Calculate Current (4-20ma) from Process variable PV

This tool is used to calculate the current signal in the range of 4-20ma using process variable (PV), Upper Range Value (URV) & Lower Range Value (LRV).

This calculation tool is used to find out the equivalent current signal 4-20 ma using PV, URV & LRV.

Calculate current from Process variable:


PV = Process Variable

URV = Upper Range Value (Transmitter Max scale value)

LRV = Lower Range Value (Transmitter Min scale value)


For calculating the equivalent current 4-20ma, we have to enter PV, URV & LRV details.

The above calculation tool designed for a standard 4-20 ma signal conversion.

You can convert out of range signal also with the above tool.

(Example: URV = 100, LRV = 0 and PV = 110)

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8 thoughts on “Calculate Current (4-20ma) from Process variable PV”

  1. Hi,
    I am Pavan working as assistant engineer, instrumentation. I used your instrumentation tools for calculations.Can you please share the formula for the Calculate current from Process variable conversion tool. Thanks

  2. Hello sir thank you very much… I want to know (i mean formula) how to calculate process variable to MA.
    Example 1) range LRV is -17℃ URV is 3.3℃
    If PV is -11.7℃ how much ma.
    Example 2) range LRV is -185mbar URV is -80mbar
    If PV is -72mbar how much ma.
    Example 3) range LRV is 0 barg URV is 34.4barg
    If PV is 19barg how much ma. In this deferent type of range. How can i calculation ma from PV. Sir can you pls explain the formula.I hope you can give the answer. Thanks you sir


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