All other rights reserved. Avg Char Height. Avg Char Width. Current loops have become the standard for signal transmission in the process control industry.
Current loops are insensitive to noise and are immune to errors from line impedance.
Adding isolation to the 4-20mA current loop protects system electronics from electrical noise and transients. It also allows transducers to be electrically separated by hundreds of volts. 2001 CMP Media Inc. All rights reserved.