8626 Mass Flow Controller

Brand: Burkert Fluid Control Systems

The mass flow controller (MFC) type 8626 is suited for regulating the mass flow of high gas flows. The thermal inline sensor is located directly in the gas stream and therefore reaches very fast response times. A direct-acting proportional valve from Bürkert guarantees a high sensitivity. The integrated PI controller ensures outstanding control characteristics of the MFC. 

Type 8626 can optionally be calibrated for two different gases; the user can switch between these two gases. As electrical interfaces both, Analog standard signals and fieldbuses are available. The mass flow controller type 8626 is especially designed for use in harsh environments due to a low sensitivity to contamination and the high protection class. 

The MFC fits for various applications, like e.g. burner controls, heat treatment, metallurgy, food and beverage industry, environmental technology, material coatings, fuel cell technology or test benches.

Specifications

Accuracy

  • ± 0.3% of Full Scale after 15 minutes Warm-Up Time
  • ± 1.5% of Reading after 15 minutes Warm-Up Time

Ambient Temperature Range

  • -10° to 45° C (14° to 113° F)

Applications

  • Beverage & Food Industry
  • Burner Control
  • Environmental Technology
  • Fuel Cell Technology
  • Harsh Environments
  • Heat Treatment
  • Material Coatings
  • Metallurgy
  • Test Bench Equipment

Approvals & Certifications

  • CE

BSP Connection

  • G 1" Female
  • G 1/2" Female
  • G 1/4" Female
  • G 3/4" Female
  • G 3/8" Female

Communication

  • DeviceNet Bus
  • Digital
  • Fieldbus, CANopen
  • Modbus RTU
  • Profibus DP
  • RS-232
  • RS-422
  • RS-485
  • USB

Consumption

  • Power Consumption: 12.5-37 W (Depending on Version)

Electrical Connectors

  • DeviceNet & CANopen: M12 Plug, 5-Pin
  • D-Sub 15-Pin Connector
  • PROFIBUS-DP, DeviceNet & CANopen & RS-485 Version: D-Sub 9-Pin Connector
  • PROFIBUS-DP: 5-Pin M12 Socket
  • Socket M16, 8-Pin Round Connector

Electrical Contacts

  • Normally Closed
  • Normally Open

Enclosure, Body Material

  • Aluminum
  • Stainless Steel

Environmental Protection

  • Protection Class: IP65

Flow Rate

  • Control Valve: 0.02 to 2.8 m³/hour (Kvs Value)
  • Nominal Flow Range: 20 to 1,500 L/minute

Function

  • Close-Tight

Indication

  • LED Indication for Power, Communication, Limit & Error

Input Impedance

  • Analog Communication: 20 KiloOhms (Voltage)

Input Signal

  • Analog Communication: 0-10 V
  • Analog Communication: 0-20 mA
  • Analog Communication: 0-5 V
  • Analog Communication: 4-20 mA

Media

  • Gas
  • Neutral Gasses

Mounting Position

  • Horizontal
  • Vertical

NPT Connection

  • 1" NPT Female
  • 1/2" NPT Female
  • 1/4" NPT Female
  • 3/4" NPT Female
  • 3/8" NPT Female

Operating Pressure

  • Maximum

Operating Voltages

  • 24 Vdc

Orifice Size

  • Control Valve: 0.8 to 12 mm

Output

  • Analog Communication, Maximum
  • Analog Communication: 0-10 V (Actual Flow)
  • Analog Communication: 0-20 mA (Actual Flow)
  • Analog Communication: 0-5 V (Actual Flow)
  • Analog Communication: 4-20 mA (Actual Flow)

Output Load

  • Analog Communication, Maximum

Process Temperature

  • -10° to 60° C (14° to 140° F) with Oxygen
  • Gas: -10° to 70° C (14° to 158° F)

Relay Output

  • One Relay Output for RS-485 Version: 1 A at 25 V, 25 VA
  • Two Relay Output for Analog & Fieldbus Versions: 1 A at 60 V, 60 VA

Repeatability

  • ± 0.1% of Full Scale

Response Time

  • Setting Time: < 500 milliseconds

Seat / Seal Material

  • Seal: EPDM
  • Seal: FKM

Sensor Circuit

  • Residual Ripple: < 2%

Sensor, Probe Style

  • Thermal Inline Sensor

Tolerance

  • Voltage: ± 10%

Turndown

  • 1:50

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