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What is the maximum load I can connect to the current output of a 4-wire transmitter?

April 26, 2017Connect load maximum output transmitter

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What is the maximum load I can connect to the current output of a 4-wire transmitter?

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The maximum load that can be connected to a current output depends on the output compliance. Each product has an output compliance specification that can usually be found on the last page of the data sheet. We can determine the maximum allowable load by using Ohm’s Law. For example, if the compliance of a 4-20 mA output signal is 15 V, then the maximum load is 750 ohms. (15 V / 0.02 A)=750 ohms.