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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Engineering

Relief Valve Datasheet in Under 10 Minutes: 7 Must-Know Definitions

Table of ContentsImage 1: Sectional View of a Spring-Loaded Safety Relief ValveHow a Spring-Loaded...
Instrumentation Calculators

PSIA to PSIG Conversion Calculator

Table of ContentsUnderstanding PSIA (Pounds per Square Inch Absolute)Understanding PSIG (Pounds per Square Inch...
Automation

Understanding Differences of SIS, PLC, and BPCS in Industrial Automation

Table of ContentsWhat are SIS, PLC, and BPCS?What is SIS (Safety Instrumented System)?What is...
Instrumentation Calculators

Mass Flow Unit Conversion: Pounds per Hour (lb/h) to Kilograms per Hour (kg/h)

Engineers, plant operators, and technical professionals can use this Flow Unit Conversion Calculator to...
Instrumentation Questions

Top 25 MCQs on Turbine Supervisory Instrumentation (TSI) for Instrumentation Professionals

Monitoring and safeguarding rotating machinery like steam and gas turbines in process sectors depends...
Instrumentation Calculators

Mass Flow Unit Conversion Calculator: Tons per Day (TPD) to Kilograms per Hour (kg/h)

Engineers, plant managers, and process engineers can precisely convert Tons per Day (TPD) to...
Commissioning

Step-by-Step Logic Check Procedure for Pre-Commissioning Activities in Process Plant

Table of ContentsStep 1. Understand and Validate the Cause & Effect (C&E) MatrixStep 2....
Instrumentation Calculators

Mass Flow Unit Conversion: Slug per Second (slug/s) to Kilograms per Second (kg/s)

Engineers and researchers may precisely and easily convert Slugs per Second (slug/s) to Kilograms...
Communication

Modbus TCP/IP vs Profinet: Which Protocol Suits your Industrial Network Best?

Table of ContentsProtocol Overview - Modbus TCP/IPProtocol Overview - ProfinetFactor 1. Performance and TimingFactor...
Communication

Step-by-Step Guide for Installing and Commissioning HART and WirelessHART Devices for Engineers and Technicians

Table of ContentsIntroduction to HART and WirelessHART TechnologyProject Planning for WirelessHART InstallationsIntegration with Host...
Instrumentation Calculators

Mass Flow Unit Conversion Calculator: Kilograms per Hour (kg/h) to Metric Tons per Hour (t/h)

Engineers and process experts may precisely convert Kilograms per Hour (kg/h) to Metric Tons...
Instrumentation Questions

Top 25 MCQs on Control Valve Types, Selection, and Applications for Project Engineers

Key parts of process industries are control valves, which control fluid flow, pressure, temperature,...
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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...