Fig. 7

Sensors of temperature and RH. a The sensors (grey discs) are separated with PVC and connected with cables to allow remote access. b They are protected by a polyolefin shrink-fit tube. This setup was used to measure T and RH until a depth of 6.7 cm in the wall. c The sensor measuring in the air is protected from the direct sun by a white screen. d The sensor applied at the surface has a thermal contact through a metallic washer protected by PTFE