PLC Basics, Electrical and Instrumentation Course, Industrial Automation Tutorials, Process Control Industries

What you’ll learn

Understand why 4-20mA is used in electrical and instrumentation systems.
Learn why 4mA is chosen as the lower limit instead of 0mA.
Learn why 20mA is used as the upper limit in signal transmission.
Analyze why the 4-20mA range was selected over other ranges.
Explore the advantages and disadvantages of using 4-20mA signals.
Learn why 4-20mA is widely used in process control industries.

Requirements

No prior experience in electrical or instrumentation required.
Basic understanding of industrial automation concepts is helpful but not necessary.
Anyone interested in learning about 4-20mA signal transmission can join.

Description

The 4-20mA current loop is the backbone of industrial automation and process control. From PLC (Programmable Logic Controller) systems to sensor-based instrumentation, 4-20mA signals play a vital role in transmitting accurate and noise-resistant data across long distances. But have you ever wondered why 4-20mA was chosen? Why not 0-10V, 0-20mA, or any other range?This Electrical and Instrumentation Basic Course is designed to provide a deep understanding of the 4-20mA standard, explaining its origin, advantages, disadvantages, and why it dominates the industry today. This basic course helps engineers, technicians, students, or automation enthusiasts to learn the fundamentals of this essential 4-20 mA signal transmission method.Why Learn About 4-20mA?Industrial sensors, actuators, and controllers rely on accurate signal transmission to maintain precision and efficiency. The 4-20mA current loop ensures that data remains stable, interference-free, and consistent-even across long distances. Learning about this fundamental technology helps professionals troubleshoot, optimize, and design better control systems.What You’ll LearnWhy 4-20mA?: The history and reasoning behind choosing 4-20mA over other signals.Origins of 4-20 mA: Understand why 4 mA serves as the “live zero” and 20 mA is chosen as the upper limit.Advantages & Disadvantages: Explore how 4-20 mA reduces noise interference, ensures reliable signal transmission, and why it sometimes needs extra components for voltage-based systems.Why 4-20mA is used in PLCs?: How PLCs process analog input signals.Practical Applications: See real-world examples of 4-20 mA in process control, industrial instrumentation, and sensor feedback loops.Why It’s Widely Adopted: Discover how 4-20 mA maintains accuracy over long distances, powering many field devices without extra wiring.Who Should EnrollThis course is perfect for beginners, professionals, engineering students, engineers & technicians, or anyone eager to learn the core principles of 4-20 mA in electrical and instrumentation systems.By the end of this course, you’ll know exactly why 4-20 mA is central to industrial electronics and instrumentation engineering, and how to apply it in your own projects or career. Join us to unlock the secrets behind the most trusted current loop in the industry!

Who this course is for

Beginners learning 4-20mA in electrical & instrumentation.
PLC professionals enhancing 4-20mA knowledge.
Engineering students exploring process control & automation.
Technicians working with sensors & industrial signals.
Anyone curious about why 4-20mA is the industry standard.
Homepage:

www.udemy.com/course/why-4-20-ma-plc-electrical-instrumentation-training/

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