Burkert 8746 gas mass flow meter MFM

Burkert 8746 Gas Mass Flow Meter (MFM) Advantages: The Burkert 8746 Gas Mass Flow Meter

• is a type of gas mass flow meter. It is suitable for a wide range of applications, including metal and glass production or processing, fermentation processes, test benches, filling lines, and packaging machines. The Burkert 8746 Gas Mass Flow Meter is available in two variants: one with different analog and digital (communication) interfaces, and another with a CANopen-based interface. The second version is suitable for integration into existing CANopen networks, or—in combination with a Burkert fieldbus gateway—integration into all current standard industrial Ethernet or fieldbuses. This version is tailored for applications with multiple control segments. A single fieldbus gateway can connect up to 32 MFC/MFM units. The gateway transmits internal communication based on CANopen to industrial Ethernet or fieldbus standards. The mass flow controller/meter can switch between büs and CANopen communication at any time. The 8746 model can be configured as MFM or MFC as needed. (Optional) The device can store up to four calibration curves. A thermally embedded sensor directly in the total current enables fast response time and high measurement accuracy during long-term stable calibration. Direct-acting Bürkert solenoid proportional valves or engine valves ensure high sensitivity as actuators. An integrated PI controller guarantees MFC* control performance. even at high flow rates and is particularly suitable for use in harsh environments due to its high IP protection rating and explosion-proof capability. Burkert 8746 Gas Mass Flow Meter Features: Rated flow range from 20 lN/min to 2,500 lN/min;
• High accuracy and repeatability with extremely fast response;
• Durable flow calibration;
• Configuration memory simplifies equipment changeover. Optional: ATEX II 3G/D class or USP VI, FDA, EC 1935 conformity markings.
• Burkert 8746 Gas Mass Flow Meter MFM General Technical Specifications 1.1. General Information Product Features Materials Basic Module Aluminum or Stainless Steel Housing Die-cast Aluminum (painted) Seals FKM or EPDM (depending on gas) 1.) Configuration Memory Card (within the supply) EEPROM (μSIM card: saves all parameters related to equipment changeover (such as different fieldbus or controller settings) without the use of software tools) Electrical Parameters Operating Voltage 24 V DC Voltage Tolerance ±10% Residual Ripple ±2% Electrical Interface M12 plug, 5 pins For analog and PROFIBUS-DP specifications, also: M12 Socket, 5-pin Medium Parameters: Working medium: Neutral, uncontaminated gas (please consult us if other media are required) Calibration medium: Working gas or air with correction function Medium temperature: -10 °C 2.)…+70 °C (For oxygen, -10 °C 2.)…+60 °C) Process/Pipeline Interface and Communication Pipeline Interface: G or NPT ¼", ⅜", ½", ¾", 1" Flange Digital (Communication) Interface: CANopen, CAN-based büs or PROFIBUS-DP Analog Interface: 4…20 mA, 0…20 mA, 0…10 V or 0…5 V Input Impedance: > 20 kΩ (voltage) or < 300 Ω (current) Maximum Current: 10 mA (voltage output);
• Maximum Load: 600 Ω (current output) Ambient and Installation: Installation location: Horizontal or vertical Ambient temperature: -10 °C…+50 °C 3.) (Higher temperature configurations are available upon request) Appendix 8746 Burkert Gas Mass Flow Meter Software Tool Bürkert Communicator Software Details: Please refer to Section 9.1. Bürkert Communicator Software on page
• 1.) When using engine valves: - 3280 type DN 4: PEEK sealing ring - 3285 type: Sealing ring made of Al2O3 2.) Minimum medium temperature when using engine valves: 0 °C 3.) Maximum ambient temperature for cULus certified versions: 40 °C 1.2. Specifications with Electromagnetic Proportional Valves: The 8746 model can be configured as MFC or MFM as required. The MFC specification uses direct-acting 287x series proportional valves. These electromagnetic proportional valves have no current closing, representing the highest measurement accuracy and repeatability within hundreds of microseconds of settling/response time. Product Features and Dimensions: For more detailed information, please refer to Section
• Dimensions on page
• Total weight: Approximately 1.8 kg (Al, 16 W valve) Approximately 3.1 kg (VA, 16 W valve) Proportional valve (electromagnetic) No-current shut-off valve Nominal diameter 0.8…12 mm kVS value 0.02…2.5 m³/h LED display RGB LED conforming to NAMUR NE107 standard 8746 Model Visit product website } 5 | 23 Performance Data Rated flow range (Q rated) 20…1500 lN/min (N2) MFM up to 2500 lN/min (N2) Measurement range 1:50 l.) Maximum working pressure (pressure above atmospheric pressure) 10 bar, the maximum working pressure of MFC depends on the medium and the effective diameter of the valve, MFM can be selected up to 25 bar of working pressure Measurement accuracy ± 1.5% of the measured value ± 0.3% of the final value (after a 15-minute heating time) Repeatability ± 0.1% of the final value Settling time (MFC)/Response time (MFM) (t95%) <500 ms Electrical Parameters Power Consumption 2.) Maximum 2 W (as MFM) Maximum 10.5 to 29.5 W (as MFC, depending on proportional valve model) Environmental and Installation Protection Rating IP65 and IP67 1.) In a vertical installation position with top-down flow, the measurement range is 1:10. 2.) These information are based on typical power consumption (at an ambient temperature of 23 °C, rated flow rate, and 30 min regulation mode). Information may vary according to UL 61010-1 (see instruction manual). 1.3. Specifications of the Burkert Gas Mass Flow Meter with Burkert Electric Proportional Valve The 8746 model with electric proportional valve is particularly suitable for flow rates up to 22 bar. For applications requiring high input pressure or high flow rates (with low pressure loss). These valves significantly reduce equipment energy consumption due to their extremely low holding power. The electric valve remains in its position even without current. The maximum on-time of the motor depends on the ambient temperature. On-time refers to the motor's on-time, not the device's on-time. Derating Curve" on page
• Burkert 8746 Gas Mass Flow Meter Product Features and Dimensions: For more detailed information, see "4. Dimensions" on page
• Total weight: Approx. 1.67 kg (A1, Standard, Valve Model 3280) Approx. 2.94 kg (VA, Standard, Valve Model 3280) LED Display 1.) On the MFM: RGB LED conforming to NAMUR NE107 standard On the valve: RGB LED for displaying valve opening Proportional Valve (Electric) No-current valve nominal diameter 2…20 mm kVS value 0.5…7.8 m³/h Performance data Rated flow range (Q rated) 20…2500 lN/min (N2) Measurement range 1:50 2.) Maximum working pressure (pressure above atmospheric pressure) 22 bar (for MFC, maximum working pressure depends on the effective valve diameter) Measurement accuracy ± 2% of measured value ± 0.5% of final value (after 15 minutes of heating time) Repeatability ± 0.5% of final value Settling time (MFC)/Response time (MFM) (t95%) <5 s Electrical parameters Power consumption Maximum 2 W (as MFM) Maximum 10.5 W (as MFC) 3.) Environmental and installation protection rating IP54 (type 3280 valve) and IP50 (type 3285 valve) 1.) Accurate LED color description: see instruction manual 2.) In a vertical installation position with flow from top to bottom, the measurement range is up to 1:10. 3.) Explanation during engine valve movement. Valve holding power <1 W.

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