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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.
Specifications
Accuracy
- Electromagnetic Proportional Valve: ± 0.3 % V.E after 15 minutes Warm-Up Time
- Electromagnetic Proportional Valve: ± 1.5 % V.M after 15 minutes Warm-Up Time
- Motor-Driven Proportional Valve: ± 2 % V.E after 15 minutes Warm-Up Time
Ambient Temperature Range
- -10° to 50° C (14° to 122° F)
Applications
- Harsh Environments
Approvals & Certifications
- ATEX II 3 G Ex NA IIC T° Gc x & II 3D Ex Tc IIIC T °C Dc X
BSP Connection
- G 1”
- G 1/2”
- G 1/4”
- G 3/4”
- G 3/8”
Communication
- CAN Bus
- Digital
- Ethernet
- FOUNDATION Fieldbus
- USB
Consumption
- Electromagnetic & Motor-Driven Proportional Valve: Power Consumption, Max.
- Electromagnetic Proportional Valve: Power Consumption 10.5 to 29.5 W
- Motor-Driven Proportional Valve: Max.
Electrical Connectors
- 5-Pin Connector
- M12 Plug
Electrical Contacts
- Electromagnetic Proportional Valve: Normally Closed
Enclosure Finish
- Aluminum Die Casting (Coated)
Enclosure, Body Material
- Aluminum
- Stainless Steel
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 0 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)
Indication
- Device Status with Electromagnetic & Motor-Driven Proportional Valve: RGB-LED based on NAMUR NE107
Media
- Air
- Neutral Gasses
Mounting Position
- Horizontal
- Vertical
NPT Connection
- 1” NPT
- 1/2” NPT
- 1/4” NPT
- 3/4” NPT
- 3/8” NPT
Operating Pressure
- Electromagnetic Proportional Valve, Max.
- Motor-Driven Proportional Valve, Max.
Operating Voltages
- 24 Vdc
Orifice Size
- Electromagnetic Proportional Valve: 0.8 to 12 mm
- Motor-Driven Propotional Valve: 2 to 20 mm
Process Temperature
- -10° to 60° C (14° to 140° F) with Oxygen
- -10° to 70° C (14° to 158° F)
Repeatability
- Electromagnetic Proportional Valve: ± 0.1 % V.E
- Motor-Driven Proportional Valve: ± 0.5 % V.E
Response Time
- Electromagnetic Proportional Valve (MFC) / (MFM): < 500 milliseconds
- Motor-Driven Proportional Valve: < 5 seconds
Seat / Seal Material
- Seal: EPDM
- Seal: FKM
Sensor Circuit
- Residual Ripple: ± 2 %
Sensor, Probe Style
- InLine
System Requirements
- MS-Windows®
Tolerance
- Voltage: ± 10 %
Turndown
- Electromagnetic & Motor-Driven Proportional Valve: 50: 1
- Harsh Environments