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描述
DRX-3导热系数测试设备
概述
DRX-3 thermal conductivity tester adopts transient hot wire method, including cross line method and parallel line method, mainly measures the thermal conductivity, 导热系数 (thermal diffusion coefficient) and specific heat capacity of solid and powdery materials at different temperatures. It has the characteristics of high precision, high resolution and high reproducibility. Automatic measurement by computer control. Widely used in research colleges, quality inspection, factories and mines and other departments to measure the thermal conductivity of materials.
The instrument is re-developed and designed on the basis of the original DRX-2 in our factory, which improves the measurement accuracy and reproducibility, has a more reasonable structure and is more convenient to use. Type classification: DRX-3A mainly uses cross hot wire method (also can be used parallel line method to measure materials below 5w/mk); DRX-3B uses the parallel line method to measure materials smaller than 25w/mk.
仪器参考标准: 国标/T 5990-2006 “Test method for thermal conductivity of Shaped Heat insulation refractory products (hot wire method)”; 国标/T 17106-1997 “Experimental method for Thermal conductivity of Refractory materials (parallel line method)”; 国标/T 11205-2009 “Rubber thermal conductivity determination (transient hot wire method)”; GB/T10297-2015 “Determination of thermal conductivity of non-metallic solid materials (hot wire method)” ETC.
the main technical indicators
1, 测量范围: DRX-3A(cross line method) 0.015~ 2.0W /(m·K)
DRX-3A(Parallel line method) 0.015~ 5.0W /(m·K)
DRX-3B(Parallel line method) 0.015~25.0 W/(m·K)
2, 温度范围: the conventional test is room temperature, can be selected according to user requirements of different thermostatic devices and test hotlines, do different temperature tests, the cost is calculated separately, 如下:
-40 〜 120 ℃ (need to be equipped with high and low temperature thermostat) with copper-Constantan hotline
Room temperature ~ 1000 ℃ (need to be equipped with resistance wire resistance furnace) with nickel chrome-nickel silicon or platinum-platinum rhodium hot wire
Room temperature ~ 1300 ℃ (silicon carbon rod resistance furnace is required) with platinum-platinum-rhodium hot wire
Room temperature ~ 1600 ℃ (need to be equipped with silicon molybdenum rod resistance furnace) with platinum – platinum rhodium hot wire
3, measurement accuracy: <± 5.0%
4, 样本量: 2 pieces of not less than 40mm×80mm×114mm mutually symmetrical cuboid or 2 pieces of cross-section diameter not less than 80mm, length not less than 114mm superimposed cylinder; (or customized according to user requirements),
5, 温度分辨率: 0.001℃
6, hot wire power supply: DRX-3A current resolution 0.01mA, voltage resolution 0.1mV
DRX-3B current resolution 0.1mA, voltage resolution 0.1mV.
7, equipment power supply: voltage 220V; Frequency 50Hz; Power 500W (requirements for electric furnace temperature controller power supply refer to the electric furnace temperature controller manual),
