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Inst Tools > Blog > Formulas > Formula to Calculate 4-20ma from Percentage

Formula to Calculate 4-20ma from Percentage

Last updated: March 27, 2023 9:53 am
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Calculate the equivalent 4-20 mA loop current value for any given percentage of signal. We need field transmitter span, lower range value and upper range value.

Contents
Calculate 4-20 mA from PercentageCurrent (mA) = [(16 ma)(X/100)] + 4Video Lessoncalculate the ma for 40 % of signal

Calculate 4-20 mA from Percentage

Formula to Calculate 4-20ma from Percentage

Formula:

Current (mA) = [(16 ma)(X/100)] + 4

Where “X” is desired percentage of signal.

Video Lesson

Example:

calculate the ma for 40 % of signal

Current (mA) = (16 ma)(x/100)+4

Current (mA) = (16)(40/100)+4

Current (mA) = 10.4 ma

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1 Comment
  • yhnm says:
    September 12, 2016 at 4:14 pm

    very good

    Reply

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