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- Title
Recalibration of working standard lamps.
- Authors
El-Moghazy, E. M.; EL-Sharkawy, F. M.; Abd-Elmageed, Alaa-Eldin
- Abstract
In the present work, recalibration of the National Institute for Standards (NIS, Egypt) working standard lamps from Osram Inc. and their associated expanded uncertainty budget were done. A set-up composed of an integrating sphere, a standard photometer and a group of five luminous flux standard lamps ranged from 25 to 200 W calibrated and traceable to the National Physical Laboratory (NPL, UK) is used to measure and recalibrate the total luminous flux for these five working standard lamps. After recalibration, NIS (Egypt) maintains the national scales for luminous flux in lumen.
- Subjects
LAMPS; STANDARDS; PHOTOMETERS; LUMINOUS flux; SPHERICAL aberration
- Publication
Journal of Measurement Science & Instrumentation, 2016, Vol 7, Issue 3, p291
- ISSN
1674-8042
- Publication type
Article
- DOI
10.3969/j.issn.1674-8042.2016.03.014