Mercury-in-Glass Thermometers for Precise Temperature Measurements Near 0°C
Open Access
- 1 January 1979
- journal article
- instruments and-methods
- Published by Cambridge University Press (CUP) in Journal of Glaciology
- Vol. 22 (87) , 385-388
- https://doi.org/10.1017/S0022143000014350
Abstract
Experience with the calibration and field use of mercury-in-glass calorimeter thermometers provides an indication of the accuracy attainable and the necessary corrections to obtain that accuracy. Secular changes as large as 57 mK have been observed during the first three years of thermometer use. Light physical tapping is found to reduce the thermometer readings by 3–6 mK. Corrections for variations in the external and internal bulb pressure and care to avoid parallax are necessary to obtain the best accuracy in field measurements. The best accuracy obtainable with these thermometers for temperature measurements near 0°C is approximately ±4 mK for laboratory measurements and ±5 mK for field measurements.Keywords
This publication has 1 reference indexed in Scilit:
- 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