Establishment of AC-DC transfer standard at SASO-NMCC

(NMCC, SASO, KSA) National Measurement and Calibration Center

Published online: 7 April 2025

Abstract

This paper documents the achievements of traceability and the technical evaluation of the newly established AC-DC Difference calibration service for AC voltage measurements at the NMCC, KSA. It gives details on the establishment and functioning of a new automatic calibrating system. This paper also includes instructions for the expanding uncertainty associated with the calibration system. Nevertheless, this study provides extensive review of heat converters and AC-DC difference measurements. The GULFMET.EM-S3 Supplementary Comparison data show the new system’s capabilities, which cover the 2mV to 1000V @ 10Hz to 1MHz range. It also describes the new capabilities of AC-DC difference calibration services and the accomplishment of traceability for AC voltage measurements by the NMCC in Saudi Arabia. It explains the installation and functioning of auto-calibrating system. This paper also guides the construction of calibration systems and the related extended uncertainty. Although it is not very detailed, this document gives an idea of what heat converters and AC-DC difference measurements are all about—the results of the GULFMET.EM-S3 Supplementary Comparisons are used to show what the new system is capable of. These capabilities range from 10 Hz to 1 MHz and 2 mV to 1000 V.