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GB/T 4993-2010: Nickel-Chromium/Copper-Nickel (Constantan) thermocouple wires
Status: Valid GB/T 4993: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4993-2010 | English | 299 |
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Nickel-Chromium/Copper-Nickel (Constantan) thermocouple wires
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GB/T 4993-2010
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| GB/T 4993-1998 | English | 479 |
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Nickel-Chromium/Copper-Nickel (Constantan) thermocouple wires
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GB/T 4993-1998
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| GB/T 4993-1985 | English | RFQ |
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Nickel-chromium/copper-nickel (constantan) thermocouple wires and reference table
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GB/T 4993-1985
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PDF similar to GB/T 4993-2010
Basic data | Standard ID | GB/T 4993-2010 (GB/T4993-2010) | | Description (Translated English) | Nickel-Chromium/Copper-Nickel (Constantan) thermocouple wires | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N11 | | Classification of International Standard | 17.200.20 | | Word Count Estimation | 13,165 | | Date of Issue | 2010-12-01 | | Date of Implementation | 2011-05-01 | | Older Standard (superseded by this standard) | GB/T 4993-1998 | | Quoted Standard | GB/T 16701; GB/T 16839.1; JB/T 6819.2 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 9, 2010 (No. 164 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the nickel-chromium copper-nickel (constantan) thermocouple wire product classification, technical requirements, test methods, inspection rules, modes of supply, packaging and marking. This standard applies to the manufacture of industrial nickel-chromium copper-nickel (constantan) thermocouple (E type thermocouple) alloy wire (hereinafter referred to as dual wire). | GB/T 4993-2010: Nickel-Chromium/Copper-Nickel (Constantan) thermocouple wires---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.
Nickel-Chromium/Copper-Nickel (Constantan) thermocouple wires
ICS 17.200.20
N11
National Standards of People's Republic of China
Replacing GB/T 4993-1998
Nickel-chromium - copper-nickel (constantan) thermocouple wire
Issued on. 2010-12-01
2011-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 4993-1998 "nickel-chromium - copper-nickel (constantan) thermocouple wire";
This standard compared with GB/T 4993-1998, the main differences are as follows.
--- Thermal EMF reference ASTME230-2003 tolerance requirements modified and GB/T 4993-1998 thermal EMF allowed
The difference is used in IEC 584-2.1995 requirements.
--- According to GB/T 1.1-2000 and GB/T 20000.3-2003 standard requirements made of the original edit, modify text on.
Appendix A of this standard and Appendix B is an informative annex.
The standard proposed by China Machinery Industry Federation.
The standard instrument functional materials by the National Standardization Technical Committee (SAC/TC419) centralized.
This standard is drafted by. Chongqing Instrument Materials Research Institute.
Participated in the drafting of this standard. Jiangsu Huaxin Alloy Co., Ltd., Yueqing City, east China Factory Changzhou Lucheng Albert Alloy Factory, Shaoxing Chun
Hui Automation Instrumentation Co., Ltd., Chongqing Sichuan Instrument Automation Co., Ltd. Metallic Functional Materials Branch, Anhui Rand Group Company Limited
Division, Texas Qunli Alloy Material Co., Ltd.
The main drafters of this standard. Chen Lixin, Ho Ying-lun, Yuan Qin Hua, Wu Xinghua, Wang Bowei, Zou Hua, Lee joint text, Wang Fang high tension group.
This standard replaces the previous version of the standard release of case.
--- GB/T 4993-1985, GB/T 4993-1998.
Nickel-chromium - copper-nickel (constantan) thermocouple wire
1 Scope
This standard specifies the nickel-chromium - copper-nickel (constantan) thermocouple wire product classification, technical requirements, test methods, inspection rules, modes of supply, including
Installation and flag.
This standard applies to the manufacture of industrial nickel-chromium - copper-nickel (constantan) thermocouple (E thermocouple) alloy wire (hereinafter referred to as dual wire).
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 16701 precious metal, metal thermocouple wire Thermal EMF Test Method
GB/T 16839.1 Thermocouples - Part 1. indexing table
JB/T 6819.2 meter material term temperature materials
3 Terms and Definitions
Terms and definitions JB/T 6819.2 established apply to this standard.
4 Products
4.1 Product name, code and the name of the chemical composition shown in Table 1.
Table 1 Categories and nominal chemical composition
Product Name polarity code
Nominal chemical composition (mass fraction) /%
Ni Cr Cu
Nichrome wire cathode EP 90 10 -
Copper-nickel alloy wire negative EN 45 - 55
4.2 grade thermocouple wire
Thermocouple wire according to requirements and thermoelectric properties were divided into grade Ⅰ, grade Ⅱ and Ⅲ grade.
4.3 dual wire recommended upper temperature limit
Thermocouple wire of various diameters recommended upper temperature limit as shown in Table 2.
Table 2 dual wire recommended upper temperature limit
Thermocouple wire diameter
mm
Long-term use temperature limit
Short-term use temperature limit
0.3, 0.5, 350 450
0.8,1.0,1.2 450,550
1.6, 2.0 550 650
2.5 650 750
3.2 750 900
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