Quanta Dialysis Technologies Limited

Eric William Westenbrink

An improved valve leak detection system. The improved valve leak detection system comprises a membrane pump defining a flow path arranged to be opened and closed by at least one valve, a measuring device, a comparator, and a signal generator. The measuring device is configured to determine a conductivity value between two points on the flow path of the membrane pump, one point arranged upstream of the at least one valve and the other point arranged downstream of the at least one valve. The measuring device measures the conductivity value when the at least one valve is closed. The comparator is configured to continuously monitor the conductivity value. The signal generator is arranged to provide an output signal when the conductivity value is indicative of a valve leak condition for a set number of measurements within a set period of time.

Valve leak detection system

A method of testing the rotor engagement of a peristaltic pump rotor. The method comprising steps of providing a pump system comprising a peristaltic pump rotor; a tube; a valve; a pressure sensor; a comparator; and a processor. The pressure sensor is configured to monitor the pressure in a fluid in the tube downstream of the peristaltic pump rotor and upstream of the valve. The comparator is configured to continuously monitor the pressure sensor and compare the measured fluid pressure data with a predetermined parameter. The processor is configured to receive a signal from the comparator and generate an alert signal when the measured pressure data falls outside the predetermined parameters.

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Warwickshire, United Kingdom

Eric William Westenbrink