Display a 4-20ma output as 0-100 on a screen

Discussion in 'Analog & Mixed-Signal Design' started by crossj3, May 10, 2018.

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  1. crossj3

    Thread Starter New Member

    May 10, 2018
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    Hi Folks,

    Is there any way to scale a 4-20ma output into a 0-100 on a display? Does anyone know how to easily do this with electronic components rather than me using an arduino or other plc?


    Thanks for the help.
    Cheers
     
  2. atferrari

    AAC Fanatic!

    Jan 6, 2004
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    Is a micro controller an option? Have you ever programmed one?
     
  3. crossj3

    Thread Starter New Member

    May 10, 2018
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    Yes a Micro-controller can be an option as a last resort. I have programmed loads. Just finished a degree in Mechatronic engineering so thats basically all i did for the past 4 years ha.
    I dont want to use a microcontroller if possbile for the reason that its working in an agricultural environment and from my experience microcontrollers work perfect on your desk but not bouncing up and down a field.
     
  4. atferrari

    AAC Fanatic!

    Jan 6, 2004
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    OK Your call. A friend of mine works with all kind of machinery / instruments used in that environment. Never heard such a terminant opinion from him.
    Good luck.
     
  5. danadak

    Well-Known Member

    Mar 10, 2018
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    You could always buy one of those cheap Ebay digital panel meters,
    and using an opamp scale the 4/20 ma loop current to read out on DPM.

    upload_2018-5-10_10-23-13.png

    Regards, Dana.
     
  6. bertus

    Administrator

    Apr 5, 2008
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