Method and a device for measuring concentrations

Details Method and a device for measuring concentrations Method and a device for measuring concentrations

2005-08-16

2005-08-16

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

C162S263000, C073S061410, C073S064560

Reexamination Certificate

active

06929715

ABSTRACT:
A method and a device for measuring concentrations especially in a pulp suspension, from which a sample has been taken. The sample is collected in a measuring vessel, in which a piston is guided upwards and downwards in order to press the sample from each direction through a measuring sensor collected at the side of the measuring vessel via communicating tubes connected in an upper and a lower position to the measurement vessel, whereby the sample is stirred totally to eliminate flocculation in the same. Measurement of the concentration of the sample is made either during the upwards and downwards movement of the piston in the measuring vessel and first occurs when the speed of the sample through the measuring sensor is constant and the sample has been homogenized after at least some movement upwards and downwards of the piston.

REFERENCES:
patent: 3718030 (1973-02-01), Kesler
patent: 3838594 (1974-10-01), Kesler
patent: 3869922 (1975-03-01), Fajans et al.
patent: 4409853 (1983-10-01), Chase et al.
patent: 4635470 (1987-01-01), Skallen et al.
patent: 4840047 (1989-06-01), Richter et al.
patent: 4881286 (1989-11-01), Richter et al.
patent: 5319987 (1994-06-01), Vassel
patent: 5536942 (1996-07-01), Barringer et al.
patent: 5736654 (1998-04-01), Dubois

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