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Introduction to Induction Motor

Introduction One of the most common electric motors used in most applications is known as...

What is an annunciator ?

INTRODUCTION The purpose of an alarm system (annunciator) is to bring attention to an abnormal...

Types of pressure relief valves

Pressure relief valves: Pressure relief valves are safety valves that are designed to prevent internal...

Introduction to Electrical Power Transformer

Definition of Transformer A transformer is a static machine used for transforming power from one circuit to...

What is Microprocessor Based Relay?

Introduction Microprocessor relays provide many functions that were not available in electromechanical or solid-state designs....

Introduction to Vibration measuring devices

Table of ContentsDefinitionUnits of VibrationSome effects of VibrationVibration-measuring devicesStroboscope MethodReed VibrometerSeismic-Mass TransducerVibration measuring instruments,...

What is Cavitation and Flashing?

  Cavitation and flashing are two main kinds of noise in flowmeters and in control...

Difference between VLAN and VPN

Introduction A local area network is defined as a computer network that is in the...

How to write a PLC ladder logic program?

The ladder logic programming is commonly used to program PLCs. A PLC takes input from field devices...

Hazardous Areas and Zonal Classification

Introduction A HAZARDOUS area / environment may be potentially prone to: • An accident • The creation...

Difference between IEC 61508 & IEC 61511 SLC Version

Introduction  Each phase of the lifecycle requires input information and delivers output information. The relevant...

Fiber Optic Temperature Sensors

Fiber optic temperature sensors are used where the temperature measurement is made in hostile...