Burkert 8626 Mass Flow Controller for Gases

The Burkert 8626 Mass Flow Controller (MFC) for Gases is an integrated system designed for precise control of gas mass flow, irrespective of pressure or temperature fluctuations. It incorporates a thermal flow sensor operating on the constant-temperature anemometer principle, a control electronics unit, and a direct-acting proportional valve (Type 2875) for regulation. This design allows for direct mass flow measurement without requiring corrections, offering excellent dynamics and reduced sensitivity to contamination due to the sensor being in the main flow channel. The MFC can be optionally calibrated for two different gases, enabling user switching between them.

Technical Specifications Flow Control:

• Nominal Flow Ranges (Qnom): 20 to 1500 lN/min (Nitrogen equivalent). Higher flows may be available on request.
• Turn-down Ratio: 1:50. (Note: With vertical installation and flow downwards, the turn-down ratio is 1:10.)
• Accuracy: ±1.5% of reading (o.R.) ±0.3% of full scale (F.S.) after 15 minutes warm-up time.
• Linearity: ±0.25% F.S.
• Repeatability: ±0.1% F.S.
• Settling Time: < 500 ms (t95%). (Described as "short settling times" in other sources). Operating Medium:
• Medium: Neutral, non-contaminated gases. Other gases available on request.
• Calibration Medium: Operating gas or air with correction factors.
• Medium Temperature: -10 to +70 °C. (-10 to +60 °C with oxygen). Pressure:
• Maximum Operating Pressure (Inlet): Up to 10 bar. (Independent of valve orifices for certain configurations). Valve Integration (Type 2875):
• Valve Type: Type 2875, a direct-acting plunger solenoid valve.
• Functionality: Proportional control via Pulse Width Modulation (PWM) signal. Offers precise regulation between fully open and closed positions. Integrated shut-off function.
• Orifice Sizes: 2 to 9.5 mm.
• Seat Seal: Elastomeric seat seal for tight closure.
• Plunger Design: Frictionless plunger for excellent proportional control and adjustment characteristic.
• Pressure Range: 0 to 25 bar.
• Temperature Range: -10 to +90 °C. Electrical:
• Operating Voltage: 24 V DC.
• Voltage Tolerance: ±10%.
• Residual Ripple: < 2%, < 5%.
• Power Consumption: 20 W – max. 50 W, 12.5 W - 37 W (depending on version), 20 W – max.
• Electrical Connection: 8-pin round socket. Options may include M16 plug for fieldbus versions. Interfaces/Communication:
• Analog Signals: Standard analog signals available.
• Digital Communication (Fieldbus): Optional PROFIBUS-DP, DeviceNet, CANopen available. Physical:
• Body Material: Aluminum (anodized) or stainless steel.
• Housing Material: Aluminum (coated).
• Seal Material: FKM, EPDM (others on request).
• Port Connections: G 1/4", 3/8", 1/2", 3/4". (Also listed as G 1/4", 3/8", 1/2", 3/4", 1" in other sources).
• Type of Protection: IP65. Environmental:
• Ambient Temperature: -10 to +45 °C. (Higher temperatures on request). Compatibility:
• Combinable Valves: Can be combined with Type 0330 (3/2- or 2/2-way valve), Type 6013 (2/2-way valve), Type 6027 (Direct-acting 2/2-way valve), Type 8619 (Multi-channel program controller), Type 8605 (PWM control electronics), Type 2518 (Cable plug), Type 8611 (eCONTROL – Universal controller). Important Note: According to available information, the Burkert Type 8626 has been discontinued as of July 1, 2024. Why Choose Aumictech for Burkert 8626 Mass Flow Controller for Gases (MFC)? At Aumictech, we specialize in supplying high-end gas flow control equipment. Whether you need precise gas mass flow regulation, reliable performance in demanding environments, or seamless integration with digital communication protocols, our team ensures the Burkert 8626 Mass Flow Controller for Gases (MFC) delivers maximum performance for your application.