Fundamentals of Electrical Instrumentation

Master the fundamentals of instrumentation: Learn to wire digital & analog circuits and understand how they work!
Fundamentals of Electrical Instrumentation
File Size :
886.25 MB
Total length :
1h 45m



The Wiring Wizard


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Fundamentals of Electrical Instrumentation

What you’ll learn

Instrumentation wiring & operation
Digital (discrete) Inputs – learn digital input circuits, learn how to wire contact and transistor input devices in sink & source configuration
Digital (discrete) Outputs – learn digital output circuits, learn how to wire output devices such as a solenoid actuated valve, learn sink & source output wiring configuration
Analog Inputs – learn 0-10volt and 4-20ma input circuits, learn how to connect a loop powered analog input device
Analog Outputs – learn 0-10volt and 4-20ma output circuits, learn how to connect a current output to a variable frequency drive

Fundamentals of Electrical Instrumentation


Understand the difference between AC and DC
Understand difference between Normally Open & Normally Closed
Understand basic ohms law theory
Understand basic electrical circuit principles for e.g. current flow, voltage potential, and series & parallel circuits
Understand the purpose of instrumentation – not critical
Understand what a transistor is – not critical


In this course you will learn the Fundamentals of Electrical Instrumentation – you will learn about the different types of devices, sensors, and circuits used in this field.Instrumentation is the vital ingredient that enables the process control systems of buildings and factories to run smoothly. Within these  process control systems are numerous instrumentation devices that take measurements and perform operations which are transmitted and received via electrical circuits – in other words along the wires that they are connected to!It takes a skilful person to know how these electrical circuits work and how the wiring must be connected. That’s where you come in!After completing this course, you will know how to wire up digital (discrete) & analog instrumentation devices and understand how the electrical circuits connected to them work.Electrical instrumentation devices come in many forms, the four types that we will focus on in this course are:-Digital (discrete) Inputs-Digital (discrete) Outputs-Analog Inputs-Analog OutputsIn the course we will start off by looking at Digital Inputs, we will learn about what digital input devices are used for and learn how to connect them to a controller in sink and source configuration. Connecting a push button and a proximity sensor as digital input devices will be demonstrated.Digital Outputs are covered next, we learn how to connect a solenoid actuated water valve as an output device and also look at sink and source wiring configurations.About halfway through the course we put what we’ve learnt to the test by surfing the net and studying some various wiring diagrams of instrumentation & plc circuits. When we get to Analog Inputs, we hone in on the basic fundamentals of analog circuits such as the 0-10volt and 4-20ma circuits. We then discuss 2, 3, 4 and 5 wire transmitters and round out the chapter by demonstrating a temperature sensor connected in a loop as an input device. WARNING – there may be a little maths involved (just a little)!An Analog Output circuit is demonstrated next by using a variable frequency drive as our output device, we get to see what happens to a motor connected to the drive when the analog signal is changed.To finish off we study a controller as it would look in a real installation with various inputs and outputs connected to it.So if you are ready to boost your electrical control skills by learning the fundamentals of instrumentation I’ll see you in the course!But don’t forget your pen and paper as there will be some fun exercises along the way!


Section 1: Introduction

Lecture 1 Introduction

Section 2: digital inputs

Lecture 2 basic circuit operation

Lecture 3 sink & source

Lecture 4 PNP & NPN

Lecture 5 exercise

Lecture 6 digital input – wiring

Lecture 7 proximity sensor – wiring

Lecture 8 extra information

Section 3: digital outputs

Lecture 9 basic circuit operation

Lecture 10 exercise

Lecture 11 digital output – wiring

Lecture 12 circuit variations

Lecture 13 alternative power supply

Lecture 14 exercise

Section 4: surfing the net!

Lecture 15 surfing the net #1

Lecture 16 surfing the net #2

Lecture 17 surfing the net #3

Lecture 18 try it yourself!

Section 5: analog inputs

Lecture 19 analog inputs – introduction

Lecture 20 basic circuit operation

Lecture 21 circuit variations

Lecture 22 ground, differential and single ended wiring

Lecture 23 exercise

Lecture 24 analog input – wiring

Section 6: analog outputs

Lecture 25 analog outputs – introduction

Lecture 26 basic circuit operation

Lecture 27 adding grunt!

Lecture 28 analog output – wiring

Lecture 29 exercise

Section 7: putting it all together

Lecture 30 an installation at a glance

Lecture 31 digital input & digital output

Lecture 32 analog input & analog output

Lecture 33 modular controller example

Lecture 34 modular controller – digital input

Lecture 35 modular controller – digital output

Lecture 36 modular controller – analog input

Lecture 37 modular controller – analog output

Section 8: outro

Lecture 38 congratulations!

Anyone that has an interest in instrumentation & PLC wiring and circuitry,People who have done some basic electrical or electronics theory and wish to up-skill,Technicians wishing to learn more about instrumentation wiring & operation,Anyone interested in learning about digital inputs and outputs,Anyone interested in learning about analog inputs and outputs – 4-20ma & 0-10volt,Anyone interested in learning about instrumentation devices and sensors

Course Information:

Udemy | English | 1h 45m | 886.25 MB
Created by: The Wiring Wizard

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