RADIATION EFFECTS IN PRECISION RESISTANCE THERMOMETRY: II. ILLUMINATION EFFECT ON TEMPERATURE MEASUREMENT IN WATER TRIPLE-POINT CELLS PACKED IN CRUSHED ICE
- 1 November 1966
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 44 (11) , 2653-2659
- https://doi.org/10.1139/p66-216
Abstract
The heating effect of normal laboratory illumination on the sensors of standard platinum resistance thermometers immersed in a standard water triple-point cell packed in crushed ice has been investigated. This study shows that the absorption by the platinum sensors of luminous and near-infrared radiation transmitted through the ice pack could easily amount to temperature errors as large as 0.000 5 °C. Any illumination error must be eliminated by making all measurements in the dark or under adequate radiation shielding.Keywords
This publication has 2 references indexed in Scilit:
- The Near Infrared Absorption Spectrum of Liquid WaterJournal of the Optical Society of America, 1951
- An Experimental Study of the Absolute Temperature Scale. V. The Reproducibility of the Ice Point and the Triple-Point of Water. The Temperature of the Triple-Point of WaterProceedings of the American Academy of Arts and Sciences, 1938