Hemodialysis system including a disposable cassette

A dialysis system comprising:

• an on-line dialysate generator;
• a dialysate pump actuator configured to pump dialysate generated from the on-line dialysate generator to a dialyzer;
• a conductivity sensor located adjacent to a temperature sensor upstream of the dialyzer;
• and
• a disposable cassette configured to carry dialysate pumped by the dialysate pump actuator, the disposable cassette including a combined conductivity and temperature sensor fluid chamber separate from the conductivity sensor and the temperature sensor and located so as to operate with the conductivity sensor and the temperature sensor, respectively, when mounted for operation.

A dialysis system comprising:

• a batch dialysate source;
• a sorbent cartridge;
• a dialysate pump actuator configured to pump dialysate from the batch dialysate source to a dialyzer;
• a conductivity sensor located adjacent to a temperature sensor upstream of the dialyzer;
• and
• a disposable cassette configured to carry dialysate pumped by the dialysate pump actuator, the disposable cassette including a combined conductivity and temperature sensor fluid chamber separate from the conductivity sensor and the temperature sensor and located so as to operate with the conductivity sensor and the temperature sensor, respectively, when the disposable cassette is mounted for operation.