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GB/T 19198-2008: Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper
Status: Valid GB/T 19198: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 19198-2008 | English | 209 |
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Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper
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GB/T 19198-2008
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| GB/T 19198-2003 | English | 319 |
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Precious metals and their alloys of platinum thermal electromotive force test methods
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GB/T 19198-2003
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PDF similar to GB/T 19198-2008
Basic data | Standard ID | GB/T 19198-2008 (GB/T19198-2008) | | Description (Translated English) | Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H68 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 9,930 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-09-01 | | Older Standard (superseded by this standard) | GB/T 19198-2003 | | Quoted Standard | GB/T 5977; GB/T 8170; JJF 1059 | | Regulation (derived from) | National Standard Approval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 precious metals and their alloys in the temperature range of 0��C ~ 300��C for platinum thermal emf measurement method. Provisions of the precious metals and their alloys in the temperature range of 0��C ~ 200��C copper thermal EMF measurement method. This standard applies to precious metals and their alloys measurements in the temperature range of 0��C ~ 300��C for platinum thermal electric forces, apply to precious metals and their alloys measurements in the temperature range of 0��C ~ 200��C thermal EMF of copper. Other types of metals and alloys of platinum or copper thermal electromotive force measurements may also refer to proceed. | GB/T 19198-2008: Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper
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Testing method for thermo-electromotive force of precious metals and their alloys pair up with platinum or copper
ICS 77.120.99
H68
National Standards of People's Republic of China
Replacing GB/T 19198-2003
Precious metals and their alloys of platinum,
The method for measuring the thermal emf of copper
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 19198-2003 "Test Method for precious metals and their alloys platinum thermal electromotive force."
This standard compared with GB/T 19198-2003, the main changes are as follows.
--- The standard name was changed to "precious metals and their alloys of platinum, copper thermal EMF measurement method";
--- Increased precious metals and their alloys measured in the temperature range of 0 ℃ ~ 200 ℃ copper thermal electromotive force;
--- Increasing the comparison electrode copper purity, size;
--- Increase the comparison electrode wire cleaning, annealing treatment;
--- Compared with the original standards were editorial changes in the text as well as a schematic aspect.
Appendix A of this standard is the data appendix.
The standard proposed by China 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 Qingwei, Wu Fei, Fu Gang.
This standard replaces the standards previously issued as follows.
--- GB/T 19198-2003.
Precious metals and their alloys of platinum,
The method for measuring the thermal emf of copper
1 Scope
This standard specifies the precious metals and their alloys in the temperature range of 0 ℃ ~ 300 ℃ measurement methods platinum thermal electromotive force, the provisions of the expensive
Metals and their alloys in the temperature range of 0 ℃ ~ 200 ℃ copper thermal EMF measurement method.
This standard applies to measuring precious metals and their alloys in the temperature range of 0 ℃ ~ 300 ℃ thermal EMF of platinum; for precious metals
Its alloys measured in the temperature range of 0 ℃ ~ 200 ℃ 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 ℃) ≥1.3920,
W (100 ℃) 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 ℃, 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
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