Method and device for measurement of the nip force and/or nip pr

Details Method and device for measurement of the nip force and/or nip pr Method and device for measurement of the nip force and/or nip pr

1992-10-14

1995-01-24

Noland, Tom

Measuring and testing

Dynamometers

Responsive to force

7386268, G01L 500

Patent

active

053833716

ABSTRACT:
The invention concerns a method and a device for measurement of the nip force and/or nip pressure in a nip (N) formed by a revolving roll or a band used in the manufacture of paper. In the method and in the device, a series of measurement detectors (20.sub.1 . . . 20.sub.n) is used, whose detectors (20) are placed across a considerable width of the paper web (W) in the transverse direction of the revolving roll (10) or the band. The measurement signals received from the different detectors (20) are passed to a switching unit (23), whose connectors (24.sub.l. . .24.sub.n) are controlled so that, through the switching unit (23), the signal of each measurement detector (20.sub.l. . .20.sub.n) is alternatingly connected to a telemeter transmitter (26) placed in connection with the revolving roll (10). By means of the telemeter transmitter (26), the series of measurement signals (V.sub.in l. . . V.sub.in n) are transmitted wirelessly to a stationary telemeter receiver (27) placed outside the revolving roll (10).

REFERENCES:
patent: 3631385 (1971-12-01), Silverman
patent: 3962911 (1976-06-01), Grenlund
patent: 4016756 (1977-04-01), Kunkle
patent: 4373533 (1983-02-01), Iinuma
patent: 4693196 (1987-09-01), Hager
patent: 4744253 (1988-05-01), Hermkens
patent: 4791863 (1988-12-01), Vahatalo
patent: 5048353 (1991-09-01), Justus
patent: 5060651 (1991-10-01), Kondo et al.
patent: 5159402 (1992-10-01), Ortiz, Jr.

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