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GB/T 18036-2008 English PDF

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GB/T 18036-2008: The test method of thermo-emf for platinum
Status: Valid

GB/T 18036: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 18036-2008English229 Add to Cart 3 days [Need to translate] The test method of thermo-emf for platinum Valid GB/T 18036-2008
GB/T 18036-2000English319 Add to Cart 3 days [Need to translate] The test method of thermo-emf for platinum rhodium thermocouple thin wires Obsolete GB/T 18036-2000

PDF similar to GB/T 18036-2008


Standard similar to GB/T 18036-2008

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Basic data

Standard ID GB/T 18036-2008 (GB/T18036-2008)
Description (Translated English) The test method of thermo-emf for platinum
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H68
Classification of International Standard 77.120.99
Word Count Estimation 10,119
Date of Issue 2008-03-31
Date of Implementation 2008-09-01
Older Standard (superseded by this standard) GB/T 18036-2000
Quoted Standard GB/T 8170; JC/T 509; JJF 1059
Regulation (derived from) National Standard Approval Announcement 2008 No.5 (Total No.118)
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 method of measurement and comparative law silk branded platinum and rhodium thermocouple wire thermal EMF. This standard applies to platinum and rhodium thermocouple to measure the diameter of the filament is 0. 05 mm to 0. 1 mm range. Other precious metals and base subtrahend filaments thermocouple thermal emf measurements can also refer to proceed. When measured by the standard method fuses, measurable thermal emf value of 0. 5 mm diameter platinum and rhodium thermocouple wire. Other sizes of precious metal thermocouple wire thermal emf measurements can also refer to proceed.

GB/T 18036-2008: The test method of thermo-emf for platinum

---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.
The test method of thermo-emf for platinum ICS 77.120.99 H68 National Standards of People's Republic of China Replacing GB/T 18036-2000 Platinum and rhodium thermocouple filament thermal EMF measurement Posted 2008-03-31 2008-09-01 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 18036-2000 "platinum-rhodium thermocouple filament thermal EMF measurement method." This standard compared with GB/T 18036-2000, the main changes are as follows. --- Increasing the size of 0.06mm, 0.05mm the Pt wire, PtRh6 silk, PtRh10 silk, PtRh13 silk, PtRh30 wire Energizing current size and annealing annealing time; --- When measured by a fuse method, thermocouple wire size is defined as 0.5mm, 0.05mm ~ 0.1mm; --- Increased fuse measurement and comparison of measurement system schematic system diagram; --- According JJG1059-1999 standards for platinum and rhodium thermocouple filament thermal EMF measurement methods were evaluated and expressed. Appendix A of this standard is a normative appendix, Appendix B is an informative annex. The standard proposed by the National Nonferrous Metals Industry Association. This standard Nonferrous Metals by the National Standardization Technical Committee. This standard by your research Platinum Ltd. is responsible for drafting. The main drafters of this standard. Huang Shaohua, Wu Fei, Wu Qingwei, just pay. This standard replaces the standards previously issued as follows. --- GB/T 18036-2000. Platinum and rhodium thermocouple filament thermal EMF measurement

1 Scope

This standard specifies the method for measuring the fuse and comparative law platinum and rhodium thermocouple wire thermal EMF. This standard applies to the measurement of the diameter of platinum and rhodium thermocouple filaments within 0.05mm ~ 0.1mm range. Other precious metals and base metals heat Thermal EMF measuring galvanic filaments may also be referring to. At the time of the measurement method using a fuse, measurable thermal emf value platinum and rhodium thermocouple wire diameter of 0.5mm. Other sizes of precious metals Belong to thermocouple wires thermal emf measurements can also be carried out with reference to.

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 8170 numerical rounding rules JC/T 509 ceramic thermocouple protection tube JJF1059 Evaluation and Expression of Uncertainty in Measurement

3 PRINCIPLE OF THE METHOD

3.1 Fuse law According to a pure metal melting temperature constant and thermocouple intermediate metal law, with a small amount of pure gold or palladium measured thermocouple wire wound On the measurement side, warmed to thermal emf value of the platform, is measured on the thermocouple wires melting occurs, take the average of the readings as the measuring platform result. 3.2 Comparison Method Thermocouple and standard thermocouple measured bundled together in gold (1064.18 ℃) or palladium point (1554.8 ℃) temperature than the neighborhood Comparing, measuring thermal electromotive force value, calculate the results. 4 Measuring instruments, devices and materials 4.1 instruments and equipment 4.1.1 Low potential DC potentiometer. Accuracy of not less than 0.01 and its corresponding supporting devices, or other equivalent electrically similar accuracy Measuring equipment. 4.1.2 High temperature furnace. high-temperature furnace and automatic temperature-control system, furnace length of about 500mm or so, the maximum temperature should reach 1600 ℃; furnace The highest temperature area is off-center position should not exceed 20mm, its average temperature zone length should not be less than 10mm, the temperature difference should be within ± 1 ℃ of. 4.1.3 thermocouple wire annealing apparatus energized. power supply unit should be equipped with an accuracy of not less than 0.5 meter AC current governor and the like. 4.1.4 Thermocouple measuring end welding apparatus (by comparison). welding thermocouples pollution. 4.1.5 PtRh30-PtRh6 standard thermocouple (comparison method used). Even with its fuse method in gold (1064.18 ℃) and palladium point (1554.8 ℃) Temperature indexing, indexing error should be less than 0.5 ℃. 4.2 Material 4.2.1 Fuse. gold, palladium fuse purity of not less than 99.99%, and a diameter of 0.3mm, clean, soft annealed state. 4.2.2 support line. platinum wire, purity of not less than 99.95%, a diameter of 0.4mm ~ 0.5mm, clean. 4.2.3 bundle ligation. platinum wire diameter of 0.15mm, 0.25mm.

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