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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Fire & Gas

Types of Flame Detectors and Their Uses in Industrial Fire Prevention (Complete Engineer’s Guide)

Table of ContentsWhat Are Flame Detectors? (Definition, Function & Industry Importance)Why Flame Detectors Are...
SIS/ESD

SIF PFDavg / SIL Verification – Complete Guide + Online Calculator (IEC 61508 / 61511)

Table of ContentsSIF PFDavg / SIL Verification CalculatorWhat is a Safety Instrumented Function (SIF)?Understanding...
Instrumentation Questions

Troubleshooting PLC Digital Output Signals – Advanced Industrial Quiz for Automation Engineers

In process industries, where solenoids, motor starters, interposing relays, and field valves all depend...
Temperature Measurement

Thermocouple Wire vs. Thermocouple Extension Wire: The Complete Guide for Instrumentation Engineers

Table of ContentsWhat Is Thermocouple Wire? (Thermocouple-Grade Wire)Characteristics of Thermocouple WireWhat is Thermocouple Extension...
Communication

How to Properly Vent a Pressure or DP Transmitter in Liquid Service

Table of ContentsWhy Proper Venting Is Critical in Liquid ServiceStep-by-Step Procedure for Venting a...
Instrumentation Calculators

Best PID Controller Tuning Simulation Tool for Engineers

PID Tuning...
Communication

HART Transmitter Diagnostics: What Your Field Device is Telling You

Table of ContentsWhy HART Diagnostics are Essential in Process AutomationWhy HART Diagnostics Very ImportantKey...
Instrumentation Questions

Gas Turbine Start Interlocks Quiz – 25 Advanced MCQs for Engineers

Gas turbine start interlocks are essential for safe and reliable turbine operation in both...
Pressure Measurement

Why Siphon Tubes are Essential for Pressure Gauges in High-Temperature Steam Systems

Table of ContentsWhat Is a Siphon Tube in a Pressure Gauge?Why a Siphon Tube...
Temperature Measurement

Testing a Thermocouple With a Multimeter: A Complete Field Guide for Instrumentation Engineers

Table of ContentsWhy Thermocouple Testing Matters in Industrial and Domestic Heating SystemsHow a Thermocouple...
FAT Activities

Electromagnetic Flow Meter Inspection and Test Plan (ITP): Complete EPC Guide

Table of ContentsIntroduction to Electromagnetic Flow Meter Inspection and Test PlanWhy an Electromagnetic Flow...
Instrumentation Calculators

Open Tank Level Transmitter Calculator – Complete Guide for EPC Instrumentation Engineers

Open Tank...
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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...