Best Practices

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Best Practices

机译：最佳实践

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For All Measurement Techniques - Therngeneral methods required to produce good accuracy begin with proper sampling. Proper sampling begins right at the sample tap. The sample should be drawn upwards from a region sufficiently away from the inner walls and five diameters downstream of any components, elbows and valves, which might modify the flow profile within the pipeline. This sample must be drawn off through heat traced tubing from the point of extraction through to the analyzer. This is a critical issue since all surfaces contacting the sample gas must be maintained at a temperature higher than any dew point or the accuracy will be compromised. Fast or speed loops should be used for maximum speed of response. Sample filtration must remove all particulates and liquid aerosols. This can sometimes be done as part of the sample extraction probe. However, any required pressure reduction should be taken immediately before delivery to the measurement section of the analyzer.

机译：对于所有测量技术-要获得良好的准确性，通常需要采用适当的采样方法。正确的采样从采样点开始。样品应从足够远离内壁的区域向上抽出，并从任何组件，弯头和阀门的下游五个直径处抽出，这可能会改变管道内的流量分布。从萃取点到分析仪，必须通过伴热管将样品取出。这是一个关键问题，因为必须将所有与样气接触的表面保持在高于任何露点的温度下，否则准确性会受到影响。应使用快速或速度环来获得最大响应速度。样品过滤必须去除所有微粒和液体气溶胶。有时这可以作为样品提取探针的一部分来完成。但是，任何必需的压力降低都应在交付到分析仪的测量部分之前立即进行。

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《Pipeline & gas journal》 |2010年第7期|P.53|共1页
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
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7. ACC/AHA/ESC guidelines for the management of patients with atrial fibrillation31This document was approved by the American College of Cardiology Board of Trustees in August 2001, the American Heart Association Science Advisory and Coordinating Committee in August 2001, and the European Society of Cardiology Board and Committee for Practice Guidelines and Policy Conferences in August 2001.32When citing this document, the American College of Cardiology, the American Heart Association, and the European Society of Cardiology would appreciate the following citation format: Fuster V, Rydén LE, Asinger RW, Cannom DS, Crijns HJ, Frye RL, Halperin JL, Kay GN, Klein WW, Lévy S, McNamara RL, Prystowsky EN, Wann LS, Wyse DG. ACC/AHA/ESC guidelines for the management of patients with atrial fibrillation: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines and the European Society of Cardiology Committee for Practice Guidelines and Policy Conferences (Committee to Develop Guidelines for the Management of Patients With Atrial Fibrillation). J Am Coll Cardiol 2001;38:XX-XX.33This document is available on the World Wide Web sites of the American College of Cardiology (www.acc.org), the American Heart Association (www.americanheart.org), the European Society of Cardiology (www.escardio.org), and the North American Society of Pacing and Electrophysiology (www.naspe.org). Single reprints of this document (the complete Guidelines) to be published in the mid-October issue of the European Heart Journal are available by calling +44.207.424.4200 or +44.207.424.4389, faxing +44.207.424.4433, or writing Harcourt Publishers Ltd, European Heart Journal, ESC Guidelines – Reprints, 32 Jamestown Road, London, NW1 7BY, United Kingdom. Single reprints of the shorter version (Executive Summary and Summary of Recommendations) published in the October issue of the Journal of the American College of Cardiology and the October issue of Circulation, are available for $5.00 each by calling 800-253-4636 (US only) or by writing the Resource Center, American College of Cardiology, 9111 Old Georgetown Road, Bethesda, Maryland 20814. To purchase bulk reprints specify version and reprint number (Executive Summary 71-0208; full text 71-0209) up to 999 copies, call 800-611-6083 (US only) or fax 413-665-2671; 1000 or more copies, call 214-706-1466, fax 214-691-6342; or E-mail: pubauth@heart.org. A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines and the European Society of Cardiology Committee for Practice Guidelines and Policy Conferences (Committee to Develop Guidelines for the Management of Patients With Atrial Fibrillation) Developed in Collaboration With the North American Society of Pacing and Electrophysiology [O] . Fuster Valentin, Rydén Lars E., Asinger Richard W., 2001

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