[Boatanchors] general OT question on panel meters

[J. Forster]

Gene,

Yes and no.

Yes, you can use any 50 mV shunt.

BUT, the meter reading will have to be scaled for shunts other than a 30 A
shunt.

For example, if you get a 50 A shunt, when the meter reads 30 A, the
current through the shunt will be 50 A.

Essentially, you have to multiply your meter reading by (shunt val)/30 A

-John

==================



> Hello all,
>
> I purchased a round, analog panel meter 0-30 ADC for a project. Printed on
> the face of the meter says "FS=50MVDC" which I take to mean full scale
> deflection will occur at 50 mV DC.  Question is, can I get any 50mV shunt
> (minimum 30A, of course) and will it work? Or does the shunt need to
> somehow be 30A = 50mVDC? If I got a 100A 50mVDC shunt, will this indicate
> incorrectly on the meter?
>
> Thanks in advance for the OT question
>
>
> 73 Eugene W2HX
>
>
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