STRIPPER FOR BUBBLE-FREE TENSIOMETRY

被引：9

作者：

MILLER, EE ^{[1
]}

SALEHZADEH, A ^{[1
]}

机构：

[1] UNIV MICHIGAN,ANN ARBOR,MI 48109

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1993年 / 57卷 / 06期

关键词：

Soil water pressure measurement - Strippers - Tensiometers - Water pressure;

D O I：

10.2136/sssaj1993.03615995005700060012x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Unwanted formation of air bubbles in the liquid water inside soil water tensiometers has always been a major nuisance afflicting this simple, fast, and accurate device. The stripper, a plastic wall (usually just a tubing wall) between the tensiometer water and a wet vacuum (containing some droplets of liquid water), strips any dissolved air out of this water. Bubbles cannot grow, they will shrink and disappear, unless the water pressure inside the tensiometer is less than the vapor pressure of water (at the ambient temperature). Choices of desirable plastic materials and other considerations are based on 7 yr of development and employment of this method.

引用

页码：1470 / 1473

页数：4