At company DEWESoft, we perceived a need for customers to prove the calibration laboratory abilities and the quality of services provided. For this reason, we decided to prove it by obtaining the ISO/IEC 17025:2017 standard.
The core of the master's work is to determine the calibration uncertainty of the calibration system used in a company DEWESoft. In this document calibration system, procedure and used equipment are described. The system allows calibration of various devices of the mentioned company using various calibration equipment. Calculation of the measurement uncertainty is therefore given generically for any device and calibration equipment.
The work is equipped with tests where we evaluate the measurement uncertainty and use it for the calculation in compliance with document EA-4/02 M - Evaluation of the uncertainty of measurement in calibration. Due to the complexity of the system, we limited ourselves to the calibration of DC voltage, which represents the greatest interest to the company and their customers. All known contributions of measurement uncertainty are described, as well as the calculation for extended measurement uncertainty. Provided is also an example of a calculation with numbers for calibrating a DEWE 43A.
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