Introduction to 4-20 mA Signals | Fieldbus Course

Learn the fundamentals of 4–20 mA signals used in industrial instrumentation and control systems. This lesson explains the working principle, current loop concept, live zero, signal scaling, and why 4–20 mA is preferred over voltage signals. Understand wiring basics, advantages, and how transmitters send process variables like pressure, flow, and level to control systems reliably in real-world applications. This lesson is part of the Fieldbus Course, covering essential concepts for modern industrial communication systems. FULL COURSE HERE: https://www.udemy.com/course/foundation-fieldbus/?referralCode=728C4743D1981BB10255 ## Video Topics ## 0:00 Fieldbus Protocol 1:11 4-20 mA Signals 1:44 Field Instruments 3:00 Analog Signals Explanation ✨ FOLLOW US ✨ 👉WhatsApp: https://whatsapp.com/channel/0029VaAbUecLNSa4rDPOV31o 👉Telegram: https://t.me/+u3qORX5FKec1NjA1 👉Instagram: https://www.instagram.com/instrumentationtools/ 👉Facebook: https://www.facebook.com/instrumentationtoolss/ 👉LinkedIn: https://www.linkedin.com/company/instrumentationtools/