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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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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

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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...
Instrumentation Questions

Advanced DCS Documentation Quiz for Process Industries with Answers and Explanations

What is DCS Documentation and Why is it Critical in Process Industries? In the process...
PLC

PLC Troubleshooting Remote IO Rack Communication Failure Complete Troubleshooting Guide for Industrial Automation Engineers

Table of ContentsIntroduction to PLC Remote IO Rack Communication FailureWhat is PLC Remote IO...
Instrumentation Calculators

Junction Box Load Calculator

Table of ContentsCalculate Junction Box Load, Terminal Requirement and Enclosure Size AccuratelyWhat is a...
Instrumentation Calculators

Air Consumption Calculator for Pneumatic Control Valves, Actuators and Instrument Air System Sizing

Air Consumption Calculator for Pneumatic Control Valves | AutomationForum.co * { box-sizing: border-box; margin: 0;...
Procedures

Radar Level Transmitter False Echo Troubleshooting Guide: Causes, Symptoms, Echo Curve Analysis and Fixes

Table of ContentsRadar Level Transmitter False Echo Troubleshooting IntroductionWhat Is a Radar Level Transmitter?Why...
Instrumentation Calculators

Instrument Cable Gland Selector Calculator Guide

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Procedures

Why Is My Pressure Transmitter Showing 22 mA? Complete Troubleshooting Guide for Instrument Engineers

Table of ContentsIntroduction to Pressure Transmitter 22 mA Fault SignalsWhy Is My Pressure Transmitter...
Instrumentation Questions

Control System Basics Quiz for Process Industries: 25 Advanced MCQs for PLC, DCS, SCADA and Feedback Control

Quiz Introduction to Control System Basics for Process Industries  This quiz helps process control engineers,...
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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...