SPECTRAL RESPONSIVITY MEASUREMENT OF KIM-LIPI STANDARD RADIATION THERMOMETER TRACEABLE TO ABSOLUTE CRYOGENIC RADIOMETER

AdityaAchmadi, HelmiZaini, HidayatWiriadinata, Seung-Nam Park, GhufronZaid

Abstract

Measurement of spectral responsivity of KIM-LIPI standard radiation thermometer had been conducted. With several adjustments, the absolute cryogenic radiometer (ACR) setup was utilized as a primary spectral responsivity comparator to carry out the measurement. Output of double monochromator was redirected to enable the measurement. Additional voltmeter is installed in front of the available less accurate meter of the ACR setup to read the low level signal and provide analog output with enough accuracy. The setup provides a good quality of spectrally-selected light for this purpose without the need install a completely new spectral comparator facility. A dynamic range of up to 10⁶ was achieved from the spectral responsivity measurement. The Full-width half maximum (FWHM) of the spectral response is 15 nm, which is 1 nm wider than the stated specification of the filter. Further work is being carried out to improve the accuracy of the monochromator wavelength scale.

Keywords

spectral responsivity, radiation thermometer, fixed-point, temperature

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IMEKO-WC-2012-TC12-P8.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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