A Novel Method and an Equipment for Generating the Standard Moisture in Gas Flowing through a Pipe

When inert gas containing water molecules flows into a metal pipe, the water molecules cannot exit instantaneously from the outlet of the pipe but are captured at adsorption sites on the inner surface of the pipe until most of the sites are occupied. A theoretical model and a subsequent experiment i...

Full description

Saved in:
Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2018-10, Vol.18 (10), p.3438
Main Authors: Tsukahara, Yusuke, Hirayama, Osamu, Takeda, Nobuo, Oizumi, Toru, Fukushi, Hideyuki, Sato, Nagisa, Tsuji, Toshihiro, Yamanaka, Kazushi, Akao, Shingo
Format: Article
Language:English
Subjects:
ball SAW sensor
permeation tube
surface acoustic wave
Trace moisture
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:When inert gas containing water molecules flows into a metal pipe, the water molecules cannot exit instantaneously from the outlet of the pipe but are captured at adsorption sites on the inner surface of the pipe until most of the sites are occupied. A theoretical model and a subsequent experiment in this article show that the delay time depends on the amount of moisture level; the higher the moisture-level, the shorter the delay time. Based on the result, we propose a new method and its implementation to the validation of a standard moisture generation to be used in the field measurement such as in factories and pipe lines.
ISSN:1424-8220
1424-8220
DOI:10.3390/s18103438