Identify the electrical variable that is either directly or
inferentially used by various instruments to determine the
value of a measured variable.
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Answer / mithlesh
All Instruments uses 4-20 mA output signal to indicate the process variables in all mean called direct or inferential.
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Hi,can anyone help me out with PhD programs related to Instrumentation field?I have a degree in electronic Instrumentation?
Why we use 4 - 20 ma?
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