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8741 Mass Flow Controller & Flow Meter
Brand: Burkert Fluid Control Systems
The mass flow controller (MFC) / meter (MFM) type 8741 for gases is available in two versions:
- MFC / MFM type 8741 Standard: with Industrial Ethernet or Analog interface, suitable for a wide range of applications
- MFC / MFM type 8741 bus / CANopen: suitable for the integration in existing CANopen networks, as well as in combination with the system control unit (SCU) of type ME2X for büS networks.The second option was especially developed for applications with multiple control loops. The büS network technology is based on CAN physics. Up to 32 MFC / MFM can be connected to one SCU. One functionality of the SCU is the translation of 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 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.
Features
- Nominal flow range from 0.010 IN/min to 160 IN/min (re. nitrogen)
- High accuracy in measurement and repeat accuracy
- Very fast response times
- Easy device exchange due to configuration memory
- Optional: USP Class VI, FDA, EC 1935 compliant
Specifications
Housing Material
- Polycarbonate (PC)
Seal Material
- EPDM
- FKM
Base Block
- Aluminiu, Stainless Steel 1.4404/316L
Wetted Parts
- Stainless Steel 1.4310/302, 1.4113/434, 1.4305/303
LED Display
- RGB LED According to NAMUR NE107
Flow Rate
- Control Valve 0.00006 to 1.1 m³/hour (Kvs)
- Nominal Flow Range: 10 to 160 L/min (N2)
Operating Pressure
- Maximum 25 bar
Measurement Accuracy
- ± 0.3 % FS
- ± 0.8 % MV
Repeatability
- ± 0.1 % of Full Scale
Turndown Ratio
- 1:50
- 1:100 optionally
Environmental Protection
- IP20
Nominal Diameter
- 0.05 to 8 mm
Operating Voltage
- 24 Vdc
Voltage Tolerance
- ± 10 %
Power Consumption
- 1-3 W as MFM
Electrical Connection
- Analog: D-Sub 9-Pin Plug Connector, 6-Pin Terminal trip
- Bus/CANopen: 4-Pin Terminal Trip
- Industrial Ethernet: 2 x RJ45 Socket
- Modbus RTU: D-Sub Plug, 9-pin
Media
- Neutral, Pure Gases
Medium Temperature
- -10° to 70° C (14° to 158° F)
Approvals & Certifications
- CE
- cULus
- FDA
- USP
Port Connection
- G 1/4", 1/4" NPT
- Ssub-base
- Compression Fitting or Vacuum Fitting
- Clamp Connection
Communication
- büS/CANopen
- Industrial Ethernet: EtherCAT®, EtherNet/ IP, Modbus TCP, PROFINET
- Modbus RS-485/RTU list 0 and list 1
Ambient Temperature
- -10° to 50° C (14° to 122° F)
