ITS-90

ITS-90

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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These equations are called ITS-90 inverse polynomials because they determine temperature from voltage.
The realization of the International Temperature Scale of 1990 (ITS-90) at METROSERT (Fig.
For example, our lowest temperature of 24.5561 K is the value assigned to the triple point of neon in the International Temperature Scale of 1990 (ITS-90) (34).
The worldwide consistent temperature measurement is assured by the International Temperature Scale of 1990 (ITS-90), which extends from 0.65 K to the highest temperatures, measurable with the aid of Planck's radiation law.
These estimates of [delta][DELTA][T.sub.pp] include a contribution associated with the ITS-90 thermocouple inverse polynomials (e.g., Omega [2004]).
Hart adds that Met/Temp II also enables users to perform ITS-90 coefficient and residual calculations and generate corresponding tables and reports.
PRTs may be read using the standard DIN curve or individually calibrated probes may use ITS-90 coefficients for higher accuracy.
These databooks are denoted as: 1 - Realising ITS-90, Primary Laboratory; 2 - Secondary Laboratory Equipment; 3 - Industrial Laboratory Equipment; 4 - Blackbody and Thermocouple Reference Equipment; and 5 - Training and Services.
IF97 is based on the latest standard temperature scale, ITS-90, which is a small improvement toward better representing physical reality.

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