Equipment for detecting the presence of a tube and/or the presence of blood within it.

摘要

Equipment provided with an optical/electronic system comprising an LED diode (11) and a photosensitive sensor (12) capable of receiving the light radiation emitted by the LED (11) and of providing a corresponding electrical signal, and a circuit (15) for processing this electrical signal. When in use a tube (5) through which blood flows is placed between LED diode (11) and sensor (12). The equipment is provided with a test circuit capable of being connected periodically to the processing circuit replacing the LED (11) and the sensor (12) in order to simulate the behaviour of the latter and to provide a continuous indication of the fact that the tube is present and that blood is present within it, and to check that the parts of the equipment itself are operating correctly. <IMAGE>