粉塵最小點燃能量測試儀

	最小點火能量測試儀用於測試能夠引起粉塵雲爆炸的 最小點燃能量，評價粉塵雲的潛在爆炸危險性的儀器， 符合 EN 13821 標準。可燃物質的最小點火能量（MIE） 係指儲存在電容器中的電能的最低值，在大氣壓力和室溫 條件下，該值在放電時剛好足以點燃被測材料（燃料）的 最易燃燒的燃料/空氣混合物。   應用 粉塵彌散的最小點火能量是評估加工廠危險狀況的關鍵參 數之一。MIE 測試可確定電火花點燃彌散粉塵樣本所需的 能量。 這種測試方法是認證機構、大學和其它研究機構用 來鑑定粉塵雲爆炸性的一套標準測試的重要組成部分。
樣品點火後的 MIE-D 實驗

優勢和特點

• 對高達 1 J 的七個預設能階進行標準測量，也可對使用者指定的 1 mJ 至 10 J 範圍內的任何能階進行測量 ( 每次步階為 1 mJ )。
• 可選擇測量整個火花產生迴路和火花間隙的能量平衡。
• 三種火花觸發模式：高壓開關、移動電極或塵埃雲本身觸發。
• 自動運轉  - 氣動驅動打開管道和抽出電極。
• 帶有 TFT 面板的使用者介面。
• 不銹鋼外殼堅固耐用。
• 該儀器還可選擇性地配備用於低爆炸物濃度 (LEC) 測量。
• 此外，還可提供用於爆炸壓力測定的不銹鋼型號，適用於樣品量較少的非標準測量。

控制視窗螢幕截圖

用火花點燃奶粉	奶粉的燃燒

合規

• EN 13821
• ASTM E 2019
• IEC 61241-2-3 - replaced by ISO/IEC 80079-20-2:2016
• ISO/IEC 80079-20-2:2016

MIE-D experiment after ignition of a sample

The MIE-D 1.2™ is an apparatus for measurement of minimum ignition  energy of dust dispersions according to EN 13821. The minimum ignition energy (MIE) of a combustible substance is the lowest value of the electrical energy stored in a capacitor, which upon discharge just suffices to ignite the most readily ignitable fuel/air mixture of the tested material (fuel) at the atmospheric pressure and room temperature. APPLICATIONS The minimum ignition energy of dust dispersions is one of the key parameters for an assessment of the hazard situation in process plants. The MIE test determines the amount of energy required for an electric spark to cause ignition of dispersed dust sample. This testing method is an essential part of a standard set of tests used by certified bodies, Universities and other research organizations to characterize the dust explosibility.

ADVANTAGES & FEATURES

• Standard measurement on seven pre-set energy levels up to 1 J, but optionally also on any user specified levels in the range of 1 mJ to 10 J with 1 mJ step
• Optional measurement of energy balance throughout the spark generating circuit and spark gap
• Three modes of spark triggering: high-voltage switch, moving electrode or triggering by dust cloud itself
• Automatic operation – pneumatically driven opening of the tube and withdrawal of the electrodes
• Automatically controlled and pneumatically operated instrument
• User interface with TFT panel
• Resistant stainless-steel case
• Optionally, the instrument can be equipped for Lower Explosive Concentration (LEC) measurement
• Optionally, stainless-steel version for explosion pressure determination suitable for non-standard measurements with small sample amounts can be delivered

Screenshot of the control window

Spark ignition of dried milk	Burning of dried milk

 
COMPLIANCE 

• EN 13821
• ASTM E 2019
• IEC 61241-2-3 - replaced by ISO/IEC 80079-20-2:2016
• ISO/IEC 80079-20-2:2016