INDICATING WATER DRAINAGE FROM WET STOCK ON FORMING SCREEN

摘要

1279152 Monitoring water drainage in paper making INDUSTRIAL NUCLEONICS CORP 16 June 1969 [20 June 1968] 30454/69 Heading G1A [Also in Division D2] The weight per unit area of wet stock travelling on a forming screen in a paper making machine is determined at at least two locations spaced in the direction of travel in order that the rate of water drainage through the screen may be assessed. Signals developed in the two locations may be combined to provide an indication of the drainage. Separate radio active sources may be disposed beneath the screen or a radio active wire may be threaded along the length of the screen and the detection may be effected by a single detector moved in synchronism with the stock or by a number of detectors spaced along the machine. The plurality of detection may be connected to individual meters or their outputs may be sampled sequentially and applied to a recorder.