Device for the determination of the amount of substance or...

Details Device for the determination of the amount of substance or... Device for the determination of the amount of substance or...

G - Physics

01

N

73/90

G01N 19/00 (2006.01) G01N 33/36 (2006.01)

Patent

CA 1208933

- 9 - ABSTRACT Device for the determination of the amount of substance or the density of fibre structures, which utilises the elastic proper- ties of the fibre material (5). By means of a sphere (8) which is positioned in a conical opening (9) in the duct (6) which holds the fibres and which presses on the fibres with a part of its surface, a nozzle (12) is throttled, so that the pressure on the nozzle (12) represents a measure for the force on the sphere (8). This pressure is in a definite relationship to the fibre pressure on the sphere (8) and can be measured with a pressure measuring device (17) and transformed into an electrical signal by means of a normal commercially available converter. A small groove (19) in the wall of the duct behind the sphere (8) avoids the attachment of fibres between the sphere (8) and the opening (9). Fig. 5

419640

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