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

Gas Flow Unit Conversion Calculator: Normal Cubic Meters per Hour (Nm³/h) to Standard Liters per Minute (SLPM)

Engineers, process experts, and instrumentation specialists frequently have to convert Normal Cubic Meters per...
Control System

Virtual Redundant Transmitter (VRT) in Honeywell Turbomachinery Control Systems

Table of ContentsWho is VRT for?Problem Statement: Limitations of Simplex TransmittersWhat is VRT and...
Instrumentation Calculators

Gas Flow Rate Conversion Calculator: Standard Cubic Feet per Minute (SCFM) to Normal Cubic Meters per Hour (Nm³/h)

Working across U.S. conventional and metric systems, engineers, plant operators, and fluid mechanics experts...
Instrumentation Questions

Test your Knowledge on Foundation Fieldbus Communication Protocol: Advanced Quiz for Instrumentation Engineers

A reliable digital, bi-directional communication protocol called Foundation Fieldbus is utilized in process automation...
Instrumentation Calculators

SCFH to Nm³/h Conversion Calculator, Formula and Gas Flow Unit Guide

Table of ContentsSCFH to Nm³/h Gas Flow Conversion CalculatorSCFH to Nm³/h Conversion CalculatorDefinition of...
Commissioning

Cold and Hot Loop Checking in Automation: Key Differences and Step-by-Step Procedures

Table of ContentsWhat is a Control Loop?What is Loop Checking?Understanding Control Loop Commissioning with...
Instrumentation Calculators

Gas Flow Unit Conversion Calculator: Cubic Meters per Hour (m³/h) to Standard Cubic Feet per Minute (SCFM)

Equipment sizing, system calibration, data reporting, and compliance depend on unit conversion between metric...
Documentation

82 Essential Drawings and Documents for Instrumentation and Control Engineers

Table of ContentsProject Engineering Stage (Design & Construction Phase)Automation Stage (DCS/PLC/SCADA Configuration)Maintenance & Commissioning...
PLC

Scaling Analog Values in Industrial Automation (PLC)

Table of ContentsKey Definitions -Scaling Analog ValuesWhat is Analog Signal Scaling?Why is Analog Scaling...
Instrumentation Calculators

Gas Flow Unit Conversion Calculator: Liters per Second (L/s) to Standard Cubic Feet per Minute (SCFM)

Accurate unit conversion is crucial in process industries, HVAC systems, and gas flow monitoring...
Instrumentation Questions

Advanced Profinet Protocol Quiz for Automation Engineers

Test your knowledge of Profinet, one of the most potent Ethernet-based communication protocols used...
PLC

Understanding NO vs NC Contacts is key for Logic Writing in PLC Programming

Table of ContentsWhat are NO and NC Contacts?Definition of NO and NC ContactsWhat is...
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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...