Abstract—The Regional Metrology Laboratory is the lone government institution that provides calibration services in Region IV-A or in CALABARZON. RML's objective is to guarantee the safety and fair trade of both local and international markets by calibrating measuring devices and instruments used by industry and the general public. RML is also ISO/IEC 17025 certified, demonstrating that its calibration services meet the international standard for testing and calibration laboratories. However, the complexity of the preparation of calibration certificates with the increasing number of clienteles becomes the bottleneck and cause of delay in the release of certificates. RML ++ is a system which is a management software solution that optimizes the processing of documentary requirements, from the receipt of customers' measuring devices and instruments to the issuance of calibration certificates. The system was developed using the Model-Driven Architecture (MDA) that is built on the principle of abstraction, modelling reuse, and patterns to help understand standard referencing and all the mathematical calculations of the three (3) calibration certificates namely the Single Range Electronic Balance, Thermohygrometer, and Test Weights. RML ++ was able to reduce the processing time of the calibration certificates from encoding to releasing with a systematic process of the mathematical calculation of uncertainty and selection of standards.

Keywords—Calibration management system, single range electronic balance, thermohygrometer, test weights

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Cite: Jefferson L. Lerios, Rogerson A. Esmeria, Joel M. Bawica, "RML++: Development of Calibration Management System for Regional Metrology Laboratory Dost- Calabarzon, Philippines," Journal of Software, vol. 19, no. 2, pp. 64-78, 2024.

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