Calculate the equivalent Percentage for any given Process variable. For conversion, we need transmitter Lower Range Value and Upper Range Value.

## Process Variable to Percentage Conversion

**Formula:**

### Percentage % = ((Process Variable – LRV)/Span)(100)

**Span = URV – LRV**

Where

URV upper range value

LRV lower range value

**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 Pressure is 1 Bar

Span = 5 – (-1) = 6

Percentage % = ((Process variable – LRV)/Span)(100)

Percentage % =((1-(-1))/6)(100)

Percentage % = 33.33 %

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Thanks for sharing the formulas related to instrumentation.

Thanks for the information.

Thanks allot Sir

If conversion from MA to differential pressure any formula?????

Its good

thank you very much SIR