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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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...
Instrumentation Questions

Advanced Interface Leveltrol Troubleshooting Quiz

Displacer-based Leveltrol devices are very important for keeping stable interface levels in complex process...
PLC

Running Inspection Checklist of PLC Components in Control Panels

Table of ContentsStep-by-Step PLC Panel Running Inspection and Testing ProcedureSection 1: General Visual and...
Communication

Difference Between Fieldbus and HART Communication Protocols: Complete Comparison Guide for Process Automation Engineers

Table of ContentsWhy Understanding Fieldbus and HART Matters in Industrial AutomationOverview of HART Communication...
Instrumentation Calculators

Differential Pressure to Flow Calculator – Complete Interactive Tool for Process Engineers

Differential Pressure...
Communication

Twisted Pair Cable in Industrial Signal Transmission: The Essential Guide for 4-20 mA and RS 485 Systems

Table of ContentsIntroduction to Twisted Pair Cables in Industrial SystemsUnderstanding Electrical Noise in Industrial...
Instrumentation Questions

Advanced Quiz on Thermocouple Troubleshooting in Process Area

Thermocouples are the most important tool for measuring temperature in process industries. However, when...
Communication

Foundation Fieldbus Installation and Best Practices – Complete Guide for EPC and Maintenance Engineers

Table of ContentsWhat is Foundation Fieldbus (FF)?Understanding Foundation Fieldbus ArchitectureFoundation Fieldbus Cable Selection Guide...
Fire & Gas

Types of Fire and Gas Detectors – Working Principles and Industrial Applications

Table of ContentsIntroduction to Fire and Gas Detection SystemsClassification of Fire and Gas DetectorsGas...
Communication

Explained: The Four Main Process Variables (PV, SV, TV, QV) in HART Transmitters – Complete Guide for Instrument Engineers

Table of ContentsWhat are Process Variables in HART Devices?1. Primary Variable (PV)2. Secondary Variable...
Instrumentation Calculators

Thermocouple Voltage ↔ Temperature Calculator

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Latest articles

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...