METHOD AND MEASUREMENT DEVICE FOR MEASURING SUSPENSION

摘要

The invention relates to a method and a measurement device for measuring a suspension which contains wood fibres, the method comprising directing optic al radiation at pulp and measuring optical radiation emitted by the pulp. The solution comprises measuring at least one of the following two properties: kappa number and brightness. The solution comprises changing the pulp consistency in a desired range of consistency extending from a desired initi al consistency to a desired final consistency. The pulp consistency and the strength of a desired wavelength from the optical radiation are measured in the desired consistency range. Measurement points are modelled with a functi on of the desired type by fitting the parameters of the function according to t he measurement points. Finally at least one of the following two properties of the pulp is determined by means of the modelling function: kappa number and brightness.