Measurement Uncertainty and Accuracy

These flashcards cover key concepts from the lecture notes on measurement uncertainty, accuracy, and analog vs digital meters, assisting in exam preparation.

What is measurement uncertainty denoted by in professional metrology?

It is denoted by small 'u'.

What type of uncertainty is used when making only one single measurement?

B type uncertainty.

How is maximum permissible error (MPE) determined for analog meters?

MPE is defined as the ratio of the class of accuracy to the range, expressed in percent.

What is the desired outcome regarding measurement uncertainty?

Measurement uncertainty should be as small as possible to ensure high precision.

What does RDG stand for in the context of digital meters?

RDG stands for the reading, which is the measured value.

What is the heart of the formula for determining measurement error in digital meters?

The formula varies by range and typically includes parameters like 0.5% RDG and DGT.

What does DGT represent in relation to digital measurements?

DGT refers to the decimal position of the last digit shown in the measurement result.

How can the scale range affect measurements in analog meters?

The scale range determines the maximum value that can be measured with the meter.