型號描述

8626 型質(zhì)量流量測量儀構(gòu)成了一個集成式系統(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。利用這種測量儀可以將氣體的質(zhì)量流量保持恒定或跟蹤規(guī)定的額定值輪廓，不會受到干擾因素（例如，壓力或溫度波動）影響。傳感器根據(jù)熱力原理工作（恒定溫度風(fēng)速計(jì)）。測量在主流中進(jìn)行，直接提供質(zhì)量流量，不需修正（參見第 2 頁描述）。在數(shù)字流量調(diào)節(jié)器中，會對額定值與實(shí)際值進(jìn)行比較，并計(jì)算用于比例閥的調(diào)節(jié)信號。直動式比例電磁閥根據(jù)經(jīng)過驗(yàn)證的升降式銜鐵原理工作，受一個 PWM 電壓信號的控制。一個集成式控制裝置確保了，除了其調(diào)節(jié)功能之外，閥門還能在達(dá)到規(guī)定的額定值 0% 時同時密封關(guān)閉。在主流中進(jìn)行測量的基礎(chǔ)上，8626 型 MFC 的特征在于，具有高動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)整時間短
4）可選的現(xiàn)場總線

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)量流量測量儀部分訂貨號如下：

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