DZDR-AS transient method thermal conductivity Tester, transient plane heat source method

Product Introduction

The DZDR-AS is an accurate, fast and easy-to-use thermal conductivity measuring instrument for measuring the thermal conductivity of thermal insulation materials.

Based on ISO 22007-2-2008, GB/T 32064-2015, GB/T42919.1-2023 and other standards, it can meet the test of different forms of materials, such as liquid, solid block, paste, powder, film, etc., with a short test time, and the test time of each sample is ≤ 160S; The test sensitivity is high, which can reach 0.00001;

Measuring principle

The transient planar heat source method is based on the principle of planar one-dimensional unsteady thermal conduction: the plane heat source in the infinite medium generates a dynamic temperature field inside the medium after receiving the instantaneous heating pulse in the initial thermal equilibrium state, and the thermal conductivity and thermal diffusion coefficient of the sample are calculated by fitting the temperature data generated by the heat conduction process and fitting the function curve. During the test, a constant direct current is applied to the heat source, and the temperature rise on the surface of the heat source increases, and the resistance increases, so that the bridge test system is unbalanced and produces potential changes. By the amount of change in the electrical parameter, the function of temperature increase over time is obtained.

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.