Mass Flow Controller (MFC)/ Mass Flow Meter (MFM) for Gases
The mass flow controller (MFC) / meter (MFM) Type 8741 for gases is suitable for a wide range of applications and available with Industrial Ethernet, analogue or fieldbus interfaces. The version with CANopen based Bürkert system bus (büS) is suitable for the integration into existing CANopen networks, as well as Industrial Ethernet or fieldbus networks in combination with the fieldbus gateway of Type ME43. The second option is tailor-made for applications with many control loops. Up to 32 MFC / MFM can be connected to one fieldbus gateway. Type ME43 translates the internal CANopen based communication to industry standards for both Industrial Ethernet and fieldbuses. The mass flow controller / meter can always be switched between büS and CANopen communication. Type 8741 can be configured as MFM or MFC. Optional, up to four different gases calibrations can be stored in the device. 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.
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General Technical Data
Product Properties |
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Dimensions |
Detailed information can be found in chapter „4. Dimensions“ on page 5.
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Seal material |
FKM or EPDM (dep. on gas)
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Housing material | PC (Polycarbonate) |
Body material |
Aluminium or stainless steel
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Total weight
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Approx. 500 g (aluminium body) |
Configuration memory |
Detailed information can be found in chapter „8.2. Configuration management for easy device replacement“ on page 21.
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Device status |
RGB-LED based on NAMUR NE107
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Performance Data |
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Settling (MFC) / response (MFM) time
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< 300 ms
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Max. operating pressure (overpressure to the atmospheric pressure)
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10 bar (145 psi), for MFCs the max. operating pressure depends on the medium and the nominal valve size |
Measuring accuracy
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±0.8% o.R. ±0.3% F.S. (after 1 min. warm up time)
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Measuring span | 1:50, optional 1:100 |
Nominal flow range (Qnom)
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10 mlN/min to 160 lN/min (N2) |
Control valve (proportional valve)
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Normally closed
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Valve orifice range
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0.05…8 mm |
kVS value range | 0.00006…1.1 m3/h |
Repeatability | ±0.1% F.S. |
Electrical Data |
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Power Supply
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24 V DC
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Industrial Ethernet version electrical connection
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2 x RJ45 (Switch)
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büS/CANopen version electrical connection | Terminal block, 4 pin |
Analogue version electrical connection | D-Sub 9 or terminal block 6 pin |
Power consumption
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1…3 W (as MFM) Max. 3…19.5 W (as MFC, depending on type of solenoid control valve) |
Residual ripple
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±2%
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Voltage tolerance | ±10% |
Medium Data |
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Operating medium
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Neutral, non-contaminated gases, others on request
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Calibration medium | Operating gas or air |
Medium temperature |
-10 °C … +70 °C (-10 °C … +60 °C with oxygen)
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Process/Port Connection & Communication |
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Analogue interfaces
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4…20 mA, 0…20 mA, 0…10 V or 0…5 V Input impedance > 20 kΩ (voltage) or < 300 Ω (current) Max. Current: 10 mA (voltage output); Max. Load: 600 Ω (current output) |
Digital (communication) interfaces |
PROFINET, Ethernet/IP, EtherCAT, Modbus-TCP, büS (CAN-based Bus)/CANopen
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Port connection | NPT 1⁄4, G 1⁄4, flange, clamp ring or vacuum fitting, others on request |
Approvals and Certificates |
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Degree of protection
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IP20 |
Environment and Installation |
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Installation position
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Horizontal or vertical
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Ambient temperature |
– 10 … + 50 °C (higher temperatures on request)
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Accessories |
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Software
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Bürkert Communicator |
*For selecting thecorrect product please refer to the technical data, images and notes for proper use according to the data sheet, or contact Flu-Tech directly.
สอบถามข้อมูลเพิ่มเติม ติดต่อเรา :
02-384-6060 (อัตโนมัติ) [email protected] บริษัท ฟลูเทค จำกัด Flu-tech @flutech.co.th