Methods of utilizing a pressure sensor to detect anomalous apheresis procedure events

A fluid processing system comprising:

• a fluid processing device and a disposable fluid flow circuit configured for selective arrangement on the fluid processing device for the fluid processing device to perform a procedure, wherein the fluid processing device comprises:
• one or more components, the one or more components including a pump system, a valve system, and a centrifuge;
• a container pressure sensor system including one or more container pressure sensors;
• and
• a controller operably connected to the container pressure sensor system, wherein the disposable fluid flow circuit comprises:
• one or more fluid containers;
• and
• one or more tubes fluidically connected to the one or more fluid containers to allow fluid flow into and out of the one or more containers,
• wherein the disposable fluid flow circuit is arranged on the fluid processing device such that a container pressure sensor of the container pressure system is arranged at a tube of the one or more tubes directly below at least one fluid container of the one or more fluid containers to which to the tube is fluidically connected,
• wherein the container pressure sensor system is configured to detect and transmit signals indicative of a pressure within the tube, wherein the pressure corresponds to a pressure exerted by a volume of fluid in the corresponding fluid container, and
• wherein the controller is configured to:
• receive the signals transmitted from the container pressure sensor system,
• determine a flow condition using the received signals;
• and
• control the one or more components based on the determined flow condition.

A method of determining a flow condition in a fluid processing procedure, wherein the fluid processing procedure is performed by a fluid processing device comprising one or more components configured to direct fluid flow, a container pressure sensor system comprising one or more pressure sensors, and a controller operably connected to the container pressure sensor system and at least one of the one or more components, the method comprising:

• receiving a signal from a container pressure sensor of the container pressure sensor system indicative of a pressure in a tube fluidically connected to and directly below a fluid container;
• determining a flow condition using the received signal;
• and
• controlling the at least one component of the one or more components based on the determined flow condition.