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8710 Mass Flow Controller
Brand: Burkert Fluid Control Systems
Type 8710 controls the mass flow of gases through a sensor element which is not in direct contact with the gas itself. The measured value provided by the sensor will be compared in the digital control electronics with the predefined set point according to the signal; if a control difference is present, the control value output to the proportional valve will be modified using a PI control algorithm.
In this way, the mass flow can be maintained at a fixed value or a predefined profile can be followed, regardless of pressure variations or other changes in the system. The control element, a proportional valve working at low friction, guarantees a high sensitivity and a excellent control characteristics of the unit. The Mass Flow Communicator software can be used for parameterization and diagnosis.
Specifications
Accuracy
- ± 0.3% of Full Scale after 30 minutes Warm-Up Time
- ± 1.5% of Reading after 30 minutes Warm-Up Time
Ambient Temperature Range
- -10° to 50° C (14° to 122° F)
Applications
- Environmental Technology
- Gas Dosing
- Gas Production Processes
- Heat Treatment
- Material Coatings
- Melting Treatment
BSP Connection
- G 1/4" Female
Communication
- DeviceNet Bus
- Digital
- Fieldbus, CANopen
- Modbus RTU
- Profibus DP
- RS-232
- RS-422
- RS-485
- USB
Consumption
- Power Consumption: Maximum
Electrical Connectors
- D-Sub 15-Pin Connector
- PROFIBUS-DP, DeviceNet & CANopen: Socket 5-Pin M12 Socket
Electrical Contacts
- Normally Closed
- Normally Open
Enclosure, Body Material
- Metal
- Plastic
- Polycarbonate
- Stainless Steel
Environmental Protection
- Protection Class: IP40
Flow Rate
- Control Valve: 0.00006 to 0.09 m³/hour (Kvs Value)
- Full Scale Ranges: 0.005 to 15 LPM
Function
- Close-Tight
Indication
- LED Indication for Power, Limit (with Analog Signals) Communication (with Fieldbus) & Error
Input Impedance
- 20 KiloOhms (Voltage)
Input Signal
- 0-10 V
- 0-20 mA
- 0-5 V
- 4-20 mA
Media
- Air
- Gas
- Neutral Gasses
Mounting Position
- Horizontal
- Vertical
NPT Connection
- 1/4" NPT Female
Operating Pressure
- Maximum
Orifice Size
- Control Valve: 0.05 to 2 mm
Output
- 0-10 V
- 0-20 mA
- 0-5 V
- 4-20 mA
- Maximum
Output Load
- Maximum
Power Supply
- 24 Vdc
Process Temperature
- -10° to 60° C (14° to 140° F) for Oxygen
- -10° to 70° C (14° to 158° F)
Ratio
- Control Range 1:50
Relay Output
- One Relay-Output: 1 A at 25 V, 25 VA
Repeatability
- ± 0.1% of Full Scale
Response Time
- Settling Time: < 3 seconds
Seat / Seal Material
- Seal: EPDM
- Seal: FFKM
- Seal: FKM
Sensor Circuit
- Residual Ripple: < 2%
Tolerance
- Voltage: ± 10%
