Valmet Dirt Count Analyzer - Valmet DCD
The unique Valmet Dirt Count Analyzer (Valmet DCD) is used for classification of dirt count and brightness from pulp sheets at the baling line.
Dirt is analyzed by using image analysis program, and then classified according to the size and shape. Analysis results are reported both graphically and numerically. When a spectrophotometer is installed, Valmet DCD can also analyze color. Results are used for end-product quality verification.
- Fast and accurate analysis of dirt count and brightness (optional) from pulp sheets
- Dry and wet sheet analysis
- Size, shape and contrast of each individual dirt
- Classification of dirts into user-selectable classes
- Dirt count expressed as mm2/m2, mm2/kg, n/10g, etc
- Valmet DCD takes samples continuously or according to an internal timer. When the testing sequence is finished, the sample from the following bale row is taken.
- A sheet is taken from one bale of the row and moved to the sample tongs.
- Valmet DCD scans the whole sheet in segment pictures by moving sample sheet and camera across it.
- The brightness test is repeated from different points of the sheet and the average value is calculated.
- Dirt is analyzed from camera images by using image analysis.
- The dirt count is classified according to the size and shape.
- Valmet DCD is ready for the next sheet.
- Conforms standards (ISO, Tappi)
- Large sample amount to analyze
- Operator independent results 24/7
- The measurement results are stored in the databases of the testing station and sent to the mill data net. Database can store results at least from one year.
CUSTOMER SUCCESS STORIES
Guaranteed pulp quality with Valmet Dirt Count Analyzer
Metsä Fibre personnel have actively collaborated with Valmet Dirt Count Analyzer (Valmet DCD) design team and the latest result is a third generation device soon to be delivered to Metsä Fibre mills in Joutseno and Rauma.