RECENT IMPROVEMENTS IN AC-DC DIFFERENCE CALIBRATION SERVICE FOR THERMAL TRANSFER STANDARDS AT NIS, EGYPT

This paper gives a brief summary of the ac-dc difference calibration service for thermal

transfer standards at the National Institute for Standards (NIS), Egypt. Related subjects

discussed include automated calibration system, bi-lateral intercomparison (with NPL,

England), the efficiency test, a new current shunt for thermal current converters and research

into thermal transfer standard.