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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 สามารถใช้ได้ร่วมกับ
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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 |
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| 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 |
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| 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 |
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| Installation position | Horizontal or vertical |
| Ambient temperature | – 10 °C…+ 50 °C |
| Degree of protection | IP65 |
Accessories |
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| 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.
สอบถามข้อมูลเพิ่มเติม ติดต่อเรา :
02-384-6060 (อัตโนมัติ) [email protected] บริษัท ฟลูเทค จำกัด Flu-tech @flutech.co.th
