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8713 Mass Flow Controller
Brand: Burkert Fluid Control Systems
Type 8713 controls the mass flow of gases that is relevant for most applications in process technologies. The measured value 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.
Due to the fact that the sensor is directly in contact with the gas a very fast response time of the MFC is reached. 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. Type 8713 can optionally be calibrated for two different gases, the user is able to switch between these two gases.
As control element a direct-acting proportional valve guarantees a high sensitivity and a good control characteristics of the MFC. This instrument communicates digitally with master devices, no further A/D conversions needed. The Mass Flow Communicator software can be used for parameterization and diagnosis.
Specifications
Accuracy
- ± 0.3% of Full Scale after 1 Minute Warm-Up Time
- ± 0.8% of Reading after 1 Minute Warm-Up Time
Ambient Temperature Range
- -10° to 50° C (14° to 122° F)
Approvals & Certifications
- CE
BSP Connection
- G 1/4" Female
Communication
- Digital
- RS-232
- RS-422
- RS-485 (Half-Duplex & Full Duplex)
- USB
Consumption
- Power Consumption: 3.5-11.5 W (Depending on Control Valve Used)
Electrical Connectors
- D-Sub 9-Pin Plug Connector
Electrical Contacts
- Normally Closed
- Normally Open
Enclosure, Body Material
- Aluminum
- Metal
- Stainless Steel
Environmental Protection
- Protection Class: IP40
Flow Rate
- Control Valve: 0.00006 to 0.32 m³/hour (Kvs Value)
- Nominal Flow Range: 0.01 to 80 LPM
Function
- Close-Tight
Indication
- LED Indication for Power, Limit & Error
Media
- Air
- Neutral Gasses
Mounting Position
- Horizontal
- Vertical
NPT Connection
- 1/4" NPT Female
Operating Pressure
- Maximum
Orifice Size
- Control Valve: 0.05 to 4 mm
Power Supply
- 24 Vdc
Principle of Operation
- Thermal, Calorimetric
Process Temperature
- -10° to 60° C (14° to 140° F) with Oxygen
- Gas: -10° to 70° C (14° to 158° F)
Relay Output
- One Relay-Output: 1 A at 25 V, 25 VA
Repeatability
- ± 0.1% of Full Scale
Response Time
- Settling Time (t95%): < 300 milliseconds
Seat / Seal Material
- Seal: EPDM
- Seal: FKM
Sensor Circuit
- Residual Ripple: < 2%
Tolerance
- Voltage: ± 10%
Turndown
- 1:50
