ASTM D 1142 : 1995 : R2012
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Water Vapor Content of Gaseous Fuels by Measurement of Dew-Point Temperature
Available format(s)
PDF
Language(s)
English
Published date
06-12-2012
Superseded date
17-03-2024
Superseded by
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CONTAINED IN VOL. 05.06, 2015 Determines the water vapor content of gaseous fuels by measurement of the dew-point temperature and the calculation therefrom of the water vapor content.
| Committee |
D 03
|
| DocumentType |
Test Method
|
| Pages |
11
|
| ProductNote |
Reconfirmed 2012
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
1.1This test method covers the determination of the water vapor content of gaseous fuels by measurement of the dew-point temperature and the calculation therefrom of the water vapor content.
Note 1—Some gaseous fuels contain vapors of hydrocarbons or other components that easily condense into liquid and sometimes interfere with or mask the water dew point. When this occurs, it is sometimes very helpful to supplement the apparatus in Fig. 1 with an optical attachment that uniformly illuminates the dew–point mirror and also magnifies the condensate on the mirror. With this attachment it is possible, in some cases, to observe separate condensation points of water vapor, hydrocarbons, and glycolamines as well as ice points. However, if the dew point of the condensable hydrocarbons is higher than the water vapor dew point, when such hydrocarbons are present in large amounts, they may flood the mirror and obscure or wash off the water dew point. Best results in distinguishing multiple component dew points are obtained when they are not too closely spaced.
Note 2—Condensation of water vapor on the dew-point mirror may appear as liquid water at temperatures as low as 0 to −10°F (−18 to −23°C). At lower temperatures an ice point rather than a water dew point likely will be observed. The minimum dew point of any vapor that can be observed is limited by the mechanical parts of the equipment. Mirror temperatures as low as −150°F (−100°C) have been measured, using liquid nitrogen as the coolant with a thermocouple attached to the mirror, instead of a thermometer well.
| ASTM D 5454 : 2011 : EDT 1 | Standard Test Method for Water Vapor Content of Gaseous Fuels Using Electronic Moisture Analyzers |
| ASTM D 7904 : 2015 | Standard Test Method for Determination of Water Vapor (Moisture Concentration) in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS) |
| ASTM D 8080 : 2021 | Standard Specification for Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG) Used as a Motor Vehicle Fuel |
| ASTM D 5454 : 2011 : R2020 | Standard Test Method for Water Vapor Content of Gaseous Fuels Using Electronic Moisture Analyzers |
| ASTM D 4150 : 2021 : REV A | Standard Terminology Relating to Gaseous Fuels |
| ASTM D 8094 : 2021 | Standard Test Method for Determination of Water Content of Liquefied Petroleum Gases (LPG) Using an Online Electronic Moisture Analyzer |
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