Method of measuring the change in volume of a diaphragm bellows used in a volume displacer of a constant-pressure gas flowmeter (with a practical guide)

L. Peksa; T. Gronych; M. Vicar; M. Jerab; P. Repa; J. Tesar; D. Prazak; Z. Krajicek; F. Stanek

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Method of measuring the change in volume of a diaphragm bellows used in a volume displacer of a constant-pressure gas flowmeter (with a practical guide)

机译：测量在恒压气体流量计的容积置换器中使用的隔膜波纹管的容积变化的方法（附有实用指南）

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摘要

Construction of constant-pressure gas flowmeters utilizing directly driven bellows and diaphragm bellows as volume displacers were described in recent decades. They have important advantages: accuracy, reliability, easy operation and maintenance. Difficult is to scale sufficiently accurately the changes in volume at compression, to evaluate the uncertainty of this measurement, and to include all the emerging uncertainties into generated throughput uncertainty budget. A compensation method has been proposed for precise measurement of this dependence. This paper presents guides for the implementation of it. The requirements that must be met to achieve a very low uncertainty are described. The method was used for measuring two diaphragm bellows of different sizes as example illustrating achievable values. The attained uncertainty of measurement is analyzed and a procedure is described for determination of the volume of the displaced gas and its uncertainty when using a directly driven diaphragm bellows in a constant-pressure gas flowmeter.

机译：近几十年来，已经描述了利用直接驱动的波纹管和隔膜波纹管作为容积置换器的恒压气体流量计的构造。它们具有重要的优势：准确性，可靠性，易于操作和维护。困难的是要足够准确地按比例缩放压缩时的体积变化，以评估此测量的不确定性，并将所有出现的不确定性纳入生成的吞吐量不确定性预算中。已经提出了一种补偿方法来精确测量这种依赖性。本文提供了实施指南。描述了实现极低不确定性所必须满足的要求。该方法用于测量两个不同尺寸的隔膜风箱，作为示例说明了可实现的值。分析了获得的测量不确定度，并介绍了在恒压气体流量计中使用直接驱动的隔膜波纹管时确定置换气体体积及其不确定度的过程。

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《Measurement》 |2011年第6期|共10页
作者
L. Peksa; T. Gronych; M. Vicar; M. Jerab; P. Repa; J. Tesar; D. Prazak; Z. Krajicek; F. Stanek;
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正文语种 eng
中图分类计量学;
关键词
Diaphragm bellows; Welded bellows; Constant-pressure gas flowmeter;

机译：隔膜波纹管;焊接波纹管;恒压气体流量计;

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1. Method of measuring the change in volume of a diaphragm bellows used in a volume displacer of a constant-pressure gas flowmeter (with a practical guide) [J] . L. Peksa, T. Gronych, M. Vicar, Measurement . 2011,第6期

机译：测量在恒压气体流量计的容积置换器中使用的隔膜波纹管的容积变化的方法（附有实用指南）
2. Measurement of volume change induced by a bulging of a diaphragm inside a differential type capacitance diaphragm gauge [J] . Kenta Arai, Hajime Yoshida, Tokihiko Kobata Measurement . 2014,第Null期

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Method of measuring the change in volume of a diaphragm bellows used in a volume displacer of a constant-pressure gas flowmeter (with a practical guide)

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