Web tension measuring method and device

Details Web tension measuring method and device Web tension measuring method and device

1985-07-16

1987-04-07

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

73DIG1, G01L 504, G01H 1300

Patent

active

046550933

ABSTRACT:
Web tension measurement in that the web (5) is caused to oscillate transversely with the resonance frequency for the portion of the web (5) defined by a support (2,2a). The oscillations are measured by detectors (6,7) for determining the web tension. The measuring is carried out free of contact in that a thin air layer is maintained between the support (2,2a) and web (5).

REFERENCES:
patent: 4109520 (1978-08-01), Eriksson
patent: 4235102 (1980-11-01), Karlsson et al.

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