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Can someone explain to me the different between 4-20ma loop powered and 4-20ma?
To my knowledge, 4-20 ma loop powered means that 24Vdc power supply is coming from the DCS Analogue input card for any transmitter connected to the DCS. But, how do you explain 4-20 ma input from a transmitter that is not loop power from the DCS and yet connected to the DCS Analogue input card??
Can someone explain to me the different between 4-20ma loop powered and 4-20ma?
To my knowledge, 4-20 ma loop powered means that 24Vdc power supply is coming from the DCS Analogue input card for any transmitter connected to the DCS. But, how do you explain 4-20 ma input from a transmitter that is not loop power from the DCS and yet connected to the DCS Analogue input card??