Calculate the equivalent Percentage for any given current signal 4 to 20 mA. For conversion, we need transmitter’s Lower Range Value and Upper Range Value.

## Current 4-20ma to Percentage Conversion

** Formula:**

### Percentage, % = ((X-4)/16)(100)

Where

X is current signal in mA

## Video Lesson

**Example: **

#### An electronic Pressure transmitter is ranged -1 to 5 Bar and has a 4-20 ma. Calculate the Percentage output by this transmitter if the measured output current is 13ma.

Percentage % = ((X-4)/16)(100)

Percentage % = ((13-4)/16)(100)

Percentage % = 56.25

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Very good post

Really Helpfull…!

endless knowledge …………………………..about Instrumentation

Thank you so much, this finally makes sense to me.

The -25 part was very unclear – I understand the value doesn’t start at 0 but you just came up with -25 from 4-20?!