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

How to Select the Right Wet Part Materials of Sensors in Process Industries

Table of ContentsWhy Wet Material Selection Matters in Process InstrumentationCommon Wet Materials for Sensors...
Instrumentation Tools

Air Exchange Calculation Excel Tool in HVAC Systems for Design Engineers in Process Industries 

Table of ContentsWhat is Air Exchange in HVAC Systems?Why Air Exchange is Important in...
Level Measurement

Hybrid Level Measurement: Capacitance + Guided Wave Radar (GWR) Technology

Table of ContentsWhat is Hybrid Level Measurement?Explaining the Hybrid Level Measurement DiagramCapacitance Principle in...
Instrumentation Calculators

RTD Class C Tolerance Calculator – IEC 60751 Standard Accuracy

Table of ContentsWhat is RTD Accuracy Class According to IEC 60751?IEC 60751 Accuracy Class...
PLC

Critical Flaw in Rockwell ControlLogix CVE-2024-6242 – Trusted Slot Bypass Vulnerability

Table of ContentsBackground on Rockwell ControlLogix 1756 DevicesWhat is the Trusted Slot Feature?The Vulnerability...
Commissioning

Commissioning Procedure for Differential Pressure Transmitters in Pressurized Boiler Steam Drums

Table of ContentsImportance of Accurate Boiler Drum Level MeasurementComponents in a DP Transmitter Installation...
Instrumentation Questions

Cybersecurity in PLC Systems – Advanced 25 MCQ Quiz

Cybersecurity in PLC systems is now one of the most important problems in the...
Engineering

Thermowell Selection Procedure – Complete Guide for EPC design Engineers

Table of ContentsWhy Thermowells Are EssentialBasic Components of a ThermowellTypes of ThermowellsStep-by-Step Thermowell Selection...
Automation

Emerging and Future Concepts in Functional Safety: AI, Digital Twins and Industry 4.0

Table of Contents1. Convergence of Cybersecurity and Functional Safety2. Dynamic Safety Instrumented Systems (DSIS)3....
Instrumentation Calculators

Failure Rate (λ) Calculator for Process Instrumentation and Industrial Maintenance

Table of ContentsWhat Is Failure Rate (λ) in Reliability Engineering?Failure Rate in Predictive Maintenance...
Automation

Fieldbus Intrinsically Safe Concept (FISCO) Model for Foundation Fieldbus H1 and Profibus PA

Table of ContentsHazardous Area - Safe Area IS LoopWhat is the FISCO Model?Fieldbus Network...
Instrumentation Questions

Zero Elevation Level Measurement Troubleshooting Quiz for Process Industries (Advanced 25 MCQs with Answers)

In closed tank differential pressure (DP) transmitter applications, especially when using wet leg arrangements,...
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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...