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GB/T 5977-2019 English PDF

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GB/T 5977-2019: Platinum wires for resistance thermometers
Status: Valid

GB/T 5977: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 5977-2019English439 Add to Cart 5 days [Need to translate] Platinum wires for resistance thermometers Valid GB/T 5977-2019
GB/T 5977-1999English479 Add to Cart 3 days [Need to translate] Platinum wires for resistance thermometers Obsolete GB/T 5977-1999
GB/T 5977-1986EnglishRFQ ASK 3 days [Need to translate] Platinum wires for resistance thermometers Obsolete GB/T 5977-1986

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Basic data

Standard ID GB/T 5977-2019 (GB/T5977-2019)
Description (Translated English) Platinum wires for resistance thermometers
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N05
Classification of International Standard 17.200.20
Word Count Estimation 22,243
Date of Issue 2019-05-10
Date of Implementation 2019-12-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 5977-2019: Platinum wires for resistance thermometers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Platinum wires for resistance thermometers ICS 17.200.20 N05 National Standards of People's Republic of China Replace GB/T 5977-1999 Resistance thermometer with platinum wire Published on.2019-05-10 2019-12-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 5977-1999 "Platinum wire for resistance thermometer", compared with GB/T 5977-1999, the main technical changes as follows. --- Increase the range of platinum resistance temperature sensing components (see Chapter 1); --- Added 2A platinum wire requirements (see Table 1, Table 2, Table 4, Table 5); --- Increased the specification of the diameter of 0.015mm (see Table 2); --- Increased the requirements for auxiliary detection equipment transfer switches, freezing point slots, and thermostatic baths (see 6.3.1.3); --- Modified the melting point of platinum wire to 1769 ° C (see Table A.1); --- Increased the resistance-temperature relationship using the.1990 International Temperature Scale (ITS-90), equivalent to IEC 60751.2008, resistance-temperature Index table (see Appendix B). This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Instrument Functional Materials Standardization Technical Committee (SAC/TC419). This standard was drafted. Chongqing Materials Research Institute Co., Ltd., Chongqing Chuanyi Automation Co., Ltd. Metal Functional Materials Branch, Anhui Tiankang (Group) Co., Ltd., Ningbo Aosaki Automation Instrumentation Co., Ltd. The main drafters of this standard. Liu Qingbin, Wu Baoan, He Lunying, Mao Wen, Xu Yonghong, Sun Wei, Zhang Chi, Yang Xiaoliang, Wu Yang, Zhang Lixin, Tang Huiyi. The previous versions of the standards replaced by this standard are. ---GB/T 5977-1986, GB/T 5977-1999; ---GB/T 5978-1986. Resistance thermometer with platinum wire

1 Scope

This standard specifies the classification, technical requirements, test methods, inspection rules, supply methods, packaging and markings of platinum wire products for resistance thermometers. This standard applies to the manufacture of standard platinum resistance thermometers, industrial platinum resistance temperature sensing elements, industrial platinum thermal resistance, standard platinum resistance thermometers Wire, industrial platinum thermal resistance leads and other instrumentation platinum wire.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. JB/T 6819.2 Instrument Material Terminology Temperature Measuring Material IEC 60751.2008 industrial platinum resistance thermometer and platinum temperature sensor (Industrialplatiniumresistancethermometer) Andplatinumtemperaturesensors)

3 Terms and definitions

The following terms and definitions defined by JB/T 6819.2 apply to this document. 3.1 Resistance ratio resistanceratio Wt The resistance ratio Wt is defined by equation (1). Wt= Rt Rtp (1) In the formula. Rt --- the resistance value of platinum wire at temperature t, in ohms (Ω); Rtp---the resistance value of platinum wire at water triple point temperature tp, in ohms (Ω). This resistance ratio is suitable for No. 1 platinum wire. 3.2 Temperature coefficient of resistance temperaturecoefficientofresistance The temperature coefficient of resistance α is defined by equation (2). α= R100-R0 R0·100°C (2) In the formula. R100---the resistance value of platinum wire at temperature t=100°C, the unit is ohm (Ω); R0 --- The resistance value of platinum wire at temperature t=0 ° C, in ohms (Ω). The temperature coefficient of resistance is applicable to platinum wires 2A, 2, 3, 4, and 5.

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5977-2019 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.