ASTM E2649-20 使用火花发射光谱测定密封绝缘玻璃单元中的氩浓度的标准测试方法

ASTM E2649-20 使用火花发射光谱测定密封绝缘玻璃单元中的氩浓度的标准测试方法
基本信息
标准号:ASTM E2649-20
发布单位或类别:美国-美国材料与试验协会(US-ASTM)
发布日期:2020-02-15
实施日期:
废止日期:
CCS分类:
ICS分类:
71.040.50 分析化学 – 物理化学分析方法

适用范围/摘要
1.1
本试验方法涵盖了使用火花发射光谱仪测定密封中空玻璃单元玻璃之间空间中氩气浓度的程序。
1.2
这是一种无损检测方法。
1.3
本试验方法只能在受控实验室环境中使用。
1.4
本试验方法适用于向密封中空玻璃腔内添加氩气且气体平衡为大气的中空玻璃装置。
1.5
本试验方法适用于透明双层中空玻璃。
1.6
本试验方法适用于双层中空玻璃,其中一种玻璃具有金属涂层或有色玻璃,或两者兼有,另一种玻璃为透明玻璃。
1.7
只有当玻璃的中心玻璃具有金属涂层(低发射率(低E)或反射性)且其他两种玻璃均为透明玻璃时,本试验方法才适用于三层中空玻璃。
1.8
该试验方法还包括验证试验装置读数准确性的程序。
1.9
以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考,不被视为标准值。
1.10
本标准并非旨在解决与其使用相关的所有安全问题(如有)。本标准的用户有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。
有关具体的警告声明,请参阅第节
7.
关于危险。
1.11
本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。
====意义和用途======
5.1
本试验方法旨在提供一种方法,用于在符合设备制造商说明的受控条件下测定密封中空玻璃单元中的氩气浓度。
5.2
这是一种无损检测方法,因为为了确定氩气浓度,不会破坏试样的边缘密封。然而,玻璃内表面上的一些玻璃涂层可能会损坏。
5.3
本试验方法是根据在受控实验室环境中收集的数据开发的。
5.4
该装置应用于在受控实验室环境中测定中空玻璃装置中的氩气浓度。提到
12.3
.
5.5
本试验方法可用于在中空玻璃装置进行耐久性试验之前、期间或之后测定氩气浓度。
5.6
试验方法的准确性取决于火花发射光谱仪的准确性。当测量的氩气浓度低于一定水平时,本试验方法不适用。有关给定型号的建议精度水平,请参阅分光镜制造商的文献。

1.1
This test method covers procedures for using a spark emission spectroscope to determine the concentration of argon gas in the space between the lites of a sealed insulating glass unit.
1.2
This is a non-destructive test method.
1.3
This test method shall be used only in a controlled laboratory environment.
1.4
This test method is applicable for insulating glass units where argon has been added to the sealed insulating glass cavity and the balance of the gas is atmospheric air.
1.5
This test method is applicable for clear, double-glazed insulating glass units.
1.6
This test method is applicable for double-glazed insulating glass units with one lite having a metallic coating or tinted glass, or both, and with clear glass as the other lite.
1.7
This test method is applicable for triple-glazed insulating glass units only when the center lite of glass has a metallic coating (either low emissivity (low E) or reflective) and both of the other lites are clear glass.
1.8
This test method also includes a procedure for verifying the accuracy of the readings of the test apparatus.
1.9
The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
1.10
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
For specific warning statements, refer to Section
7
on Hazards.
1.11
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
====== Significance And Use ======
5.1
This test method is intended to provide a means for determining the concentration of argon in sealed insulating glass units under controlled conditions in compliance with the apparatus manufacturer’s instructions.
5.2
This is a non-destructive test method in that the edge seal of the test specimen is not breached in order to determine the argon gas concentration. However, damage to some glass coatings on the inner surfaces of the glass can occur.
5.3
This test method has been developed based on data collected in a controlled laboratory environment.
5.4
The device shall be used to determine the argon gas concentration in insulating glass units in a controlled laboratory environment. Refer to
12.3
.
5.5
This test method may be used to determine the argon gas concentration before, during, or after the insulating glass unit is subjected to durability tests.
5.6
The accuracy of the test method is dependent upon the accuracy of the Spark Emission Spectroscope. When the concentration of the argon being measured is below certain levels, this test method is not applicable. See the spectroscope manufacturer’s literature for recommended levels of accuracy of a given model.

研制信息
起草单位:

起 草 人:

归口单位:
E06.22

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