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Correction and Degree of Error - Metrology Definitions and Differences

Dongzkie

Involved In Discussions
#1
can anyone please explain with this two. Some of calibration results uses this "correction" or "degree of error" , i just got confused with this terms.
 
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Jerry Eldred

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#2
I am not sure without further details the use of the word "degrees". But the difference between correction and error is they are opposite. CORRECTION in calibration is the amount needed to adjust a measurement back to nominal. ERROR is the opposite; it is how far off the measurement is from nominal.

If you calibrate a meter and apply exactly 1.000 Volts DC, and the meter reads 0.990, the ERROR is -0.010 because the meter is reading -0.010 volts off from exact. The CORRECTION would be +0.010 VDC, because that is how much must be added onto the meter reading to correct it to an exact reading.

I would need some more information to understand the "Degrees of Error" as opposed to "Error."
 
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