FILTER JUG WITH REPLACEABLE CARTRIDGE AND METHOD OF MONITORING AND CONTROLLING THE EFFICIENCY OF A FILTER CARTRIDGE IN A REPLACEABLE CARTRIDGE FILTER DEVICE

摘要

Replaceable cartridge filtering jud comprising means 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, in which auxiliary counting and display means 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 are provided.