The importance of checking a weighing instrument.

A measuring instrument is an instrument with the function of making a measurement, that is, relating a physical quantity to real-world objects. In the field of weighing, the typical measuring instrument is the scales, an instrument that must be calibrated and calibrated using samples commonlycalled sample weights or sample masses. These samples must also in turn be subjected to checks consisting of calibrations and calibrations referring to other samples having more accurate accuracy class In metrology the characteristics that are to be checked of a weighing instrument are : precision, resolution, linearity and stability. From this brief and concise description it is well understood the importance of checking a weighing instrument, a check that is established by Decree Law 93 of April 21, 2017. The check for most scales not automatic goes performed every three years and is still mandatory in case of their repair. For scales automatic control should be performed every year and when the instrument is repaired. Many users, however, believe good practice to carry out periodic audits with very small intervals based on the conditions of use of the instrument, on the number of weighings carried out in a given period or on the need to guarantee of the accuracy of the measurements to be obtained. For this reason Cogo Scales has for years had in-house a recognized metrology laboratory and Licensed to perform periodic verification and calibration of automatic scales (AWI), non-automatic scales. (NAWI) and sample masses, a laboratory that is undergoing accreditation ISO 17025 as a guarantee of further professionalism and competence.

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