型号描述
8741 型必要时可以设置为 MFC 或者 MFM，且规定用于 büS 或者 CANopen 网络中。büS 网络技术以 CAN 物理层为基础，Bürkert 特别为涉及多个控制回路（通过工业以太网或者其他现场总线加以驱动）的应用而对其进行了研发。型号为 ME2X 的系统控制单元 (SCU, System Control Unit) 将客户的以太网通信传输到所有者的 büS 中，并驱动所有相连的电子设备。 设备之间的通信可以在 büS 和 CANopen 之间切换。借此，8741 型也可以集成到现有的 CANopen 基础设施中。 8741 型借助 MEMS 传感器进行气体质量流量的测量（用作 MFM）或者调节（作为 MFC）工作。传感器直接接触气体，因而可以在几百毫秒之内极其快速地做出反应。此外，测量工作不受压力或者温度波动的影响。可以对 MFC/MFM 进行校准，使其用于测量/调节两种不同的气体，用户可以在这两种气体之间进行切换。
）采用 MEMS 技术直接测量流量
2）测量和重复精度高
3）反应时间非常之短
4）现场总线通信基于 CANopen
Type Description
The mass flow controller / meter type 8741 for gases is intended for the use in a büS or CANopen network. The büS network technology is based on CAN physics and was developed by Bürkert especially for Industrial Ethernet or fieldbus communication in applications with multiple control loops. In combination with the system control unit (SCU) type ME2X, the CANopen based communication can be translated to the customer’s fieldbus. The mass flow controller (MFC) / meter (MFM) can always be switched between büS and CANopen communication. Given that, Type 8741 can also be directly integrated into existing CANopen networks. Type 8741 can be configured as MFM or MFC. Optional, two different gases can be calibrated. The thermal MEMS sensor is located directly in the gas stream and therefore reaches very fast response times. A direct-acting proportional valve as regulating unit guarantees high sensitivity. The integrated PI controller ensures outstanding control characteristics of the MFC / MFM. Type 8741 is especially designed for use in cabinets.
1）Nominal flow ranges from 0.010 lN/min to 80 lN/min
2）High accuracy and repeatability
3）Very fast response times
4）Communication via fieldbus based on CANopen
气体质量流量控制器部分订货号如下：
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