FIELD: paper production; cellulose production.
SUBSTANCE: apparatus for controlling the conditions of at least one band circulating in a paper making machine along a circulating direction, comprises at least one first detecting device configured to detect at least one first parameter indicative of humidity of the band, and positioned in a first position between a pressing station and a conditioning station of the paper making machine. At least one second detecting device configured to detect at least one second parameter indicative of humidity of the band and positioned in a second position downstream of the conditioning station of the paper making machine. At least one third detecting device configured to detect at least one third parameter indicative of the humidity of the band and of the paper sheet, and positioned in a third position upstream of the pressing station, and a processing unit configured to calculate at least one datum indicative of the condition of the band on the basis of the first parameter indicative of humidity, the second parameter indicative of humidity, and the third parameter indicative of the humidity of the band and the paper sheet.
EFFECT: present invention concerns an apparatus and a method for controlling the conditions of at least one band circulating in a paper making machine and paper making machine comprising said apparatus.
13 cl, 4 dwg
