Physikalisch-Technische Bundesanstalt

Determining the thermal diffusivity and thermal conductivity over an area of 10 mm² could be very attractive for various applications in material analysis, such as in the development of new materials or in building physics. So far it has been impossible to reliably and precisely determine these thermal transport properties on such small areas. The "Hotpoint-Sensor" developed at PTB can measure thermal conductivity with pinpoint accuracy as it can be flexibly adapted to each measurement requirement. A measurement takes only a  few minutes and – with the newly developed software – can be precisely and quickly evaluated. Thanks to their simple design, "Hotpoint-Sensors" can be combined, so that the process can be extended to a complete measurement matrix of several measuring sensors.