An arrangement and method for determining the service interval of a fluid filter includes a filter and a pump driven by an electric motor. A control module calculates pressure drop across the filter by way of voltage, current, and/or PWM provided to the electric motor. The control module monitors the rate of change of the pressure drop across the filter over the life of the filter. The volume flow rate of the fluid may or may not be held constant. If an abrupt or sudden characteristic change in the pressure drop across the filter occurs, or if the pressure drop across the filter exceeds a threshold amount, the arrangement and method provides a notification that either the filter needs to be replaced or serviced, or that it is probable that a mechanical condition has developed, depending upon the characteristics of the change in pressure drop across the filter.

A water purifier includes: a raw water flow path; a purified water flow path connected to the raw water flow path; at least one filter provided in the purified water flow path and to filter raw water flowing along the purified water flow path; a washing water flow path connected to the raw water flow path; a washing water generator configured to electrolyze the raw water to generate washing water; an optical sensor to output a value according to a degree of generation of bubbles included in the washing water; and a controller to control the washing water generator and at least one valve provided in at least one of the raw water flow path, the purified water flow path, and the washing water flow path to perform a washing operation, and identify whether an error has occurred in the washing operation based on an output from the optical sensor.

A fluid filtration system includes a single use filter removably mounted to a cabinet of a workstation. The upstream end of the single use filter is in fluid communication with a pump via a fluid supply conduit that includes a test junction. An integrity test device is supported by the cabinet and is in fluid communication with the upstream end of the single use filter via a test conduit fluidly connected to the single use filter via the test junction of the fluid supply conduit. The integrity test device adapted to be connected to a source of pressurized gas and to selectively direct a flow of pressurized gas through the test conduit and the single use filter to perform a test operation on the single use filter.

A fluid filtration system includes a single use filter removably mounted to a cabinet of a workstation. The upstream end of the single use filter is in fluid communication with a pump via a fluid supply conduit that includes a test junction. An integrity test device is supported by the cabinet and is in fluid communication with the upstream end of the single use filter via a test conduit fluidly connected to the single use filter via the test junction of the fluid supply conduit. The integrity test device adapted to be connected to a source of pressurized gas and to selectively direct a flow of pressurized gas through the test conduit and the single use filter to perform a test operation on the single use filter.

A filter element has a filter body which is closed on at least one end face by an end disc, wherein the end disc is formed from a potting compound, and has a stabilization device which is surrounded at least in some areas by the potting compound. At least one data storage unit is arranged on or in the stabilization device.

A filter element has a filter body which is closed on at least one end face by an end disc, wherein the end disc is formed from a potting compound, and has a stabilization device which is surrounded at least in some areas by the potting compound. At least one data storage unit is arranged on or in the stabilization device.

A system for treating water for use in aquatics or recreational facilities is disclosed. The system includes a media filter vessel, a pressure sensor, and a monochromatic light source. A method of treating water for use in aquatics or recreational facilities is also disclosed. The method includes fluidly connecting a media filter vessel to a source of water for use in aquatics or recreational facilities, illuminating a media inside the media filter vessel, observing a monochromatic light source display a first indicator and observing a monochromatic light source display a second indicator. A method of retrofitting a media filter vessel is also disclosed. The method includes installing a pressure sensor on the media filter vessel, installing a monochromatic light source and operably connecting the monochromatic light source to a manual control and to the pressure sensor.

A system for treating water for use in aquatics or recreational facilities is disclosed. The system includes a media filter vessel, a pressure sensor, and a monochromatic light source. A method of treating water for use in aquatics or recreational facilities is also disclosed. The method includes fluidly connecting a media filter vessel to a source of water for use in aquatics or recreational facilities, illuminating a media inside the media filter vessel, observing a monochromatic light source display a first indicator and observing a monochromatic light source display a second indicator. A method of retrofitting a media filter vessel is also disclosed. The method includes installing a pressure sensor on the media filter vessel, installing a monochromatic light source and operably connecting the monochromatic light source to a manual control and to the pressure sensor.

An impending bypass switch includes a housing having a fluid inlet for admitting fluid into an interior of the housing. A piston is displaceable in the interior of the housing in response to a pressure variation of the fluid in the interior. A magnetic sensor is configured to receive a current and is fixedly mounted to the housing. A magnet is mounted to the piston to be displaced with the piston. Displacement of the magnet relative to the magnetic sensor causes a change in the current through the magnetic sensor. The change in the current is indicative of an impending bypass of a component.

A system for signaling and/or displaying a depletion condition of a filter cartridge in a water treatment device by means of filtration with replaceable cartridges. The filter cartridge including an identification code which identifies the cartridge and which can be read by means of an optical reader of a portable electronic device. The portable electronic device includes a programmable control interface which can be displayed on a screen of the portable electronic device, by means of which it is possible to acquire identification data of the cartridge, to modify one or more predefined or previously imposed parameters in relation to the conditions of use of the cartridge, and to display the effective duration of the cartridge.