@scooby The PanelDue only shows temperatures related to heaters, ie nozzles, beds and chambers. If your bed temperature sensor isn't used by a heater (ie usually the bed heater), it will show on the 'Extras' tab in DWC only. You can define a 'dummy' heater, that uses an unused output, and map the temperature sensor to that, and define it as a bed or chamber. See https://docs.duet3d.com/User_manual/Connecting_hardware/Heaters_bed#configuring-a-bed-heater
Ian