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[Solved] What's the 4-20ma percentage fuction on DMMs used for?
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Topic: [Solved] What's the 4-20ma percentage fuction on DMMs used for? (Read 518 times)
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ballsystemlord
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[Solved] What's the 4-20ma percentage fuction on DMMs used for?
«
on:
October 13, 2023, 02:45:04 am »
In the spread sheet here:
https://www.eevblog.com/forum/testgear/multimeter-spreadsheet/
There's a function listed as 4-20ma. It's explained in the thread that it means that the DMM reads:
0% for 4ma
50% for 12ma and
100% for 20ma.
What is this useful for? Like aside from LED current draw?
Thanks!
«
Last Edit: October 13, 2023, 03:01:21 am by ballsystemlord
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ataradov
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Re: What's the 4-20ma percentage fuction used for?
«
Reply #1 on:
October 13, 2023, 02:53:19 am »
It is a standard control current for industrial applications.
https://en.wikipedia.org/wiki/Current_loop
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Alex
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