01_06_86 - CONVERSION OF TEMPERATURES FROM THE 1948 AND...

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CONVERSION OF TEMPERATURES FROM THE 1948 AND 1968 SCALES TO ITS-90 This table gives temperature corrections from older scales to the current International Temperature Scale of 1990 (see the preceding table for details on ITS-90). The first part of the table may be used for converting Celsius temperatures in the range -180 to 4000°C from IPTS-68 or IPTS-48 to ITS-90. Within the accuracy of the corrections, the temperature in the first column may be identified with either t 68 , t 48 , or t 90 . The second part of the table is designed for use at lower temperatures to convert values expressed in kelvins from EPT-76 or IPTS-68 to ITS-90. The references give analytical equations for expressing these re- lations. Note that Reference 1 supersedes Reference 2 with respect to corrections in the 630 to 1064°C range. References 1. Burns, G. W. et al., in Temperature: Its Measurement and Control in Science and Industry , Vol. 6, Schooley, J. F., Ed., American Institute of Physics, New York, 1993. 2. Goldberg, R. N. and Weir, R. D., Pure and Appl. Chem., 1545, 1992. t /°C t 90 t 68 t 90 t 48 –180 0.008 0.020 –170 0.010 0.017 –160 0.012 0.007 –150 0.013 0.000 –140 0.014 0.001 –130 0.014 0.008 –120 0.014 0.017 –110 0.013 0.026 –100 0.013 0.035 –90 0.012 0.041 –80 0.012 0.045 –70 0.011 0.045
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This note was uploaded on 02/04/2011 for the course CHEM 101 taught by Professor Dr.n during the Spring '10 term at McMaster University.

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01_06_86 - CONVERSION OF TEMPERATURES FROM THE 1948 AND...

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