In the Sensor module, you can choose one of the "Physical" sensors that have been simulated in the "Physical" tab using the Equivalent Circuit Analysis.
Those sensors are defined by their very own netlist of capacitances and resistances, as described in the Equivalent Circuit Analysis article.
Those netlists are automatically loaded in the Sensor module, once an Equivalent Circuit Analysis is previously completed.If not, then the Sensor module will be empty and you cannot proceed with an analysis.
Currently you can only view the netlist as it was previously derived from the Equivalent Circuit Analysis of the Physical model. No edit/load options are available at the moment.