Identificatioin of filter media within a filtration system
Assignee3M Innovative Properties Company
InventorsAndrew P. Bonifas, Nicholas G. Amell, Ronald D. Jesme, Jeffrey M. Maki, Brock A. Hable, Jaewon Kim
Life of this patent
Estimating the term…
Abstract
In general, techniques are described for filter media monitoring within a filtration system. The filter media monitoring techniques described herein include, for example, direct contact with the filter media, e.g., a sensor may be located inside a boundary defined by a surface of the filter media, or indirect contact with the filter media, e.g., a sensor may be located outside the boundary defined by the surface of the filter media such that the sensor does not make direct physical contact with the filter media being monitored.
Claims20
A filter cartridge comprising:
- a filter housing comprising an inlet through which untreated fluid enters and an outlet from which treated fluid exits;
- a filter media contained within the filter housing configured to treat the fluid passing through the filter housing;
- a region of the filter housing configured to connect to a fluid manifold connecting the inlet and the outlet;
- and
- an electromagnetic identification device attached to or within the filter housing and configured to modify an electromagnetic field generated by a filter media sensor system,
- wherein the identification device comprises a magnetic material.
A filter cartridge comprising:
- a filter housing comprising an inlet through which untreated fluid enters and an outlet from which treated fluid exits;
- a filter media contained within the filter housing configured to treat the fluid passing through the filter housing;
- a region of the filter housing configured to connect to a fluid manifold connecting the inlet and the outlet;
- and
- an electromagnetic identification device attached to or within the filter housing and configured to modify an electromagnetic field generated by a filter media sensor system,
- wherein the identification device comprises a dielectric material.
Dependencies are inferred from the claim text.