Drainability measurement

A method of measuring a suspension, the method comprising

• receiving a sample of a predetermined volume in a measurement chamber;
• allowing the suspension to flow out of the measuring chamber through wire;
• measuring the flow out of the measurement chamber at least at two points in time;
• and
• establishing a parameter descriptive of the drainability of the suspension by a predetermined modelling function from the flows measured at the different points in time,
• wherein the predetermined modelling function is determined by:
• receiving known liquid flows of water or known suspension with a funnel, each of which fills the funnel in such a manner that the liquid flows from a side branch;
• measuring, for each known liquid flow received with the funnel, each flow of a lower branch and/or each flow of the side branch;
• and
• establishing a modelling function based on the measurements between the flows of the lower branch and/or the flows of the side branch and the known liquid flows received with the funnel.

A measurement device for modelling the drainability measurement of a suspension, wherein the measurement device comprises:

• a funnel, a meter and a memory,
• the funnel comprising a side branch and a lower branch being configured to receive known liquid flows of water or known suspension, each of which is larger than the flow of the lower branch of the funnel;
• the meter is configured to measure, for each known liquid flow received with the funnel, each liquid flow discharged from the funnel in at least one of the following:
• lower branch, side branch;
• and
• the memory is configured to store the modelling function, the modelling function being based on a dependency between the known liquid flows received with the funnel and the liquid flows discharged from the funnel in at least one of the following:
• lower branch, side branch.

A measurement device for measuring a suspension, the measurement device comprising a measurement chamber of a predetermined volume and a wire, the measurement chamber being configured to receive a suspension sample and allow the suspension sample to flow out of the measurement chamber through the wire, wherein the measurement device comprises

• a sensor for measuring the flow out of the measurement chamber at least at two different points in time;
• a memory, in which a predetermined modelling function is stored;
• and
• a processor configured to establish a parameter descriptive of the drainability of the suspension based on the predetermined function stored in the memory from the flows measured at the different points in time;
• wherein the predetermined modelling function is determined by a measurement device for modelling the drainability measurement of a suspension, the measurement device comprising a funnel, a meter and a memory,
• the funnel comprising a side branch and a lower branch being configured to receive known liquid flows of water or known suspension, each of which is larger than the flow of the lower branch of the funnel;
• the meter is configured to measure, for each known liquid flow received with the funnel, each liquid flow discharged from the funnel in at least one of the following:
• lower branch, side branch;
• and
• the memory is configured to store the modelling function, the modelling function being based on a dependency between the known liquid flows received with the funnel and the liquid flows discharged from the funnel in at least one of the following:
• lower branch, side branch.