*德国WAZAU CHD *热传导测试仪
设备名称：热传导测试仪
品牌型号：德国WAZAU
产品用途：根据ISO12127/EN702相关标准用于对*热传输行为的测试研究
*德国WAZAU CHD *热传导测试仪产品描述：
测量*及材料的接触热通量。
实验前，加热筒加热到温度，试样安装到量热计上。量热计以5 mm/s的速度向加热筒移动，并在接触后，施加45N载荷。用量热计测量10°C温度上升时间阈值。加热筒的温度可从室温调节到500°C。
技术参数：
测试标准： DIN EN 702，ISO 12127-1
传感器：量热计
电源： 230 VAC / 350 VA
气源：氧气 / 乙炔气
设备尺寸： 600 x 250 x 650 mm (W x D x H)
重量： 30 kg
Wazau-CHD - Contact Heating Device
1. general information
The Wazau-CHD test device serves for test regarding to EN702 to examine the thermal transfer behavior of protective cloths.
The main test procedure is given as followed:
A piece of protective cloth (specimen) is mounted at the surface of a calorimeter and is lifted upwards to a heater at a constant velocity. The initial temperature of the calorimeter has to be stored when a remaining gap of 10mm between heater and calorimeter is left and the device has to continue lifting until a close contact between calorimeter, specimen and heater is made.
The contact area, the thermal capacity and the component geometry of all involved parts is given by EN702, the defined contact force is assured by a specific weight of the heating-unit, which is lifted by the drive at contact.
The temperature difference between calorimeter and heater causes a rising temperature at the calorimeter and the time it takes to increase it by 10°C is the significant result of the test, which depends on the thermal isolation behavior of the specimen.
To assume comparable results, test have to be performed at defined ambient conditions using pre-conditioned specimen.
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