About Lab
Understand what a 4–20 mA signal represents using an interactive virtual lab. Learn signal meaning visually without theory or calculations.
The 4–20 mA Signal Concept Lab helps beginners understand the meaning of the widely used 4–20 mA signal in industrial measurement systems. Instead of focusing on wiring or calculations, this lab visually demonstrates how signal levels represent process conditions and why standard signals are essential for reliable communication and decision-making.
How to Use This Lab
Observe the initial process condition.
Change the process using the control.
Watch how the signal indicator responds.
Compare low, mid, and high signal behavior.
Reflect on how signals communicate information.
Frequently asked questions
Does this lab include wiring or loop diagrams?
No. It focuses only on signal meaning.
Are current values shown in this lab?
No. The lab avoids numeric values.
Is this lab suitable for beginners?
Yes. It is designed for beginners.
Is this lab part of the free tier?
Yes, it is included in the free foundational labs.