Filtration pot with replaceable cartridge and method for monitoring and controlling the capacity of a filter cartridge in a replaceable cartridge filtration device

摘要

A replaceable cartridge filtering jug includes a device for counting and displaying the filtering cycles performed by the cartridge to indicate that the cartridge is exhausted at the end of a period corresponding to its efficient useful life. An auxiliary counting and display device is also included which is capable of counting the filtering cycles performed in a subsidiary period of the period to indicate an item of data representing the temporary efficiency of the cartridge in the subsidiary period.