G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 13/06 (2006.01)
Patent
CA 2321634
The invention relates to a method of measuring properties of paper and an arrangement in a paper measuring apparatus. The measuring probe (4a, 4b) of the measuring apparatus is kept at a distance from the surface of the paper (2) by feeding medium between the measuring probe (4a, 4b) and the paper (2) through the measuring probe (4a, 4b). The pressure (P) of the medium to be fed, the dimensions of the feed hole (6a, 6b) and the measuring probe (4a, 4b) and their distance (ho) from the surface of the paper (2) are arranged in such a way that after the medium is discharged from the feed hole (6a, 6b), the flow rate increases so as to produce underpressure which generates a force between the paper (2) and the measuring probe (4a, 4b), which force (F) tends to move them towards one another. The feeding of the medium generates a force between the measuring probe (4a, 4b) and the paper (2) forcing them away from one another, whereby the measuring probe (4a, 4b) and the paper (2) settle in a state of equilibrium determined by said forces.
L'invention concerne un procédé de mesure des propriétés du papier et un système pour appareil de mesure du papier. On maintient la sonde de mesure (4a, 4b) de l'appareil de mesure à distance de la surface du papier (2) en amenant entre la sonde de mesure (4a, 4b) et le papier (2) un milieu à travers cette sonde de mesure (4a, 4b). On règle la pression (P) du milieu à amener, les dimensions de l'orifice d'amenée (6a, 6b) et de la sonde de mesure (4a, 4b), ainsi que leur distance (ho) par rapport à la surface du papier (2) de manière qu'après l'évacuation du milieu par l'orifice d'amenée (6a, 6b), le débit augmente de façon à produire une sous-pression générant entre le papier (2) et la sonde de mesure (4a, 4b) une force (F) tendant à les déplacer l'un vers l'autre. L'amenée du milieu génère entre la sonde de mesure (4a, 4b) et le papier (2) une force les éloignant l'un de l'autre, suite à quoi la sonde de mesure (4a, 4b) et le papier (2) se fixent dans un état d'équilibre déterminé par ces forces.
Metso Paper Automation Oy
Neles Paper Automation Oy
Sim & Mcburney
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