Book Image

Industrial Automation from Scratch

By : Olushola Akande
Book Image

Industrial Automation from Scratch

By: Olushola Akande

Overview of this book

Industrial automation has become a popular solution for various industries looking to reduce manual labor inputs and costs by automating processes. This book helps you discover the abilities necessary for excelling in this field. The book starts with the basics of industrial automation before progressing to the application of switches, sensors, actuators, and motors, and a direct on-line (DOL) starter and its components, such as circuit breakers, contactors, and overload relay. Next, you'll explore VFDs, their parameter settings, and how they can be wired and programmed for induction motor control. As you advance, you'll learn the wiring and programming of major industrial automation tools – PLCs, HMIs, and SCADA. You’ll also get to grips with process control and measurements (temperature, pressure, level, and flow), along with analog signal processing with hands-on experience in connecting a 4–20 mA transmitter to a PLC. The concluding chapters will help you grasp various industrial network protocols such as FOUNDATION Fieldbus, Modbus, PROFIBUS, PROFINET, and HART, as well as emerging trends in manufacturing (Industry 4.0) and its empowering technologies (such as IoT, AI, and robotics). By the end of this book, you’ll have gained a practical understanding of industrial automation concepts for machine automation and control.
Table of Contents (21 chapters)
1
Part 1: Learning the Concepts and Skills Required to Get Started
8
Part 2: Understanding PLC, HMI, and SCADA
14
Part 3: Process Control, Industrial Network, and Smart Factory

Temperature measurement and transmitters

Temperature is the measure of the degree of hotness or coldness of something. Temperature measurement is an important task in the process industry and can be achieved with the aid of a sensor and transmitter. Common sensors are resistant temperature detectors (RTDs) and thermocouples.

An RTD is a device whose resistance changes as the temperature changes. It has a temperature range of -260 to 850 degrees Celsius. It has better sensitivity than a thermocouple but it is more expensive. The types of RTD sensors, when categorized by the resistant element material, are Pt100, Pt1000, Ni120, and Cu100. The letters represent the material of the element while the number represents the resistance at 0 degrees Celsius. Pt100 is the most common RTD. The resistance element is Platinum and it has a resistance of 100 Ohms at 0 degrees Celsius.

An RTD temperature sensor requires an RTD transmitter to produce a standard signal output (for example, 4 to...