The metrology is the scientific discipline dedicated to analysis of systems measures and weights. Its object of study are the magnitude measurements, promoting traceability to favor standardization.
Thanks to metrology it is possible discover and express the value of quantities accurately, appealing to various methods, instruments and techniques to achieve the desired result.
The industry and the science they need metrology. The tasks of accreditation, certification Y standardization They are essential to ensure the accuracy of the results and to enable exchange and comparison at the international level.
It is important to note that measurements and weighings can be performed with multiple tools. Some elements are simple, such as stopwatches and the rules, but others are very complex, like computers (computers) and microscopes.
One of the tasks of metrology is to promote the calibration of the instruments. This process allows you to compare what the device indicates and what it should indicate according to a reference standard that has an already known value. When the instrument is calibrated, it works accurately.
Calibration is linked to the traceability, another of the goals of the metrology experts. Traceability is called the property of the results when they can be related to certain patterns and, by extension, to the fundamental units of the International System. To get to this instance you need a chain of comparisons without interruptions.
It should be noted that there are different areas or specializations of metrology. One of them is the electrical metrology, oriented to the study of intensity, impedance, resistance, voltage and other magnitudes associated with electricity.