型號(hào)描述
型號(hào) 8711 是一臺(tái)用于調(diào)節(jié)氣體質(zhì)量流量的裝置，適合工藝技術(shù)領(lǐng)域內(nèi)大多數(shù)的用途。在數(shù)字的電子調(diào)節(jié)設(shè)備中，會(huì)將以硅芯片為基礎(chǔ)的傳感器（參見第 2 頁的描述）提供的數(shù)值，與規(guī)定的額定值進(jìn)行比較；存在調(diào)節(jié)偏差時(shí)，會(huì)通過一種 PI 調(diào)節(jié)算法對(duì)發(fā)送到比例閥上的調(diào)節(jié)參數(shù)進(jìn)行修改，由此補(bǔ)償調(diào)節(jié)偏差。因?yàn)閭鞲衅髦苯犹幱跉饬髦?，所以測(cè)量反應(yīng)時(shí)間非常短。質(zhì)量流量可以保持在一個(gè)確定的數(shù)值上，或遵循規(guī)定的額定值曲線輪廓，而不會(huì)受到壓力波動(dòng)或設(shè)備中其他變化的影響?？舍槍?duì)兩種不同的氣體對(duì)型號(hào) 8711 進(jìn)行校準(zhǔn)，用戶可在兩者之間進(jìn)行轉(zhuǎn)換。一個(gè)直動(dòng)式比例閥作為調(diào)節(jié)元件，確保了高反應(yīng)靈敏度和裝置良好的調(diào)節(jié)特性。典型的用途是，在以下領(lǐng)域中進(jìn)行氣體計(jì)量或配制混合氣體：試驗(yàn)臺(tái)、生物反應(yīng)堆、熱處理、材料涂層、燃燒器控制以及燃料電池技術(shù)。
1）采用 MEMS 技術(shù)的直接流量測(cè)量裝置，適合額定流量范圍 10 mlN/min 至 80 lN/min (N2)
2）高精度和高重復(fù)精度
3）調(diào)整時(shí)間短
4）可選的現(xiàn)場(chǎng)總線
Type Description
The mass flow controller (MFC) Type 8711 is suited for regulating the mass flow of gases over a big flow range. The thermal MEMS sensor is located directly in the gas stream and therefore reaches very fast response times. A direct-acting proportional valve from Bürkert guarantees a high sensitivity. The integrated PI controller ensures outstanding control characteristics of the MFC. Type 8711 can optionally be calibrated for two different gases; the user can switch between these two gases. As electrical interfaces both, analog standard signals and fieldbuses are available. The mass flow controller type 8711 fits for various applications, like e.g. burner controls, heat treatment, material coatings, bio reactors, fuel cell technology or test benches.
1）Nominal flow ranges from 0.010 lN/min to 80 lN/min
2）High accuracy and repeatability
3）Very fast settling times
4）Optional: Fieldbus interface
氣體質(zhì)量流量控制器部分訂貨號(hào)如下：
667699 KOMP-005-8711-F667-699-00-667699
