistakes in Instrumentation Cable Tray InstallationAdditional...
Commissioning

Pressure Gauge vs Pressure Transmitter: When Readings Don’t Match, Who Should You Trust?

Table of ContentsWhy Do Pressure Gauges and Transmitters Sometimes Disagree?Step-by-Step Troubleshooting GuideScenario 1: The...
Instrumentation Tools

Zirconia Oxygen Analyzer Nernst mV Output Online Calculator – Free Excel Tool

Zirconia Oxygen...
Engineering Standards

Key Instrumentation & Control (I&C) Standards Every Engineer Should Know

Table of ContentsWhy Standards Important in Industrial InstrumentationIEC (International Electrotechnical Commission) StandardsISO (International Organization...
Instrumentation Tools

Radar Level Transmitter Calculator for Tank Level Measurement

Table of ContentsWhy radar level transmitters are usedRadar Level Transmitter Calculator - Free Excel...
Instrumentation Questions

Advanced Quiz on Practical Troubleshooting of DO Signals in PLC for Process Industries

Digital Output (DO) signals are the backbone of PLC-based automation, controlling actuators, valves, motors,...
Engineering

Intrinsic Safety Protection Systems: Understanding Ex ia, Ex ib, and Ex ic

Table of ContentsWhat is Intrinsic Safety (IS)?Fault Tolerance and Zener Diodes in IS BarriersExia...
Field Instrumentation

4-20 mA Loop Troubleshooting with Loop Calibrators : A Practical Guide

Table of ContentsWhat is a Loop CalibratorWhy 4-20 mA Loops are Critical in Process...
HVAC

Method Statement for Installation of HVAC Dampers

Table of ContentsObjective of the HVAC Damper Installation Method StatementScope of HVAC Damper Installation...
Instrumentation Questions

Advanced Quiz on Instrument Air Compressor Systems

Instrument air compressors are the most important part of process industries. They provide clean,...
PLC

Why is RTO Used in Place of TON Timer in PLC Program?

Table of ContentsImportance of Timer Functionality in PLCsWhat are TON and RTO Timers? PLC Timers...
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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...
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...