Research Article

A New Device to Automate the Monitoring of Critical Patients’ Urine Output

Figure 3

Functioning of the device. Each subfigure shows the forces that come into play in each of the states. The solid black downwards pointing arrows correspond to forces caused by gravity; the solid blue upwards pointing arrows to buoyancy forces; the dashed red downwards pointing arrows to magnetic forces; and the green inclined arrows to forces caused by the pressure of the column of liquid.
587593.fig.003a
(a) Empty
587593.fig.003b
(b) Filling
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(c) Completely full
587593.fig.003d
(d) Starts draining
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(e) Draining
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(f) Closes again