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 Questions

Advanced Quiz on Instrument Air Compressor Systems

Instrument air compressors are the most important part of process industries. They provide clean,...
PLC

Why is RTO Used in Place of TON Timer in PLC Program?

Table of ContentsImportance of Timer Functionality in PLCsWhat are TON and RTO Timers? PLC Timers...
Engineering

How to Select the Right Wet Part Materials of Sensors in Process Industries

Table of ContentsWhy Wet Material Selection Matters in Process InstrumentationCommon Wet Materials for Sensors...
Instrumentation Tools

Air Exchange Calculation Excel Tool in HVAC Systems for Design Engineers in Process Industries 

Table of ContentsWhat is Air Exchange in HVAC Systems?Why Air Exchange is Important in...
Level Measurement

Hybrid Level Measurement: Capacitance + Guided Wave Radar (GWR) Technology

Table of ContentsWhat is Hybrid Level Measurement?Explaining the Hybrid Level Measurement DiagramCapacitance Principle in...
Instrumentation Calculators

RTD Class C Tolerance Calculator – IEC 60751 Standard Accuracy

Table of ContentsWhat is RTD Accuracy Class According to IEC 60751?IEC 60751 Accuracy Class...
PLC

Critical Flaw in Rockwell ControlLogix CVE-2024-6242 – Trusted Slot Bypass Vulnerability

Table of ContentsBackground on Rockwell ControlLogix 1756 DevicesWhat is the Trusted Slot Feature?The Vulnerability...
Commissioning

Commissioning Procedure for Differential Pressure Transmitters in Pressurized Boiler Steam Drums

Table of ContentsImportance of Accurate Boiler Drum Level MeasurementComponents in a DP Transmitter Installation...
Instrumentation Questions

Cybersecurity in PLC Systems – Advanced 25 MCQ Quiz

Cybersecurity in PLC systems is now one of the most important problems in the...
Engineering

Thermowell Selection Procedure – Complete Guide for EPC design Engineers

Table of ContentsWhy Thermowells Are EssentialBasic Components of a ThermowellTypes of ThermowellsStep-by-Step Thermowell Selection...
Automation

Emerging and Future Concepts in Functional Safety: AI, Digital Twins and Industry 4.0

Table of Contents1. Convergence of Cybersecurity and Functional Safety2. Dynamic Safety Instrumented Systems (DSIS)3....
Instrumentation Calculators

Failure Rate (λ) Calculator for Process Instrumentation and Industrial Maintenance

Table of ContentsWhat Is Failure Rate (λ) in Reliability Engineering?Failure Rate in Predictive Maintenance...
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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...