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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Communication

SmartBlue vs HART Communicator: Which Is Better for Instrumentation Engineers?

Table of ContentsSmartBlue vs HART Communicator OverviewWhy instrumentation engineers compare SmartBlue and HART CommunicatorKey...
Instrumentation Questions

Advanced Process Control (APC) Basics in Process Industries: Expert MCQ Quiz

What is Advanced Process Control in Industrial Automation? Advanced Process Control makes plant operation better...
Instrumentation

Single Point vs Multiple Point Grounding in Instrumentation Systems: Complete Guide for Engineers

Table of ContentsReal Plant Problems Caused by Improper Grounding in Industrial SystemsWhat is Grounding...
Engineering

ON OFF Control Valve Type Selection Procedure for EPC Engineering

Table of ContentsWhat Is ON OFF Control Valve Type Selection?Meaning of ON OFF valve...
Instrumentation Calculators

Instrument Power Supply Load Calculator: 7 Critical Steps for Accurate 24VDC Power Supply Sizing

Table of ContentsIntroduction to Instrument Power Supply Load CalculationWhy Instrument Power Supply Load Calculator...
Instrumentation Questions

Advanced Quiz on Impulse Line Installation in Process Industries

Quiz Introduction to Impulse Line Installation in Process Industries What This Advanced Instrumentation Quiz Covers Impulse...
Procedures

Step-by-Step Troubleshooting Checklist for Closed Tank DP Type Level Transmitter

Table of ContentsIntroduction to Closed Tank DP Level Transmitter TroubleshootingWhy a Closed Tank DP...
PLC

Siemens LOGO! 9 Explained: Features, Benefits and Comparison with Older Siemens Controllers

Table of ContentsIntroduction to Siemens LOGO! 9Evolution of Compact Logic ControllersSiemens LOGO! 9 vs...
Instrumentation Calculators

Cable Tray Sizing Calculator: Complete Engineering Guide for IEC 61537 and NEC 392 Compliance

Table of ContentsIntroduction to Cable Tray SizingWhy Proper Cable Tray Sizing Is ImportantCable Tray...
Instrumentation Questions

Control Valve Cavitation Troubleshooting Quiz for Instrumentation and Control Engineers

Introduction to Control Valve Cavitation in Process Industries What is control valve cavitation? One of the...
Interview Questions

Top 60 Calibration Audit Questions Every ISO Auditor Should Ask in Process Plants

Table of ContentsCalibration Audit in Process Plants: Why It Matters for ISO Compliance and...
Control Valve

Application of 3 – Way Control Valve in Process Control Systems

Table of ContentsWhat Is a 3-Way Control Valve in Process Control Systems and How...
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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...