The EXTASE thermal probe - state of affairs

Kurzfassung

EXSTASE is a spin-off project from the MUPUS (Rosetta Lander) thermal probe, both funded by DLR. The thermal probe will be tested in various environments and fields, e.g. in snow research, agriculture, permafrost, monitoring waste deposits and the heat released by decomposition, ground truth for remote sensing etc. The probe is a glass-fibre tube of 1 cm diamter, about 32 cm long and carries of 16 sensors for measuring temperature profiles. Each of the sensors can also be heated for in situ measurements of the thermal conductivity of the penetrated layers. All necessary connection and the sensors itself are printed on a capton foil which is rolled and glued to the inner wall of the tube. This design results in the significant advantage that the measurements can be done in-situ - noch excavation of material is required to do the measurements. Recently, the development of the field electronic was finished and now the heating option - which is necessary to do the thermal conductivity measurements - is available and first test measurements have been done. Preliminary results of these tests and the new design of the probe are shown.