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8746 Mass Flow Controller & Flow Meter
Brand: Burkert Fluid Control Systems
The mass flow controller / meter Type 8746 for gases is intended for the use in a büS or CANopen network. The büS network technology is based on CAN physics and was developed by Bürkert especially for Industrial Ethernet or fieldbus communication in applications with multiple control loops.
In combination with the system control unit (SCU) Type ME2X, the CANopen based communication can be translated to the customer’s fieldbus.
The mass flow controller (MFC) / meter (MFM) can always be switched between büS and CANopen communication. Given that, Type 8746 can also be directly integrated into existing CANopen networks.
Type 8746 can be configured as MFM or MFC. Optional, four different gases can be calibrated. The thermal inline sensor is located directly in the main 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 8746 is especially designed for use in harsh environments due to a low sensitivity to contamination, high protection class and explosion-proof.
Features
- Nominal flow range from 20 IN/min to 2500 IN/min (re. nitrogen)
- High accuracy in measurement and repeat accuracy
- Electromagnetic and motor-driven valve actuator available
- Easy device exchange due to configuration memory
- Optional: ATEX II Cat. 3G/D or USP Class VI, FDA, EC 1935 conformity
Specifications
Seal Material
- EPDM
- FKM
Housing Material
- Die-cast Aluminum
Base Block
- Aluminium or Stainless Steel 1.4404/316L
Wetted Parts
- Sensor: Stainless Steel 1.4404/316L, Al2O3, PPS GF40, Epoxy Resin, Silicon, Silicon Nitride
Media
- Neutral, Pure Gasses
Medium Temperature
- -10° to 70° C (14° to 158° F)
Turndown Ratio
- 1:50
Approvals & Certifications
- ATEX
- IECEx
- cULus
- FDA
- USP
Electrical Connection
- M12 Plug, 5-Pin
- M12 Socket, 5-pin
- 2 x M8 socket, 4-pin
Environmental Protection
- Electromagnetic Proportional Valve: Protection Class IP65
- Electromagnetic Proportional Valve: Protection Class IP67
- Explosion-proof
- Motor-Driven Proportional Valve: Protection Class IP50
Flow Rate
- Electromagnetic & Motor-Driven Proportional Valve: Nominal Flow Range 20 to 2,500 LPM
- Electromagnetic Proportional Valve: 0.02 to 2.5 m³/hour (Kvs Value)
- Motor-Driven Propotional Valve: 0.5 to 7.8 m³/hour (Kvs Value)
Operating Pressure
- Max. 25 bar
Port Connection
- G 1/4"
- 1/4" NPT
- 1/2" NPT
- 3/4" NPT
- 3/8" NPT
- 1" NPT
- Surface Mounting
- Clamp Connection
Ambient Temperature
- -10° to 50° C (14° to 122° F)
Response Time
- Electromagnetic Proportional Valve (MFC) / (MFM): < 500 ms
- Motor-Driven Proportional Valve: < 5 seconds
Nominal Diameter
- 0.8 to 12 mm
Repeatability
- Electromagnetic Proportional Valve: ± 0.1 % FS
- Motor-Driven Proportional Valve: ± 0.5 % FS
Applications
- Harsh Environments
Communication
- büS/CANopen
- PROFIBUS DPV1
- Industrial Ethernet: EtherCAT®, EtherNet/IP, Modbus TCP
Mounting Position
- Horizontal
- Vertical
Operating Voltages
- 24 Vdc
Voltage Tolerance
- ± 10 %
- Harsh Environments
