Magnetic taggant system

Details Magnetic taggant system Magnetic taggant system

2006-12-12

2006-12-12

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Fluid material examination

C073S061420, C073S053070

Reexamination Certificate

active

07148678

ABSTRACT:
An apparatus and a method for monitoring a ratio of at least two components being mixed uses sensors detecting ferrous taggant particles in the component(s) and the mixture. The sensors include an annular drive coil positioned between inner and outer annular sense coils all surrounding a passage for material being sensed. The ratio is determined by comparing a signal generated by one sensor through which a taggant particle containing component is flowing with a signal generated by another sensor through which the mixture is flowing delayed by the time required for the component to flow from the one sensor to the another sensor.

REFERENCES:
patent: 4686469 (1987-08-01), Lewis
patent: 4816758 (1989-03-01), Theissen et al.
patent: 5315243 (1994-05-01), Kempster et al.
patent: 5831151 (1998-11-01), Ondrus et al.
patent: 6560544 (2003-05-01), Ondrus

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