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Session:

5B - Electro-Optics II 

Date & Time:

Tuesday August 8, 2:30 PM - 4:00 PM

Paper Title:

Crosscheck On Realisation of Illuminance Scale Between NML-SIRIM & KRISS 

 

 

Speaker:

Mr. Mohd Nizam Abdullah  

CoAuthors:

Mohd Nizam Abdullah, Abdul Rashid Zainal Abidin, Md Nor Md Chik, Yong-Wan Kim, Seung-Nam Park 

Speaker Info

Company:

SIRIM

Department:

National Metrology Laboratory

Address:

Lot PT 4803 Bandar Baru , Salak Tinggi
Sepang, Selangor, Malaysia, 43900, United Kingdom

Phone:

603-87781644

Fax:

603-87781616

Email:

mnizam@sirim.my 

 

 

Abstract:

We crosschecked illuminance realisations between NML-SIRM and KRISS. The illuminance scale of NML-SIRIM is traceable to NPL, UK, by annually calibrating photometers and luminous intensity lamps. To prepare an artefact for the crosscheck, at KRISS, we measured spectral responsivity of a photometer using a spectral responsivity comparator traceable to a cryogenic radiometer. The external aperture area of the photometer was measured using a two-axis translator with a microscope. Through this approach, preparation of artefacts is crucial in respective of spectral responsivity scale. Uncertainty of the artefact photometer is less than 0.5 % (k=2) in terms of illuminance responsivity. The setup and procedure for the crosscheck is described in detail.  

 

 

 

 

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