Introduction to the 2-Wire Transmitter and 4-20mA Control Loop

Overview:

In this paper, we review the operation and advantages of the 4-20mA transmission standard and loop-powered transmitters. The discussion explains sink vs. source wiring, power requirements, voltage drops, proper grounding, transmission distance, signal noise, live zero calibration and more.

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Author: Acromag  | File Type: PDF

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