BS476-6防火測試提供了有關簡單材料，複合材料或組合材料對艙室內火勢增長速率的影響的信息。
儘管通常被稱為“熱釋放”測試，但結果代表了多種因素的複雜得多，包括點火，放熱和熱性能。 比較設備的煙囪中的廢氣溫度/時間關係，以作為參考材料和被評估產品。 參考材料還使用了如校正紙，以確保設備的正確設置和操作以及測試之間的一致性。
規格及特點：
儀器特點：
• 不銹鋼腳座和實驗箱支撐底盤
• 12mm厚的矽酸鈣燃燒室
• 12mm厚的矽酸鈣樣品架
• 3個用於各種厚度樣品的矽酸鈣隔板
• 3折不燃陶瓷墊片
• 低反射黑色精鋼煙囪和風帽組件，配有熱電偶安裝點
• 相容的不銹鋼燃氣燃燒器
• 兩個高功率插裝加熱器與高溫電源線連接
• 兩個配有陶瓷絕緣子的K型礦物絕緣熱電偶
控制模組功能：
• 控制氣體儀表，包括電子氣體開關閥，流量調節閥，流量計和壓力計
• 帶冷端補償的溫度測量
• 具有反饋迴路的智能單相功率控制器，可精確控制電加熱元件
• 數字瓦傳感器，可透過軟體控制電加熱器的功率值
• 軟體界面集成計時器，數字顯示
• 桌上型控制箱，帶3米拉線連接電纜組件
• 如果設備遠離控制模塊，則將手機放在遙控器上以點燃燃氣燃燒器
數據蒐集系統和軟體套裝；
• 提示的軟體界面
• 數據記錄和顯示前圍溫度隨時間變化
• 數據記錄和顯示環境溫度隨時間變化
• 以kW顯示功率值
• 校正例行程序
• 輸出上升和校正值的計算
技術數據和要求：
電氣：230 volts – 額定10 Amps
環境溫度：工作溫度10°C至35°C
尺寸：儀器：400mm（W）x 600mm x（H）x 300mm（D）
控制模組：400mm（W）x 500mm x（H）x 400mm（D）
氣體供應：標準中規定的氣體供應為BS 4947中規定的標準測試氣體G112。
流量：燃燒器的氣流從0到5 nl / min可調
壓力：1kPa
The BS476-6 Fire Propagation test provides information on the influence that a simple material, a composite of materials or an assembly of materials, would make to the rate of fire growth within a compartment.
Although often termed a “heat release” test, the result represents a much more complicated product of several factors including ignition, heat release and thermal properties. Comparisons are made between the effluent gas temperature/time relationships within the chimney of the apparatus for a reference material and for the product under evaluation. The reference material is also used as a calibration sheet to ensure correct setting and operation of the apparatus and consistency between tests.
Specification and Features:
Apparatus Features:
•Stainless steel legs and chamber support chassis
•12mm thick calcium silicate combustion chamber
•12mm thick calcium silicate specimen holder
•3 off Calcium silicate spacer boards for various thickness samples
•3 off Non combustible ceramic gaskets
•Low reflective black finished mild steel Chimney and Cowl assembly complete with thermocouple mounting points
•Compliant stainless steel gas burner
•Two high power cartridge heaters connected with high temperature supply cable
•Two K type mineral insulated thermocouples complete with ceramic insulators
Control module features:
•Control gas instrumentation including electronic gas on/off valve, flow regulating valve, flow meter and manometer
•Temperature measurement with cold junction compensation
•Intelligent single phase power controller with feedback loop for accurate control of electric heating elements
•Digital Watt transducer allowing software control of power value of electric heaters
•Integrated timer with digital display on software interface
•Bench top control enclosure with 3 meter umbilical connecting cable assembly
•Remote handset to allow ignition of Gas burner if apparatus is located away from control module
Data Acquisition system and Software Package featuring;
•Prompted software interface
•Data recording and display of cowl temperature against time
•Data recording and display of ambient temperature against time
•Display of power value in kW
•Calibration routine
•Calculation of output rise and calibration value
Technical Data and Requirements:
Electrical: 230 volts – Nominal 10 Amps
Ambient Temperature: Operating 10°C to 35°C
Dimensions: Apparatus: 400mm (W) x 600mm x (H) x 300mm (D)
Control module: 400mm (W) x 500mm x (H) x 400mm (D)
Gas Supplies: The gas supply specified in the Standard is Standard test gas G112, as specified in BS 4947.
Flow: Gas flow for burner adjustable from 0 to 5 nl/min
Pressure: 1kPa
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