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Ashlin

post-graduate in Electronics & communication.
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Instrumentation Questions

Test Your Knowledge: Instrument Logic Diagram Quiz Based on Real DCS to MCC Logic Diagram

This advanced quiz is for professionals and students who want to learn how to read Instrument Logic Diagrams (ILDs) in process control systems. The questions test your ability to understand interlocks, permissives, start/stop logic, flip-flop latching, timer delays, and field feedback integration by using...
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 Loop DiagramExample System: Fresh Feed Flow Control to a Process UnitProcess Description: Control Strategy and SequenceDetailed Breakdown of Each Component in the DiagramUnderstanding Signal Flow and Terminal PointsImportance of the...
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Control Valve

What is a subsurface safety valve?

The chances of uncontrolled flow in a wellhead are really high, so a subsurface...
Control Valve

What is an emergency stop valve?

The emergency stop valve is a shut-off valve that would cut of the process...
Control Valve

What is a bellow seal valve?

Table of ContentsWhat are the features of a bellow seal valve?Why bellow sealed valves?How...
Control Valve

What is an automatic recirculating valve and where is it used?

The automatic recirculating valve is a type of control valve for the protection of...
Control Valve

What is a reversing valve?

A reversing valve can be seen in a heat pump, because of its ability...
Control Valve

What is a deluge valve and what is the need for a deluge system?

Table of ContentsWhat is a deluge system and why is it used?How does a...
Instrumentation

What is a surge tank?

A surge tank can be described as a storage reservoir, this device would be...
Instrumentation

What is a pressure surge in a pipeline and how to do the surge analysis?

What is a pressure surge or water hammer and what causes them? The pressure surge...
Control Valve

What is an expansion valve?

These valves are used to control the refrigerant flow in a refrigeration system. Expansion...
Electrical

What is a stepper motor?

The name stepper is used because the rotation of the motor is through the...
Electrical

What is a servo motor?

A servo motor is a variable speed drive and it is used in many...
Control Valve

What is a balancing valve?

What is a balanced system and what is the need for balancing? A balanced system...
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Instrumentation Questions

Test Your Knowledge: Instrument Logic Diagram Quiz Based on Real DCS to MCC Logic Diagram

This advanced quiz is for professionals and students who want to learn how to...
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...

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