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ASTM D4888-20

Current Revision

Standard Test Method for Water Vapor in Natural Gas Using Length-of-Stain Detector Tubes

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1.1 This test method covers a procedure for rapid and simple field determination of water vapor in natural gas pipelines. Available detector tubes provide a total measuring range of 0.1 to 40 mg/L, although the majority of applications will be on the lower end of this range (that is, under 0.5 mg/L). At least one manufacturer provides tubes that read directly in pounds of water per million cubic feet of gas. See Note 1.

1.2 Detector tubes are usually subject to interferences from gases and vapors other than the target substance. Such interferences may vary among brands because of the use of different detection methods. Consult manufacturer's instructions for specific interference information. Alcohols and glycols will cause interferences on some water vapor tubes because of the presence of the hydroxyl group on those molecules.

1.3 Units—The values stated in SI units are to be regarded as the standard.

1.4 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.

1.5 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.


5.1 The measurement of water vapor in natural gas is important because of the gas quality specifications, the corrosive nature of water vapor on pipeline materials, and the effects of water vapor on utilization equipment.

5.2 This test method provides inexpensive field screening of water vapor. The system design is such that it may be used by nontechnical personnel with a minimum of proper training.

SDO ASTM: ASTM International
Document Number D4888
Publication Date Dec. 15, 2020
Language en - English
Page Count 3
Revision Level 20
Supercedes
Committee D03.06.04
Publish Date Document Id Type View
Dec. 15, 2020 D4888-20 Revision
June 1, 2006 D4888-06 Revision
Nov. 1, 2015 D4888-06R15 Reaffirmation
Nov. 1, 2011 D4888-06R11 Reaffirmation
Nov. 10, 1999 D4888-88R99 Reaffirmation