System for measuring the length of a long magnetizable material

Details System for measuring the length of a long magnetizable material System for measuring the length of a long magnetizable material

1980-09-19

1984-08-21

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Movable random length material measurement

324243, 33125T, G01B 704

Patent

active

044672802

ABSTRACT:
A system for measuring the length of a running material such as steel cable is proposed which includes a magnetic marker, a mark detector having three magnetic sensors, and a signal handling means. The magnetic mark is accurately detected by use of the zero crossing point detection method for an accurate length measurement. An accurate measurement is further assured by various compensation arrangements.

REFERENCES:
patent: 3015062 (1961-12-01), George et al.
patent: 3526886 (1970-09-01), Lubich
patent: 3764896 (1973-10-01), Manders
patent: 4041610 (1977-08-01), Uesugi et al.

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