부산대학교 도서관

The United States National Institute of Standards and Technology (NIST) has been developing a new device for primary standard realization of torque utilizing established traceability to quantum-electrical standards following the 2019 revision of the International system of units (SIs). This device, the Electronic NIST Torque Realizer (ENTR) is a device directly traceable to the quantum-electrical standards of the revised SI with the goal of outperforming current commercial torque transducer uncertainty levels, improving torque tool calibration at low torque ranges, and shortening the torque standards dissemination chain. This project’s goal is to create a device for torque calibrations with an operational range of $7\,\, {}\times {}10^{-4}$ Nm to 1 Nm with uncertainty at or below 0.1%. We intend ENTR to be a possible replacement for present transfer standards used in the torque standards dissemination chain, easing the financial and logistical burdens of current torque standards dissemination systems.