Patent ID: 8617397

Claim:
A reverse osmosis system for filtering a liquid to obtain a permeate, comprising: a pressure tube; a plurality of membrane filter devices enclosed within the pressure tube, each of the membrane filter devices comprising a permeate tube associated with the membrane filter device and each of the membrane filter devices having its own associated radio frequency identification (RFID) tag associated with the membrane filter device configured to store data and wirelessly transmit the data; a conductivity measuring device disposed within each permeate tube and configured to measure permeate conductivity data for the associated membrane filter device and transfer the conductivity data to said RFID tag associated with the membrane filter device; a permeate flow measuring device disposed within each permeate tube and configured to measure permeate flow data for the associated membrane filter device and transfer the permeate flow data to the RFID tag associated with the membrane filter device; and a data retrieval device configured to receive permeate conductivity data and permeate flow data transmitted by the RFID tags and to calculate values indicative of the performance of the membrane filter devices; wherein the RFID tags are further configured to power on and off each of the conductivity measuring devices and permeate flow measuring devices in the pressure tube.