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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Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure Switch Operating PrinciplePressure Switch Hysteresis. Set Point and Reset PointNormally Open and Normally Closed Pressure Switch ContactsHydraulic Pressure Switch vs Pressure TransmitterCommon Hydraulic Pressure Switch Problems and SymptomsPressure Switch Not...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable PLC interlock systems to protect personnel, equipment, and production. Troubleshooting PLC interlocks requires strong knowledge of process control, field instrumentation, PLC diagnostics, permissive logic, shutdown sequences, and industrial automation practices....
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PLC

How to Increase PLC Speed: 7 Optimization Tips + Advanced Programming Guide

Table of Contents1. Optimize PLC Code Structure: Reduce Unnecessary Loops2. Use Interrupts Wisely: A...
Engineering

Intrinsically Safe Cables for ATEX Zones – Complete Checklist for EPC Engineers

Table of ContentsWhat Is an Intrinsically Safe Cable?Characteristics of Intrinsically Safe CablesUnderstanding ATEX and...
Commissioning

Loop Check vs Functional Test in Instrumentation Commissioning

Table of ContentsWhy the Difference Between Loop Check and Functional Test MattersWhat is Loop...
Instrumentation Calculators

Mean Time To Detect (MTTD) Calculator for Process Instrumentation Fault Discovery

Table of ContentsWhy MTTD Calculation is Important in the Process IndustryWhat is MTTD (Mean...
Instrumentation Questions

Advanced Quiz on Intrinsic Safety Instrumentation Circuits in Oil & Gas Process Industries

Introduction: Advanced Quiz on Intrinsic Safety Instrumentation Circuits In process sectors where explosive atmospheres are...
Instrumentation Calculators

Gas Flow Unit Conversion Calculator: Standard Cubic Feet per Hour (SCFH) to Standard Cubic Feet per Minute (SCFM)

This SCFH to SCFM Conversion Calculator is a quick and easy way to change...
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...
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Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable...
Instrumentation Calculators

Capacitance Level Sensor Calculator: Calculate Liquid Level and Capacitance for Instrumentation Applications

Capacitance Level Sensor Calculator :root{ --bg:#F2F5F3; --panel:#FFFFFF; ...
SIS/ESD

How are ESD Signals Selected? Complete ESD Signal Selection Guide

Table of ContentsWhat Is an ESD Signal in an Emergency Shutdown System?Why Is ESD...