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shakeel


{ City } lahore
< Country > pakistan
* Profession * engg
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Question { 10805 }

why we use 4-20 mA for calibration of the instruments.why
we cant use 0-20 mA?


Answer

logic zero is show no current in circuit but we use 4 mili amp for instrument is on and ready for use and lower 4 mili amp current relation with non linear ..

Is This Answer Correct ?    5 Yes 1 No