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Standard Test Method for Water Vapor in Natural Gas Using Length-of-Stain Detector Tubes
Automaticky preložený názov:
Štandardná testovacia metóda pre vodnú paru so zemným plynom Použitie Dĺžka-of-Stain detekčnými trubičkami
NORMA vydaná dňa 1.11.2015
Označenie normy: ASTM D4888-06(2015)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.11.2015
Kód tovaru: NS-622634
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
gaseous fuels, natural gas ,, ICS Number Code 75.060 (Natural gas)
Significance and Use |
3.1 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. 3.2 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. |
1. Scope |
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 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. |
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