GB/T 6147-2025Test method for thermoelectric power of precision resistance alloys (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

This document replaces GB/T 6147-2005 "Test method for thermal electromotive force rate of precision resistance alloys" and is consistent with GB/T 6147-2005.

In addition to structural adjustments and editorial changes, the main technical changes are as follows.

Added a summary of methods (see Chapter 4); a) The test equipment requirements have been changed (see Chapter 5, Chapter 5 of the 2005 edition); b) The sample requirements have been changed (see 6.1, 4.1 of the 2005 edition); c) The temperature change requirements of the thermostatic bath in the test method have been changed (see 8.4, 7.4 of the 2005 edition); d) Added polarity determination rules (see 9.4). e) Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Instrument Functional Materials (SAC/TC 419).

This document was drafted by: Chongqing Materials Research Institute Co., Ltd., Chongqing Chuanyi Automation Co., Ltd. Metal Functional Materials Branch, Shenzhen CGN Engineering Design Co., Ltd., Daya Bay Nuclear Power Operation and Management Co., Ltd., Chongqing Electronic Science and Technology Vocational University, Shenzhen Industry Zhan Electronics Co., Ltd., CGN Huizhou Nuclear Power Co., Ltd., Jiangsu Huaxin Alloy Co., Ltd., Chengdu Kaitian Electronics Co., Ltd., Zhejiang Taiso Technology Co., Ltd. and Shandong Liqun Alloy Materials Co., Ltd.

The main drafters of this document are: Meng Gang, He Lunying, Tian Guangzheng, Hu Ziyang, Chen Shuzhi, Chen Rong, Zheng Yawen, Huang Meiliang, Chen Guoyi, Wang Fangjun, Li Feng, Yuan Xinming, Chen Jie, Lu Jiong, Li Guangfeng, Sha Hongwei, Zhang Liqun, Zhu Yahui, Wu Yang, Wang Yong, Jiang Dong, Si Hengyuan, He Xiangjie, Fu Yueming, Tang Mao.

The previous versions of this document and the documents it replaces are as follows.

First published in 1985 as GB/T 6147-1985, first revised in 2005; - This is the second revision. - Precision resistance alloy thermal electromotive force rate test method

1 Scope

This document describes the test method for the thermal electromotive force rate of precision resistance alloys, including the principle, test device, specimen and preparation, test environment, environment, test procedures, data handling, precision and accuracy, and test reporting.

This document is applicable to the test of the thermal electromotive force rate of precision resistance alloys within the range of -65 °C to 250 °C. Other metal materials are The test of thermal electromotive force rate within the range is performed as reference.

2 Normative references

GB/T 2903

3 Terms and definitions

The terms and definitions defined in JB/T 6819.2 and JB/T 6819.3 and the following apply to this document.

4 Principle

The sample is paired with a standard electrode (platinum wire or copper wire) to form a thermocouple. The thermal electric field generated by each 1°C change in temperature between (t~t0) is Potential is the thermoelectric potential ratio of the alloy to platinum (or to copper).

5 Test equipment