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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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SIS/ESD

Inhibit vs Bypass in Process Plants: DCS, PLC and ESD/SIS Differences

Table of ContentsWhy Understanding Inhibit vs Bypass in Process Plants MattersWhat Is an Inhibit in Process Automation?What Is a Bypass in Process Automation?What Is Override Control in Process Automation?Inhibit vs Bypass in DCS, PLC and SISHow Inhibit and Bypass Work in Control LogicInhibit and...
Instrumentation Calculators

Advanced Instrument Air Compressor Interlock Logic and Control Quiz for Automation and Instrumentation Professionals

Instrument Air Compressor Interlock Logic Quiz Introduction Instrument air compressors are critical utility equipment controlled through PLC based sequencing, pressure instrumentation, permissives, alarms, trips and automatic standby selection. For automation and instrumentation professionals, understanding this logic is essential for DCS configuration, PLC programming, control panel...
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Control System

How to Read a DCS Cascade Control Loop Diagram: A Complete Guide with Example

Table of ContentsWhat is a Loop Diagram?What is Cascade Control?Purpose of a DCS Cascade...
PLC

Step-by-Step PLC Ladder Logic for Automatic Liquid Mixing Process with Interlocks

Table of ContentsWhy Liquid Mixing Needs AutomationProcess OverviewPLC I/O Address AssignmentLadder Logic Design (Step-by-Step...
Calibration

Why Calibrating your Calibrators is Critically Important: Accuracy, Compliance and ISO 17025 and NIST Traceability

Table of ContentsRole of Calibrators in Process IndustryWhy Calibrating Calibrators are Important ?Importance of...
Instrumentation Calculators

Free Online PT500 RTD Calculator: Resistance to Temperature Conversion for Instrumentation Professionals

A Resistance Temperature Detector (RTD) is a precision sensor designed to track temperature depending...
Instrumentation Questions

Advanced Quiz on RADAR Level Measurement for Process Instrumentation Engineers

With this advanced 25-question test tailored for instrumentation and automation experts, test your knowledge...
Automation

Understanding Fail-Safe Logic in Industrial Automation Systems

Table of ContentsWhy Fail-Safe Logic Matters in InstrumentationKey Terms used in this Explanation:Example 1:...
Instrumentation

Understanding the Difference Between Live Zero and Dead Zero in 4 to 20 mA Signals

Table of Contents4-20 mA Current Loop: Why It’s StandardWhy not start at 0 mA?What...
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...
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SIS/ESD

Inhibit vs Bypass in Process Plants: DCS, PLC and ESD/SIS Differences

Table of ContentsWhy Understanding Inhibit vs Bypass in Process Plants MattersWhat Is an Inhibit...
Instrumentation Calculators

Advanced Instrument Air Compressor Interlock Logic and Control Quiz for Automation and Instrumentation Professionals

Instrument Air Compressor Interlock Logic Quiz Introduction Instrument air compressors are critical utility equipment controlled...
Procedures

Galvanic Isolator Troubleshooting Procedure in an Analog Input Loop

Table of ContentsIntroduction to Galvanic Isolator TroubleshootingUnderstanding a Typical 4 to 20 mA Analog...
Instrumentation Calculators

Pressure Transmitter Overrange Protection Calculator: Calculate Pressure Surge and Overpressure Risk

Table of ContentsWhat Is Pressure Transmitter Overrange Protection?Pressure Transmitter Overrange Protection Calculator ParametersHow to...