which type of signal used in instrument?
Answers were Sorted based on User's Feedback
Answer / shajee
4-20 ma signals and 1 to 5 volts used instruments
| Is This Answer Correct ? | 30 Yes | 5 No |
Answer / animesh
4 -20ma=1-5vdc
we use 250ohmresistor
so1v/250ohm=4ma
&5v/250ohm=20ma
| Is This Answer Correct ? | 16 Yes | 0 No |
Why we are using 4-20 mA as Analog signal transmission other than 3 to 19 or 2 to 18 or 6 to 22 like wise ? What is the reason behind using 4 & 20 mA? Can anyone give proper technical reply ?
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