Medical treatment system and methods using a plurality of fluid lines

A system for determining a value dependent upon a heightwise location of a component of interest relative to a pumping chamber of a fluid handling set, the system comprising:

• a pumping cassette including the pumping chamber, and a plurality of valves, at least one of the valves disposed intermediate the pumping chamber and the component of interest;
• a pressure distribution module having a control surface against which the pumping cassette is retained, the pressure distribution module including at least one sensor configured to output sensor data indicative of a pressure of the pumping chamber;
• and
• a controller configured to command the pressure distribution module to establish a path from the component of interest to the pumping chamber, receive the sensor data, and detect a feature profile in the sensor data, the controller configured to predict the value dependent upon the heightwise location based on the feature profile before the sensor data has stabilized.

A system for detecting a heightwise location of a component of interest comprising:

• a pumping cassette including a pumping chamber, and a set of fluid valves, a first fluid valve of the fluid valves being intermediate the pumping chamber and the component of interest;
• a pressure distribution module having a control surface for receipt of the pumping cassette and including at least one sensor configured to output sensor data indicative of a pressure of the pumping chamber;
• and
• a controller configured to command the pressure distribution module to establish a path from the component of interest to the pumping chamber, receive the sensor data, and detect a feature profile in the sensor data before the sensor data indicates the pressure in the pumping chamber is stable, the controller configured to set, based on the feature profile, a heightwise location value for the component of interest from a list consisting of:
• a value dependent upon the heightwise location of the component of interest, and a headheight value of the component of interest.