型號(hào)描述
8626 型質(zhì)量流量測(cè)量?jī)x構(gòu)成了一個(gè)集成式系統(tǒng)，該系統(tǒng)包含了流量傳感器組件、電子調(diào)節(jié)設(shè)備以及相應(yīng)的調(diào)節(jié)元件。利用這種測(cè)量?jī)x可以將氣體的質(zhì)量流量保持恒定或跟蹤規(guī)定的額定值輪廓，不會(huì)受到干擾因素（例如，壓力或溫度波動(dòng)）影響。傳感器根據(jù)熱力原理工作（恒定溫度風(fēng)速計(jì)）。測(cè)量在主流中進(jìn)行，直接提供質(zhì)量流量，不需修正（參見(jiàn)第 2 頁(yè)描述）。在數(shù)字流量調(diào)節(jié)器中，會(huì)對(duì)額定值與實(shí)際值進(jìn)行比較，并計(jì)算用于比例閥的調(diào)節(jié)信號(hào)。直動(dòng)式比例電磁閥根據(jù)經(jīng)過(guò)驗(yàn)證的升降式銜鐵原理工作，受一個(gè) PWM 電壓信號(hào)的控制。一個(gè)集成式控制裝置確保了，除了其調(diào)節(jié)功能之外，閥門(mén)還能在達(dá)到規(guī)定的額定值 0% 時(shí)同時(shí)密封關(guān)閉。在主流中進(jìn)行測(cè)量的基礎(chǔ)上，8626 型 MFC 的特征在于，具有高動(dòng)力和微小的污染敏感度。它可以作為流量調(diào)節(jié)器，應(yīng)用于多種用途。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：工藝技術(shù)、熱處理、環(huán)境技術(shù)、材料涂層、燃燒器控制以及燃料單元技術(shù)。
1）主電流裝置，適合額定流量范圍 20 lN/min 至 1500 lN/min；1/4” 至 3/4”
2）高精度
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 8626 is suited for regulating the mass flow of high gas flows. The thermal inline 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 8626 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 8626 is especially designed for use in harsh environments due to a low sensitivity to contamination and the high protection class. The MFC fits for various applications, like e.g. burner controls, heat treatment, metallurgy, food and beverage industry, environmental technology, material coatings, fuel cell technology or test benches.
1）Nominal flow ranges from 20 lN/min up to 2500 lN/min
2）High accuracy and repeatability
3）Short settling times
4）Protection class IP65
5）Optional: Fieldbus interface
質(zhì)量流量測(cè)量?jī)x部分訂貨號(hào)如下：
181500 SERV-8626-LABO-25--00181500
646138 KOMP-000-8626-F646-138-00-646138B
658500 KOMP-000-8626-G658-500-00-658500
917623 KOMP-455-8626-F917-623-00-917623R
