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A Self-Adjusting, Null-Point Tensiometer¹

ABSTRACT

This paper describes a new tensiometer which does not allow water passage through the porous cup and which automatically adjusts the measuring manometer to the correct tension value. It can be used to measure dynamic as well as static tensions. Performance data, which are given and discussed, indicate the accuracy of the tensiometer is within 2%.

¹ Journal Paper 1737, Purdue University Agr. Exp. Sta., Lafayette, Ind.; contribution from the department of agronomy. This research was supported by a grant from the Division of Agricultural Relations, Tennessee Valley Authority. Presented before Div. I, Soil Science Society of America, Nov. 30, 1961, at St. Louis, Mo.

² Graduate Assistant and Professor of Agronomy, respectively.

Received for publication May 6, 1961. Accepted for publication May 10, 1961.