This information is part of the Modelica Standard Library maintained by the Modelica Association.
The RelaticeSensor is a partial model for converting values that can be calculated from two pin connectors into a real valued signal. The special calculation has to be described in the model which inherits the RelativeSensor. It is often used in sensor devices. To be a true sensor the modeller has to take care that the sensor model does not influence the electrical behavior to be measured.