Method for operating a traversing sensor apparatus

Details Method for operating a traversing sensor apparatus Method for operating a traversing sensor apparatus

1997-09-12

1999-08-31

Oen, William

Measuring and testing

Sheet, woven fabric or fiber

G01L 504

Patent

active

059439068

ABSTRACT:
Method for operating a traversing sensor apparatus, wherein the properties of a paper web are measured through traversing such that a measuring head is moved during the measurement in the cross-machine direction. The movement of the measuring head in the cross-machine direction is stopped above the paper web and data is collected for a certain period through measurement from an area narrower than the width of the paper web, whereafter the movement of the measuring head in the cross-machine direction is continued. The data collected from an area narrower than the width of the paper web is used to calculate MD and CD values and to determine the effect of harmonic variations.

REFERENCES:
patent: 4939929 (1990-07-01), Ostman
patent: 5022966 (1991-06-01), Hu
patent: 5298122 (1994-03-01), Munch et al.
patent: 5493910 (1996-02-01), Hall et al.
patent: 5714692 (1998-02-01), Rohde

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