型号描述
8626 型质量流量测量仪构成了一个集成式系统，该系统包含了流量传感器组件、电子调节设备以及相应的调节元件。利用这种测量仪可以将气体的质量流量保持恒定或跟踪规定的额定值轮廓，不会受到干扰因素（例如，压力或温度波动）影响。传感器根据热力原理工作（恒定温度风速计）。测量在主流中进行，直接提供质量流量，不需修正（参见第 2 页描述）。在数字流量调节器中，会对额定值与实际值进行比较，并计算用于比例阀的调节信号。直动式比例电磁阀根据经过验证的升降式衔铁原理工作，受一个 PWM 电压信号的控制。一个集成式控制装置确保了，除了其调节功能之外，阀门还能在达到规定的额定值 0% 时同时密封关闭。在主流中进行测量的基础上，8626 型 MFC 的特征在于，具有高动力和微小的污染敏感度。它可以作为流量调节器，应用于多种用途。典型的用途是在以下领域中进行气体计量或配制混合气体：工艺技术、热处理、环境技术、材料涂层、燃烧器控制以及燃料单元技术。
1）主电流装置，适合额定流量范围 20 lN/min 至 1500 lN/min；1/4” 至 3/4”
2）高精度
3）调整时间短
4）可选的现场总线
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
质量流量测量仪部分订货号如下：
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
