Metrology Midterm

Has to ensure the adequate function of measurement instruments used in industry as well as production and testing process.

• Industrial Metrology

• Scientific Metrology

• Fundamental Metrology

• Legal Metrology

It is necessary to check all material, products and component parts at various stages during manufacturing, assembly, packing and installation on customer´s environment.

• Need of Inspection

• Calibration

• Precision

• Industrial Metrology

It is the relationship between values of quantities indicated by a measuring instrument and the corresponding value realized by standards.

• Calibration

• Expectation

• Precision

• Range

It is called fundamental method and it is based on the measurement of the base quantities used to define a particular quantity.

• Absolute Method

• Comparison Method

• Substitution Method

• Coincidence Method

Select the factors that affects the accuracy of measuring instruments:

• Environmental conditions

• Calibration

• Inspector

• Standardization

The advantages of this are: accuracy in performing manufacturing operations, reduce inspection, an ensure quality products by reducing errors in measurement.

• Primary Standards

• Calibration

• Secondary Standards

• Status of Calibration

This step is to determine the error in the instrument by various methods.

• Cleaning the instrument

• Determination of error

• Minor Changes

• Next calibration date

The report highlight only the key features of the work such as what was done and what was conclude

• Reporting Result

• Uncertainty

• Executive Summary

• Progress Report

A measure of consistency or repeatability of measurement.

• Precision

• Sensitivity

• Resolution

• Error

It is the largest range of values of measured variable to which the instrument do not respond

• Dead Zone

• Reproducibility

• Tolerance

• Drift