Comparative results for germanium and platinum thermometer calibration test data approximation

被引：2

作者：

Bogdanova, NB ^{[1
]}

Terzijska, BM ^{[1
]}

机构：

[1] INST SOLID STATE PHYS,BU-1784 SOFIA,BULGARIA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1997年 / 68卷 / 10期

关键词：

D O I：

10.1063/1.1148024

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Three-interval approximations of T=f(R) and R=g(T) functions for germanium resistance thermometer (GRT) (1.4-5.7) K; (5.7-27.4) K; (27.4-100) K and platinum resistance thermometer (PRT) (14-31) K; (31-95) K; (95-325) K is carried out, using a weighted orthonormal polynomial expansion method (OPEM). A two-interval OPEM approximation of T(R) and R(T) functions for PRT (14-70) K; (70-325) K is also presented. Our OPEM approximation of the T(R) function for the GRT and PRT, compared with other descriptions, based on Chebyshev or ordinary polynomials with the same calibration test data is discussed also. The results, shown in tables and figures, demonstrate the reliability and the advantages of the proposed OPEM, in cryogenic thermometry. (C) 1997 American Institute of Physics.

引用

页码：3766 / 3771

页数：6

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