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Answer Posted / vijay
we have field instruments like voltage,current..etc.but
there is an advantage of using 4-20mA,If we are using the
voltage sensors,u know the voltage is resistance
dependence,and resistace of coductor varies as the distance
and temperature,varies.so u may not get the accurate signal
if u prefer for the voltage sensors.using current sensors u
don't find this problems
| Is This Answer Correct ? | 22 Yes | 8 No |
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