TA Instruments have released the DTS-25, an entry-level instrument to test the thermal
conductivity of solid materials using the ASTM E1530 guarded heat flow method.
Thermal conductivity range is from 0.1 to 20 W/mK, reproducibility is pegged at
"- test specimen is held under a compressive load between two 50mm diameter
polished metal surfaces.
- Upper surface is temperature controlled. The lower surface is part of a
calibrated heat flux transducer, which is attached to a liquid cooled heat
- Contact resistance is kept small by applying a reproducible, pneumatic load
to the test stack.
- Temperature drop through the specimen is determined from temperature
sensors in the metal surfaces on either side of the specimen.
- After reaching thermal equilibrium, the temperature difference across the
specimen is measured along with the output from the heat flux transducer. These
values and the specimen thickness are then used to calculate thermal
MSRP is estimated at $15K. Contact TA Instruments for a quote.