Cable length

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 Question by Ruben Baracinas posted 08 Oct 2006
 Cable length
I am currently working on a project that requires an analog output of 4-20mA. The problem is "What cable/wire gauge and its maximum length will I use that will give me the 4-20mA output?"

Is there a formula or computation that will help me solve my problem?

Should I only rely on the cabling or must I use another device that will provide me the data?
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 Answer by Joseph Golan posted 11 Oct 2006
Dear Ruben,
Part of the equation to determine this is the working (nominal) voltage and the tolerence of this voltage for the circuit which is missing from your question. The key is the restistance value of the cable conductor which is dependent on it's size.


Sincerely,
Joseph Golan, RCDD

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