GB/T 36010-2018 in English
VALIDPlatinum-40%rhodium/platinum-20%rhodium thermocomouple wires and temperature-electromotive force(EMF)tables
- Issued on:2018-03-15
- Implemented on:2018-10-01
- File Format:PDF
- Delivery:Within 1 day
$218.00
《GB/T 36010-2018铂铑40-铂铑20热电偶丝及分度表》由TC419（全国仪表功能材料标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
Analysis of the core content of the standard
GB/T 36010-2018 stipulates a full set of technical specifications for Pt40-Pt20 thermocouple wire, including:
- Chemical composition: positive electrode Pt60Rh40, negative electrode Pt80Rh20
- Upper temperature limit: long-term use 1750℃, short-term use 1850℃
- Accuracy level: thermal electromotive force tolerance ±11μV at 1200℃
Comparison of key technical indicators
| Parameters | Platinum-rhodium 40 wire | Platinum-rhodium 20 wire |
|---|---|---|
| Uneven thermal emf (1200℃) | ≤8μV | ≤10μV |
| Resistivity (20℃) | 17.5μΩ·cm | 20.8μΩ·cm |
| Melting point | 1945℃ | 1900℃ |
Thermo-emf characteristics analysis
Standard Appendix B provides a complete graduation table calculation formula:
E(t)=∑i=0nciti
Typical temperature performance:
- Nominal value 505μV at 600℃, tolerance ±3μV
- Nominal value 3229μV at 1500℃, tolerance ±16μV
- Nominal value 4431μV at 1768.1℃ (platinum point), tolerance ±25μV
Stability test requirements
After continuous use in air at 1500℃ for 200 hours:
- Thermoelectric potential change ≤20μV
- Equivalent to temperature change ≤4.6℃
Test method: According to GB/T 16701-2010, annealing treatment and same pole comparison method are required.
Implementation Recommendations
Selection Guide
Select the wire diameter according to the application scenario:
- Conventional industrial measurement: 0.5mm diameter (tolerance ±0.015mm)
- Ultra-high temperature environment: it is recommended to add a protective sleeve
Maintenance Points
- Regularly check the thermoelectric potential at key temperature points
- Avoid mechanical bending to cause uneven thermoelectric potential
- Keep in moisture-proof packaging during storage
Technology Evolution Background
Main improvements of this standard compared with the previous generation:
- Added 1768.1℃ platinum point detection method
- Refine the detection process of uneven thermoelectric potential
- Additional physical parameters appendix (density, resistivity, etc.)
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 19146-2010 in English
Infrared devices for instant screening of human skin temperature
2010-09-02 -
GB/T 36016-2018 in English
Sheathed continuous thermocouple cables and sheathed continuous thermocouple
2018-03-15 -
GB/T 25482-2010 in English
Automatic closed flashpoint analyzer
2010-12-01 -
GB/T 4989-2013 in English
Extension and Compensating Cables for Thermocouples
2013-12-31 -
GB/T 19900-2005 in English
Dimensions of metal - Sheathed thermometer elements
2005-09-09 -
GB/T 34035-2017 in English
Field test methods for thermocouples
2017-07-31 -
GB/T 2614-2010 in English
Nickel-Chromium/Nickel-Silicon thermocouple wires
2010-12-01 -
GB/T 17615-2015 in English
Nickel-Chromium-Silicon/Nickel-Silicon-Magnesium thermocouple wires
2015-05-15 -
GB/T 30429-2013 in English
Industrial thermocouple assemblies
2013-12-31 -
GB/T 30090-2013 in English
Standard guide for temperature electromotive force(emf)tables for non-letter designated thermocouple combinations
2013-12-17
