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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Instrumentation Calculators

Advanced Instrument Air Compressor Interlock Logic and Control Quiz for Automation and Instrumentation Professionals

Instrument Air Compressor Interlock Logic Quiz Introduction Instrument air compressors are critical utility equipment controlled through PLC based sequencing, pressure instrumentation, permissives, alarms, trips and automatic standby selection. For automation and instrumentation professionals, understanding this logic is essential for DCS configuration, PLC programming, control panel...
Procedures

Galvanic Isolator Troubleshooting Procedure in an Analog Input Loop

Table of ContentsIntroduction to Galvanic Isolator TroubleshootingUnderstanding a Typical 4 to 20 mA Analog Input LoopCommon Symptoms of Galvanic Isolator ProblemsStep by Step Galvanic Isolator Troubleshooting ProcedureIndustrial Troubleshooting Case Study: Incorrect DCS Pressure ReadingSafety Precautions for Galvanic Isolator TroubleshootingGalvanic Isolator Selection and Maintenance Best...
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PLC

Which PLC is Mostly used in the Automation Industry?

Table of ContentsWhy PLCs Still Dominate the Automation WorldMost Popular PLCs in the Automation...
Engineering Standards

S84 / IEC 61511 Standard for Safety Instrumented Systems – Complete Guide

Table of ContentsIntroduction to S84 / IEC 61511What is S84 / IEC 61511 Standard?Key...
Instrumentation Calculators

Free Online PT2000 RTD Calculator – Resistance to Temperature Conversion

A Resistance Temperature Detector (RTD) is a precision sensor that changes electrical resistance with...
Engineering

Interface Level Measurement Selection Procedure – Complete 2025 Guide for Process Engineers

Table of ContentsWhat is a Liquid Interface?Understanding Emulsions (Rag Layers)Step-by-Step Interface Level Measurement Selection...
Instrumentation Questions

Advanced Control Valve Troubleshooting Quiz for Process Control Engineers

Introduction: Advanced Control Valve Troubleshooting Quiz  Troubleshooting control valves is very important for keeping processes...
Communication

Best Practices for Configuring HART Parameters in DCS Software

Table of ContentsChoose the Right Device Drivers (DD/EDD Files)Set Up the Communication ChannelsManage the...
SIS/ESD

Functional Safety Terminology – Excel Download for Industrial Automation

Table of ContentsWhat is Functional Safety?Key Functional Safety Terms and ConceptsDownload: Functional Safety Terminology...
Engineering

Cable Gland Selection for Hazardous Area Installations – Complete 2025 Guide

Table of ContentsWhat Is a Cable Gland?Why Cable Gland Selection Is Critical in Hazardous...
Instrumentation Tools

HVAC Fan Static Pressure Calculator – Accurate Airflow Resistance Estimator for Fan Sizing

Table of ContentsWhat is Fan Static Pressure in HVAC?What does the HVAC Fan Static...
Instrumentation Questions

Temperature Transmitter Troubleshooting Quiz – Advanced Diagnostics for Industrial Applications

Introduction to Temperature Transmitter Challenges Get a good look at how to fix temperature transmitters...
Engineering

Difference Between Intrinsically Safe (IS) and Non-IS Cables

Table of ContentsWhat is an Intrinsically Safe (IS) Cable?Why Intrinsically Safe Cables are used...
Engineering

Checklist for Installation of Local Instruments – Complete Guide for EPC, QA/QC and Commissioning Engineers

Table of ContentsWhy use a Local Instrument Installation Checklist?25+ Point Local Instrument Installation Checklist...
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Instrumentation Calculators

Advanced Instrument Air Compressor Interlock Logic and Control Quiz for Automation and Instrumentation Professionals

Instrument Air Compressor Interlock Logic Quiz Introduction Instrument air compressors are critical utility equipment controlled...
Procedures

Galvanic Isolator Troubleshooting Procedure in an Analog Input Loop

Table of ContentsIntroduction to Galvanic Isolator TroubleshootingUnderstanding a Typical 4 to 20 mA Analog...
Instrumentation Calculators

Pressure Transmitter Overrange Protection Calculator: Calculate Pressure Surge and Overpressure Risk

Table of ContentsWhat Is Pressure Transmitter Overrange Protection?Pressure Transmitter Overrange Protection Calculator ParametersHow to...
Instrumentation Questions

Advanced Instrument Logic Diagram Quiz for Process Control Systems in Process Industries

Instrument Logic Diagram Quiz Introduction An Instrument Logic Diagram displays the interaction of process conditions,...