.ThermofluidStream.Sensors.DifferenceTwoPhaseSensorSensorSelect.MediumB .ThermofluidStream.Sensors.DifferenceTwoPhaseSensorSensorSelect.MediumBMedium Model for the negative input of the sensor. Make sure it is the same for the stream the sensors inputs are connected.
package MediumB = Media.myMedia.Interfaces.PartialTwoPhaseMedium;