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InterviewSolution
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Why 4-20 Ma Preferred Over 0-10 V Signal ? |
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Answer» The 0-10 V signal has TENDENCY to drop because of line RESISTANCE. If the distance between sensor and INPUT CARD is more the signal will not properly represent the field value. The 4-20 mA will travel a long distance without dropping signal value. The 0-10 V signal has tendency to drop because of line resistance. If the distance between sensor and input card is more the signal will not properly represent the field value. The 4-20 mA will travel a long distance without dropping signal value. |
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