Tensiometer and method for determining a spatially averaged water potential in a test piece

Abstract

A tensiometer comprising a measuring cell of a selectable length, referred to as a potential cell, which comprises a closable measuring chamber sheathed by a tubular semipermeable membrane, fittable into a test piece; a reference system comprising a reference chamber and a measuring cell of a selectable length, referred to as a reference cell and comprising a closable measuring chamber sheathed by a tubular semipermeable membrane, the reference cell being integrated into the reference chamber of the reference system, and wherein the reference chamber contains an osmotic reference solution or can be filled with such a solution, wherein the potential cell and the reference cell are filled or can be filled with an osmotic solution; and a pressure-measuring device, that measures at least a pressure difference (Δp) between the cell measuring chambers. The invention also relates to a method.

Dependencies are inferred from the claim text.