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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Control Valve

How to Prepare Control Valve Datasheets: A Step-by-Step Procedure for EPC Instrumentation Engineers

Table of ContentsWhat is a control valve data sheet?How to Prepare Control Valve Data...
Instrumentation Calculators

Mean Time Between Failures (MTBF) Calculator for Process Instrumentation Maintenance

Process sector engineers and maintenance experts will find excellent diagnostic and planning tool in...
Instrumentation Questions

Advanced Multivariable Transmitter Challenge: Flow, Pressure & Temperature Integration

Combining the power of many process sensors differential pressure, static pressure, and temperature into...
Instrumentation Calculators

Circular HVAC Duct Air Velocity Calculator for Engineers

HVAC experts engaged in the design, installation, and maintenance of ducted air distribution systems...
Engineering

How to Fix Common Cable Management Issues using Cable Tray Accessories

Table of ContentsImportance of Proper Cable ManagementTypical Issues with Cable ManagementHow Cable Tray Accessories...
Communication

CC-Link Industrial Network Protocol: Architecture, Variants, and Applications

Table of ContentsWhat is CC-Link?Origins and Development Timeline - CC-Link ProtocolApplications of CC-Link in...
Control Valve

Control Valve Selection and Recommended Practices for Harsh Process Conditions

Table of ContentsStep 1. Valve Body and Material SelectionStep 2. Trim Material and Cavitation...
Instrumentation Questions

Advanced I/O List Quiz for EPC Instrumentation Engineers – 25 Expert-Level MCQs with Explanations

For instrumentation engineers working on EPC projects, accurately creating an I/O list is absolutely...
Instrumentation Calculators

Rectangular Duct Air Velocity Calculator for HVAC Engineers

The Air Velocity in a Rectangular Duct Calculator is a useful and necessary tool...
Level Measurement

Guided Wave Radar Level Transmitters: Complete Troubleshooting & Maintenance Guide

Table of ContentsProbe Installation and Scarring IssuesFoam and Surface EffectsAntenna (Probe) Contamination and CleaningFlooding,...
DCS

Understanding Permissive Logic and Trip Interlocks in Industrial Systems

Table of ContentsExample of a Permissive ConditionImplementation Platforms for Permissive LogicBehavior of a Permissive...
Calibration

Why Calibration Isn’t the Same as Re-ranging in Process Instrumentation

Table of ContentsWhat is Calibration?What is Re-ranging?Calibration vs. Re-ranging: Key DifferencesPractical Understanding Through a...
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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...