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4-20ma ch2o monitoring system

4-20ma ch2o monitoring system

2020-1-15Any 4-20mA system can be set up with additional detectors. For example, when the loop is active, there will be a minimum of 1V developed across R1, because 4mA will be flowing. Should the loop be broken by a damaged cable or faulty connector, the voltage across R1 may fall to zero, or may show AC (typically 50 or 60Hz) due to leakage.

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