An apparatus for controlling a fluid flow rate in a fluid transport line of a medical device, including at least a first pump, at least a chamber for collecting the fluid, at least a sensor for providing a first value correlated to the amount of fluid in the chamber, and a control device configured for receiving a second value representative of the fluid flow rate through the first pump and for correlating the second value with the first value to obtain an accuracy check of the second value. A method for controlling a fluid flow rate in a fluid transport line of a medical device including pumping a fluid, collecting the fluid in a chamber, sensing a first value correlated to the amount of fluid in the chamber, and detecting and sending a second value representative of the fluid flow rate through the first pump to a control device, sending the first value to the control device, and correlating the second value with the first value to obtain an accuracy check.
