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              時間:2017-02-27      來源:蘇州迪森特      關鍵詞:蘇州迪森特      瀏覽量:992



              In paper production the prepared paper pulpflows onto a conveyor belt of fine wire mesh at the so called "wetend". There most of the water is removed by means of a vacuum. The paperweb is generated and is transported to the second station, the wet pressrollers, which determine the paper web speed by means of a second drive unit.In order to avoid tears in the paper web a laser position measuring system isused here which measures the position of the paper web between the twostations. The analog output signal of the sensor is fed into a closed-loop controlcircuit which influences the motor speed at station 1 and thereby ensures thata specified set point distance value is maintained.