Unit of Expanded Uncertainty in Percentage

A

akmal122g

#1
Hello. Can someone teach me how to convert the unit of expanded uncertainty for current from percentage to ampere? Example in this certificate is

Nominal value = 1 A
Measured value = 1.0001 A
Error = 0.0001 A
Expanded uncertainty = 0.04 %

Thank you.
 
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Hershal

Metrologist-Auditor
Staff member
Super Moderator
#5
The math seems right but the application is the key. If reporting a single measurement, then the same unit is preferred. If across a range, then often a percentage is a better and more understandable approach. Of course, for a range, one can also use a floor and range concept.
 
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