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Areej

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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...
Procedures

Galvanic Isolator Troubleshooting Procedure in an Analog Input Loop

Table of ContentsIntroduction to Galvanic Isolator TroubleshootingUnderstanding a Typical 4 to 20 mA Analog Input LoopCommon Symptoms of Galvanic Isolator ProblemsStep by Step Galvanic Isolator Troubleshooting ProcedureIndustrial Troubleshooting Case Study: Incorrect DCS Pressure ReadingSafety Precautions for Galvanic Isolator TroubleshootingGalvanic Isolator Selection and Maintenance Best...
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Electrical

What motor bearings do?

Introduction The main function of motor bearings is to reduce friction and wear on rotating...
Communication

What is an OPC or Open process control?

What is OPC? OPC means "Open process control" or "Open platform communications" It is a standard...
Electrical

Introduction to Alternating Current

Introduction AC stands for Alternating Current and is symbolised by “~”. This current alternates both...
Electrical

Difference between the Rotor and the Stator

Introduction The stator and rotor both are the parts of the electrical motor. The significant difference...
Control System

What is a PID control action?

TWhat is a controller and why is it required in a process system?What is...
Condition Monitoring

Theory of Vibration sensors

Introduction Sensors used to measure vibration come in three basic types: displacement, velocity, and acceleration....
Instrumentation

Advantages/disadvantages of Pneumatic & Hydraulic Actuators

Pneumatic Actuators A set of devices into with one or more pneumo engines, which are determined...
Electrical

Fuse and Types of Fuses

What is a Fuse: The fuse is an electronic device, which is used to protect...
Electrical

What is Marshalling Cabinet or Marshalling Panel?

What is the purpose of marshalling cabinets? Marshalling means grouping of I/O. The marshalling panel...
PLC

Guidelines for PLC wiring

Introduction The PLC – programmable logic controller – is an industrialised computer designed specifically for...
Flow Measurement

What is Laser Doppler anemometer

Introduction  The Doppler effect is a method to measure linear velocity. When a narrow laser...
Interview Questions

PLC Interview Questions with Answers Part 2

This session is the continuation of  PLC Interview Questions with Answers Part 1 This...
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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...
Instrumentation Questions

Advanced Instrument Logic Diagram Quiz for Process Control Systems in Process Industries

Instrument Logic Diagram Quiz Introduction An Instrument Logic Diagram displays the interaction of process conditions,...