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

للكاتب

Mamdouh M. Halawa

Electrical Metrology Department, National Institute for Standards (NIS)

Tersa St., Giza, El-Ahram, Box: 136, Code: 12211, Egypt

ABSTRACT

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.

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