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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Instrumentation Calculators

Instrumentation Panel Heat Load Calculator – Complete Engineering Guide for Panel Cooling Design

Table of ContentsCritical Role of Heat Load Calculation in Instrumentation PanelsInstrumentation Panel Heat Load...
Valves

Understanding 3/2-Way vs 5/2-Way Solenoid Valves (SOVs)

Table of ContentsWhy solenoid valves are considered final control elementsWhat Is a 3/2-Way Solenoid...
SCADA

SCADA Communication Problems and How to Fix Them – A Complete Troubleshooting Guide for Automation Engineers

Table of ContentsSCADA Communication Problems in Industrial AutomationWhy SCADA Communication Problems Occur in Industrial...
Control System

Alarm & Trip Setpoint List in Instrumentation Engineering: The Most Critical Document for Plant Safety

Table of ContentsAlarm & Trip Setpoint Lists in Process PlantsWhat Is an Alarm &...
Automation

Logic Gates Explained with Truth Table Animated Simulator (PLC & Instrumentation Guide)

Table of ContentsWhat Is a Logic Gate?Why Use a Gate Logic Animated Simulator?Who Should...
SIS/ESD

What is SIS, SIF and SIL? An In-Depth Guide to Functional Safety in Process Industries

Table of ContentsFunctional Safety and IEC StandardsWhy SIS, SIF, and SIL are Critical for...
Instrumentation Questions

Three Element Drum Level Control System – Advanced Quiz for Instrumentation Engineers

Introduction to the Three Element Drum Level Control Quiz A Three Element Drum Level Control...
Engineering Standards

What Cables to Use in Ex Zones: Complete Guide for Instrumentation & Control Engineers

Table of ContentsUnderstanding Cable Requirements in Hazardous (Ex) ZonesATEX Cable Requirements for Hazardous Areas...
Checklist

Checklist for Best Radar Level Measurement & Control System Performance

Table of ContentsDesign and Selection Checklist for Radar Level TransmittersInstallation Checklist for Optimal Radar...
Instrumentation Calculators

Wet-Leg Level Calculation for DP Transmitters: Complete Guide for Instrumentation Design Engineers

DP Wet-Leg Level Calculator – Enhanced ...
Automation

Heartbeat Technology in Process Instrumentation – Complete Working, Diagnostics, Verification & Predictive Maintenance Guide

Table of ContentsHeartbeat Technology in Smart InstrumentationThree Core Pillars of Heartbeat TechnologyWorking Principle of...
Instrumentation Questions

Advanced Boiler Burner Control System Troubleshooting Quiz

Why Burner Management System (BMS) Troubleshooting Matters In process plants, boiler burner control systems are...
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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...