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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.
Specifications
Ambient Temperature Range
- -10° to 50° C (14° to 122° F)
Approvals & Certifications
- CE
BSP Connection
- G 1/4" Female
Communication
- CAN Bus
- Fieldbus, CANopen
- Profinet
- RJ45" Ethernet/IP (EtherCAT 2 x RJ45)
- USB
Consumption
- Power Consumption: 1-3 W as MFM
- Power Consumption: Maximum
Electrical Connectors
- Analog: 6-Pin Terminal Block
- Analog: D-Sub 9-Pin Plug Connector
- Bus/CANopen: 4-Pin Terminal Block
- Industrial Ethernet: 3-Pin Terminal Block
- Industrial Ethernet: RJ45 Socket
Enclosure, Body Material
- Aluminum
- Polycarbonate
- Stainless Steel
Environmental Protection
- Protection Class: IP20
Flow Rate
- Control Valve 0.00006 to 0.32 m³/hour (Kvs Value)
- Nominal Flow Range: 0.01 to 80 LPM
Function
- Close-Tight
- Firmware Update
Indication
- Device Status: RGB-LED Display on NAMUR NE107
Input
- Analog: 0-10 V
- Analog: 0-20 mA
- Analog: 0-5 V
- Analog: 4-20 mA
Input Impedance
- Analog: 20 KiloOhms (Voltage)
Measurement Accuracy
- ± 0.3% of Full Scale after 1 Minute Warm-Up Time
- ± 0.8% of Reading after 1 Minute Warm-Up Time
Media
- Air
- Neutral Gasses
Mounting Position
- Horizontal
- Vertical
NPT Connection
- 1/4" NPT Female
Operating Pressure
- Maximum
Orifice Size
- Control Valve: 0.05 to 4 mm
Output
- Analog: 0-10 V
- Analog: 0-20 mA
- Analog: 0-5 V
- Analog: 4-20 mA
- Analog: Maximum
Output Load
- Analog: Maximum
Power Supply
- 24 Vdc
Principle of Operation
- Thermal, Calorimetric
Process Temperature
- -10° to 60° C (14° to 140° F) with Oxygen
- -10° to 70° C (14° to 158° F)
Repeatability
- ± 0.1% of Full Scale
Response Time
- Settling Time (t95%): < 300 milliseconds
Seat / Seal Material
- Seal: EPDM
- Seal: FKM
Sensor Circuit
- Residual Ripple: ± 2%
System Requirements
- MS-Windows
Tolerance
- Voltage: ± 10%
Turndown
- 50:01:00
- 100:01:00
