Abstract
The above pulse method serves to obtain a simple design solution without the use of complicated systems. By using two specimens a good thermal contact with a required surface is obtained. This method is essential for nonmetallic materials (ceramics, glass, polymers, etc.). We used specimens in the form of plates, since this shape can be easily provided for the majority of substances, and at the same time it is suitable for measuring precisely the distance between the heated surface and the point of contact between the measuring thermocouple and the tested material. The heating of specimens with a bad heat conduction lasts longer than those with a good one. However, adequate adiabatic conditions at the instant of measurement were obtained for the former materials without special automatic control or regulation circuits.
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