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If an Instrument has 550 ohm internal resistance and the
cable used for that instrument is 0.5 ohm per meter
resistance. If the voltage is 12volt.How much length cable
can be used? Please tell me its Calculation formula.
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Answer Posted / c heman
Assume it is a 4-20 ma tx. 20ma*550= 11volts. minimum
supply is required. so allowable voltage drop is only 1
volt.
so max. 100meter u can use.
got the answer, don,t foget to say thanks.
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