A head made of metal is provided covering an opening of a filter case, and a filtration member having a tubular shape is provided in an internal space formed by the filter case and the head. A plate made of metal is provided near the opening of the filter case, and an IC tag is provided between the filtration member and the plate. The head is provided with an antenna unit including an antenna section including an antenna configured to communicate with the IC tag. The antenna unit includes a case having a rod shape and at least partially inserted into the head, the antenna section is provided adjacent to a first end corresponding to one end of the case, the case is provided in the head such that the antenna section is exposed when the head is viewed from a side of the filter case, and the plate is provided with an aperture from which the IC tag is exposed.

A data display system and method for new energy digital water purifier is disclosed. The data display system includes a data recording module and a lifetime calculation module. Herein the data recording module is configured to detect and record an initial electric energy generated by the generator when there is a water stream flowing through the new energy digital water purifier after the new energy digital water purifier has replaced a filter element. By calculating the electric energy generated by the generator to reflect the degree of obstruction of the filter element, and by recording generation duration of the generator as the usage duration of the filter element, the user is alerted to replace the filter element in time when the degree of obstruction of the filter element is high or the usage duration is too long.

A filter device including a probe where a filter element probe first end selectively engages with a sensing unit located in a filter head and a filter element probe second end is located in a contaminant portion of a filter canister. The probe fixedly engages through the filter element utilizing a sealing component. The filter element is disposed in the filter canister that engages with the filter head.

A filter cartridge includes a filter medium disposed within an interior volume of a casing. A leak director is positioned on the casing above an RFID tag. The leak director has a trough that extends about a sidewall of the casing. The trough of the leak director has an outlet positioned for directing liquid in the trough to the RFID tag.

A filter cartridge includes a casing that is mountable to a filter manifold. A leak collector is mounted to the casing at a bottom portion of the casing. The leak collector has a trough that extends about a sidewall of the casing. The trough of the leak collector is sized and positioned for receiving liquid flowing down the sidewall of the casing at the bottom portion of the casing.

A filter device for filtering fluids, in particular for filtering hydraulic oil, contains a filter housing, at least one filter cover, and at least one filter element which is arranged replaceably in the filter housing. The filter element has a carrier portion with at least one data store, wherein identity data for in particular identifying the filter element are stored in the data store and can be read wirelessly from the data store by a read and/or write unit. The carrier portion extends at least partially through a passage opening in the filter housing and/or filter cover, wherein the data store arranged on or in the carrier portion.

A water filter system for an appliance includes a filter head assembly, a first appliance control unit positioned proximate the filter head assembly and a water filter having a memory storage unit. The water filter is selectively placed in communication with the first appliance control unit to define a filter use state. The filter use state is further defined by a first potential fluid-flow rate through the water filter and a predetermined lifetime fluid filtration amount. A data transfer mechanism defines a second data-transfer protocol between the memory storage unit and the first appliance control unit when an actual fluid filtration amount of the water filter reaches the predetermined lifetime fluid filtration amount. The second data transfer protocol defines a notification state defined by a second potential fluid flow rate, the second potential fluid flow rate being less than the first potential fluid flow rate.

A filter device having a filter element received in a filter housing, the filter housing has an inlet and an outlet. The filter element separates a crude chamber that communicates with the inlet from a pure chamber that communicates with the outlet. The filter element has an axially and eccentrically projecting plug, which in an inserted state, is plugged into a plug receptacle formed within the filter housing, and wherein at least one signal generator recognizes at least one of a presence and an absence of the plug in the plug receptacle, generating at least one signal.

A water filter includes a filter unit having a body portion adapted to be rotatingly received into a filter head assembly. An engagement protrusion extends from the body portion and is adapted for reception in a complementary receiver in the filter head assembly. An electronic device is disposed on the filter unit having a memory storage unit. A laterally extending key member is disposed on the body portion between the first engagement surface and the second engagement surface. The laterally extending key member is adapted to reposition an interference member from an interference position, whereby the body portion can be fully inserted into the filter head assembly to a non-interference position, whereby the body portion can be fully inserted into the filter head assembly.

Various example embodiments relate to a filtration system. The filtration system comprises a housing having a first housing end and a second housing end. The housing defines a central compartment therein. The housing comprises a key slot disposed on the first housing end and a housing key element protruding from the first housing end toward the second housing end. The filtration system further comprises a filter element positioned within the central compartment of the housing. The filter element has a first filter end and a second filter end. The filter element includes filter media and an endplate disposed on the first filter end. The endplate includes a central endplate opening, a key element configured for engagement with the key slot, and an installation guidance element formed along the central endplate opening. The installation guidance element is configured for engagement with the housing key element.