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Burkert-Type 8712 - Mass Flow Controller for Gases (MFC)

Burkert – Type 8712 Mass Flow Controller (MFC) for Gases

จุดเด่นของ Type 8712

  • Protection class IP 65
  • Very fast settling times
  • Optional: Fieldbus interface
  • High accuracy and repeatability
  • Nominal flow ranges from 0.010 l/min to 80 l/min
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Mass Flow Controller for Gases (MFC)

The mass flow controller (MFC) Type 8712 is suited for regulating the mass f low of gases over a big flow range. The thermal MEMS sensor is located directly in the gas stream and therefore reaches very fast response times. A direct-acting proportional valve from Bürkert guarantees a high sensitivity. The integrated PI controller ensures outstanding control characteristics of the MFC. Type 8712 can optionally be calibrated for two different gases; the user can switch between these two gases. As electrical interfaces both, analog standard signals and fieldbuses are available. The mass flow controller type 8712 fits for various applications, like e.g. burner controls, heat treatment, material coatings, bio reactors, fuel cell technology or test benches. This MFC is especially designed for use in harsh environments due to the high protection class.

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type 8712

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General Technical Data

Product properties
Material
Block Stainless steel
Body PC (Polycarbonate)
Seal FKM, EPDM (others on request)
Dimensions Detailed information can be found in chapter “3. Dimensions” on page 4.
Total weight 1200 g (valve internally)
LED display Indication for power, limit (with analogue signals) / communication (with fieldbus) and error

Performance data
Nominal flow range1.) (QNom) 0.01 mlN/min…80 lN/min (N2)
Detailed information can be found in chapter “5.2. Flow characteristic” on page 9.
Measuring range 1:50, higher measuring range on request
Max. operating pressure 10 bar (145 psi) (depending on control valve used)
Measuring accuracy ± 0.8 % o. R. ± 0.3 % F. S. (after 1 min. warm up time)
Repeatability ± 0.1 % o. R.
Response time (t95 %) < 300 ms

Electrical data
Operating voltage 24 V DC
Power consumption 3.5…14 W (depending on version)
Voltage tolerance ± 10 %
Residual ripple < 2 %
Electrical connection Socket M16, round, 8 pin and socket D-Sub HD15, 15 pin with PROFIBUS DP: Socket M12, 5 pin (for IP65) or D-Sub 9 pin with CANopen: Plug M12, 5 pin (for IP65) or D-Sub 9 pin

Medium data
Operating medium Neutral, or aggressive gases
Calibration medium Operating gas or air with conversion factor
Medium temperature – 10 °C…+ 70 °C
(- 10 °C…+ 60 °C for oxygen)

Process/Port connection & communication
Process connection NPT ¼, G ¼, screw-in fitting or sub-base, others on request
Fieldbus option PROFIBUS-DP, CANopen (D-Sub HD15 covered with sealed plate with fieldbus)
Digital outputs Two relay outputs
1. Limit (QNom almost reached)
2. Error (i.e. sensor fault)
Load capacity: max. 60 V, 1 A, 60 VA
Digital inputs Three
1. Start Autotune
2. Not assigned, Switch between gases when cal. for two gases
3. Not assigned
Digital (communication) interface RS232, Modbus RTU (via RS-Adapter), RS485, RS422 or USB (see “6.4. Ordering chart accessories” on page 10)
Analogue interfaces 4…20 mA, 0…20 mA, 0…10 V or 0…5 V
Input impedance > 20 kΩ (Voltage) resp. < 300 Ω (Current)
Max. load: 10 mA (Voltage output); max. load: 600 Ω (Current output)

Environment and installation
Installation position Horizontal or vertical
Ambient temperature – 10 °C…+ 50 °C
Degree of protection IP65

Accessories
Software-Tool Mass Flow Communicator

*For selecting thecorrect product please refer to the technical data, images and notes for proper use according to the data sheet, or contact Flu-Tech directly.

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  02-384-6060 (อัตโนมัติ)    [email protected]    บริษัท ฟลูเทค จำกัด Flu-tech    @flutech.co.th