GB/T 19198-2008Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper (English PDF)
贵金属及其合金对铂、对铜热电动势的测量方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 31, 2008
Implementation date
September 1, 2008
Scope
GB/T 19198-2008 is the English-translated version of 贵金属及其合金对铂、对铜热电动势的测量方法.
GB/T 19198-2008 is the Chinese standard "Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper".
Its scope clause reads: This standard specifies the precious metals and their alloys in the temperature range of 0 °C ~ 300 °C measurement methods platinum thermal electromotive force, the provisions of the expensive Metals and their alloys in the temperature range of 0 °C ~ 200 °C copper thermal EMF measurement method.
This standard applies to measuring precious metals and their alloys in the temperature range of 0 °C ~ 300 °C thermal EMF of platinum; for precious metals Its alloys measured in the temperature range of 0 °C ~ 200 °C copper thermal electromotive force.
Other types of metals and their alloys or platinum Measurement of the thermal emf of copper may also be referring to. Its clauses include principle of the method; materials.
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Document preview — GB/T 19198-2008
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 68
- Replacing
- GB/T 19198-2003
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 PRINCIPLE OF THE METHOD
- 4 Materials
1 Scope
This standard specifies the precious metals and their alloys in the temperature range of 0 °C ~ 300 °C measurement methods platinum thermal electromotive force, the provisions of the expensive
Metals and their alloys in the temperature range of 0 °C ~ 200 °C copper thermal EMF measurement method.
This standard applies to measuring precious metals and their alloys in the temperature range of 0 °C ~ 300 °C thermal EMF of platinum; for precious metals
Its alloys measured in the temperature range of 0 °C ~ 200 °C copper thermal electromotive force. Other types of metals and their alloys or platinum
Measurement of the thermal emf of copper may also be referring 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 5977 resistance thermometers with platinum wire
GB/T 8170 digital rounding rules
JJF1059 Evaluation and Expression of Uncertainty in Measurement
3 PRINCIPLE OF THE METHOD
(1) (2)
Where.
4 Materials
4.1 standard electrode
Platinum wire, diameter 0.2mm ~ 1mm, a length of 800mm ~ 1000mm. Flag purity amount W (100 °C) >=1.3920,
W (100 °C) measured according to GB/T 5977 carried out. Pure platinum wire first with 30% hydrochloric acid solution boiling 15min, after removing the cook with distilled water
Boil several times, until the solution was neutral. The clean platinum wire suspended power-annealing device for annealing, platinum wire surface temperature annealing
Shall be not less than 1100 °C, no less than 2h.
4.2 copper
Diameter 0.2mm ~ 1mm, a length of 800mm ~ 1000mm. Copper purity not less than 99.99%. First with copper wire […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 19198
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 19198-2008 | Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper | current edition | Current |
| GB/T 19198-2003 | Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper | previous edition | Superseded |
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