JJF 1176-2007_English: PDF (JJF1176-2007)
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Calibration Specification for (0~1500) Celsius Tungsten-Rhenium Thermocouples
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JJF 1176-2007
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JJF 1176-2007
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| Standard ID | JJF 1176-2007 (JJF1176-2007) | | Description (Translated English) | Calibration Specification for (0~1500) Celsius Tungsten-Rhenium Thermocouples | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A54 | | Classification of International Standard | 17.200 | | Word Count Estimation | 18,186 | | Date of Issue | 2007/2/28 | | Date of Implementation | 2007-08-28 | | Older Standard (superseded by this standard) | JJG 576-1988 | | Quoted Standard | GB/T 16839.1-1997; JB/T 9497-2002 | | Drafting Organization | Beijing measurement detection Scientific Academy | | Administrative Organization | National Temperature Measurement Technology Committee | | Regulation (derived from) | AQSIQ Announcement No. 41 of 2007 | | Issuing agency(ies) | State Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to measurement range of 0��C ~ 1500��C with a removable protective tube without tungsten rhenium thermocouple calibration. Without protective tube tungsten rhenium thermocouple calibration can also be carried out with reference to this specification. | JJF 1176-2007
Calibration Specification for (0 ~ 1500) Celsius Tungsten-Rhenium Thermocouples
People's Republic of China National Metrology Technical Specifications
(0 ~ 1500) ℃ tungsten-rhenium thermocouples
Calibration Specification
CalibrationSpecificationfor (0 ~ 1500) ℃
Posted 2007-02-28
2007-08-28 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
(0 ~ 1500) ℃ tungsten-rhenium thermocouples
Calibration Specification
CalibrationSpecificationfor (0 ~ 1500) ℃
les
Instead of JJG576-1988
This specification by the State Administration of Quality Supervision, Inspection and Quarantine, 2007 February 28 ratification and
From August 28, 2007 into effect.
Focal point. the National Technical Committee of temperature measurement
Main drafting unit. Beijing Institute of Metrology detection
Participated in the drafting unit. Beijing Tungsten & Molybdenum Material Factory
This specification temperature measured by the National Technical Committee is responsible for interpretation
The main drafters of this specification.
History Qufei (Beijing Institute of Metrology detection)
Zhang afterburner (Beijing Institute of Metrology detection)
Drafters participate.
Li Xiaoqi (Beijing Tungsten & Molybdenum Material Factory)
Li Ping Shan (Beijing Tungsten & Molybdenum Material Factory)
Wu Jian (Beijing Institute of Metrology detection)
Zhang Ke (Beijing Institute of Metrology detection)
Wu Yun (Beijing Institute of Metrology detection)
table of Contents
1 Scope (1)
2. Referenced Documents (1)
3 Terms (1)
4 Overview (1)
5 Metrological characteristics (1)
6 calibration conditions (1)
7 calibration items and calibration methods (2)
Expression 8 calibration results (5)
9 Recalibration interval (5)
Appendix A tungsten-rhenium thermocouple compensation wire (6)
Appendix B of tungsten and rhenium S, B type thermocouple 100th degrees Celsius thermal emf (E), differential thermal electromotive force (S)
Indexing table (7)
Appendix C tungsten rhenium thermocouple 1000 ℃ thermal emf measurement results Uncertainty Evaluation Example (8)
Appendix D tungsten-rhenium thermocouples calibration record format (12)
Appendix E tungsten rhenium thermocouple calibration certificate within the page format (13)
(0 ~ 1500) ℃ tungsten rhenium thermocouple calibration specification
1 Scope
This standard applies to the measurement range of 0 ℃ ~ 1500 ℃ with a protective tube without removable tungsten-rhenium thermocouples (to
Hereinafter referred to as thermocouple) calibration. Tungsten rhenium thermocouple calibration without protective tube may also refer to this specification.
2 Citations
GB/T 16839.1-1997 "Thermocouples Part 1. indexing table"
JB/T 9497-2002 "tungsten-rhenium thermocouple wire and indexing table"
When using this specification it should be noted that using the currently valid version of the documents cited.
3 Terms
Non-removable tungsten-rhenium thermocouples non-disassemblyTungsten-RheniumThermocouples
Hot electrode assembly can not be removed from the tube to work with tungsten rhenium thermocouples.
4 Overview
Tungsten-rhenium thermocouples by indexing number is divided into 3- tungsten-rhenium tungsten rhenium and tungsten-rhenium thermocouples 25 5- 26 tungsten-rhenium thermocouples.
Wherein the positive electrode thermocouple nominal composition containing 97% tungsten, 3% rhenium, the negative electrode containing a nominal composition of 75% tungsten, rhenium
25%, indexing number WRe3-WRe25; positive nominal composition of 95% tungsten, rhenium 5%, the negative nominal composition of
74% tungsten, rhenium 26%, sub-degree No. WRe5-WRe26.
Working with a tungsten-rhenium thermocouples according to environmental conditions are divided into protective alumina tube with a tungsten-rhenium thermocouples work (for
Conventional environmental conditions) and molybdenum and other easily oxidized material protective tube work with tungsten-rhenium thermocouples (suitable for vacuum and restore
Conditions).
5 Metrological characteristics
Thermocouple t
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