8741 Mass Flow Controller & Flow Meter

Brand: Burkert Fluid Control Systems
Does not ship to Virginia, United States

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
  • FOUNDATION Fieldbus, CANopen
  • PROFINET
  • RJ45” EtherNet/IP (EtherCAT 2 x RJ45)
  • USB

Consumption

  • Power Consumption: 1-3 W as MFM
  • Power Consumption: Max.

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: Max.

Output Load

  • Analog: Max.

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

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