*德國WAZAU CHD *熱傳導(dǎo)測試儀
設(shè)備名稱：熱傳導(dǎo)測試儀
品牌型號(hào)：德國WAZAU
產(chǎn)品用途：根據(jù)ISO12127/EN702相關(guān)標(biāo)準(zhǔn)用于對(duì)*熱傳輸行為的測試研究
*德國WAZAU CHD *熱傳導(dǎo)測試儀產(chǎn)品描述：
測量*及材料的接觸熱通量。
實(shí)驗(yàn)前，加熱筒加熱到溫度，試樣安裝到量熱計(jì)上。量熱計(jì)以5 mm/s的速度向加熱筒移動(dòng)，并在接觸后，施加45N載荷。用量熱計(jì)測量10°C溫度上升時(shí)間閾值。加熱筒的溫度可從室溫調(diào)節(jié)到500°C。
技術(shù)參數(shù)：
測試標(biāo)準(zhǔn)： DIN EN 702，ISO 12127-1
傳感器：量熱計(jì)
電源： 230 VAC / 350 VA
氣源：氧氣 / 乙炔氣
設(shè)備尺寸： 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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