Method of measuring density properties of a particle distribution
AssigneeDekati Oy
InventorsJorma Keskinen, Mikko Moisio, Marko Marjamäki, Annele Virtanen, Jyrki Ristimäki
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Abstract
A method and a device for measuring density properies of a particle distribution, in which method a first parameter relating to the particle distribution is measured at a first measuring point (302), at least part of the flow that passed through the first measuring point is guided to the second measuring point (304), a second parameter relating to the particle distribution is measured at a second measuring point (305), and said first and second parameters relating to the particle distribution are used to determine at least one density property of the particle distribution of the original flow (306).
Claims19
A method for measuring density properties of a particle distribution, in which method
- a particle flow to be analyzed is led to a first measuring point,
- particles are detected at the first measuring point with the aid of an electrical field,
- a first parameter proportional to the detected particles and relating to the particle distribution is produced,
- at least part of the flow that has passed the first measuring point is led to a second measuring point,
- a second parameter relating to the aerodynamic size of the particles is measured at the second measuring point, and
- said first and second parameters are used to determine at least one density property of the particle distribution of the original flow.
A device for measuring density properties of a particle distribution, comprising
- means for generating an electrical field at a first measuring point,
- means for detecting particles at the first measuring point by utilizing said electrical field,
- means for producing a parameter proportional to the detected particles and relating to the mobility of the particles,
- means for measuring a second parameter relating to the aerodynamic size of the particles at the second measuring point, and
- means for computing at least one density property of the original particle distribution by means of said first parameter and a parameter relating to the aerodynamic size.
Dependencies are inferred from the claim text.