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ASTM D2685-11

Standard Test Method for Air and Carbon Tetrafluoride in Sulfur Hexafluoride by Gas Chromatography

Automaticky preložený názov:

Štandardná skúšobná metóda pre leteckú a Carbon fluorid v fluorid sírový plynovou chromatografiou

NORMA vydaná dňa 1.5.2011

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Dostupnosť	SKLADOM
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Informácie o norme:

Označenie normy: ASTM D2685-11
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.5.2011
Kód tovaru: NS-21151
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

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Anotácia textu normy ASTM D2685-11 :

Keywords:

air, carbon tetrafluoride, sulfur hexafluoride, Air analysis, Carbon tetrafluoride content, Electrical insulating gases--sulfur hexafluoride, Gas chromatography (GC)--insulating materials/applications, Impurities, Nitrogen content, Sulfur hexafluoride (electrical insulating gas), ICS Number Code 71.060.50 (Salts)

Doplňujúce informácie

Significance and Use

Air and carbon tetrafluoride (CF₄) are two contaminants of interest in sulfur hexafluoride (SF₆). Both of these contaminants adversely affect the performance of SF₆ when used as an electrical insulating gas. Specification for maximum levels of these contaminants are given in Specification D2472.

Gas chromatography is used to separate these contaminants from a sample of SF₆ and to determine their concentration.

1. Scope

1.1 This test method covers the determination of air (Note 1) and carbon tetrafluoride as impurities in sulfur hexafluoride.

Note 1—Nitrogen, oxygen, or any of their mixtures is considered to be air. Commercial grade air or nitrogen is used for standardization.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

E260-96(2019)	Standard Practice for Packed Column Gas Chromatography
D2472-15(2023)	Standard Specification for Sulfur Hexafluoride
E355-96(2021)e1	Standard Practice for Gas Chromatography Terms and Relationships (Includes all amendments and changes 4/28/2021).