It’s possible to connect a PT1000 temperature sensor to a PCD7.L60x room controller?

No, it’s only possible to connect an NTC10kOhm temperature sensor to the S or E2 terminal.

If a PT1000 temperature sensor is connected to the S terminal of a  PCD7.L60x room controller, then all the time the temperature value will be used/shown, which is defined as “temperature via SBus” in the “HVC Room” F-Box of the F-Box family ‘RoomController PCD7_L60x SV2_11/13’