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    • Headquarters
      Christian Bürkert GmbH & Co. KG
      Christian-Bürkert-Straße 13 - 17
      74653 Ingelfingen
      Phone +49 7940 10 0
      Fax +49 7940 10 91204
      E-Mail vasb@ohexreg.pbz
      Website https://www.buerkert.de/
    • Office
      Bürkert GmbH und Co. KG
      Christian-Bürkert-Straße 13 - 17
      74653 Ingelfingen
      Phone +49 7940 10 0
      Fax +49 7940 10 91448
      E-Mail vasb@ohexreg.pbz
    • Office
      Sales Center Süd
      Christian-Bürkert-Straße 13 – 17
      74653 Ingelfingen
      Phone +49 7940 10 91111
      Fax +49 7940 10 91448
      E-Mail FP.Fhrq@ohrexreg.qr
    • Office
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      Rendsburger Straße 18
      30659 Hannover
      Phone +49 511 9 02 7650
      Fax +49 511 9 02 7660
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    • Office
      Technik Center Ingelfingen
      Christian-Bürkert-Straße 13 – 17
      74653 Ingelfingen
      Phone +49 7940 10 91110
      Fax +49 7940 10 91428
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      Phone +49 7940 10 91110
      Fax +49 7940 10 91428
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      Sales Office Berlin
      Volmerstraße 10
      12489 Berlin
      Phone +49 30 67 97170
      Fax +49 30 67 971766
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      Website https://www.burkert.com/
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      Holzener Straße 70
      58708 Menden
      Phone +49 2373 96 810
      Fax +49 2373 96 8150
      E-Mail vasb@ohexreg.pbz
      Website https://www.burkert.com/
    • Office
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      Am Flugplatz 27
      63329 Egelsbach
      Phone +49 6103 94 140
      Fax +49 6103 94 1466
      E-Mail vasb@ohexreg.pbz
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      Rendsburger Straße 18
      30659 Hannover
      Phone +49 511 9 02 760
      Fax +49 511 9 02 7666
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      Elsenheimerstraße 47
      80687 München
      Phone +49 89 82 92 280
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      Ulmer Str. 4
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      Bürkert Innovation Center
      Albert-Nestler-Str. 17
      76131 Karlsruhe
      Phone +49 7940 10 94101
      Fax +49 7940 10 91204
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      Keltenstraße 10
      74653 Ingelfingen-Criesbach
      Phone +49 7940 10 96510
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      CUT Membrane Technology GmbH
      Feldheider Str. 42
      D-40699 Erkrath
      Phone +49 2104 176320
      Fax +49 2104 1763222
      E-Mail svygengvba@ohexreg.pbz
      Website https://www.burkert.com/CUT
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      Schwarzer Precision GmbH & Co KG
      Am Lichtbogen 7
      D-45141 Essen
      Phone +49 201 316 970
      Fax +49 201 316 97 29
      E-Mail vasb@fpujnemre.pbz
      Website https://www.schwarzer.com/
    • Systemhaus
      Systemhaus Ingelfingen
      Keltenstraße 10
      74653 Ingelfingen-Criesbach
      Phone +49 7940 10 0
      Fax +49 7940 10 91204
      E-Mail vasb@ohexreg.pbz
      Website https://www.burkert.com/
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      Systemhaus Dortmund
      Holzener Straße 70
      58708 Menden
      Phone +49 7940 10 0
      Fax +49 7940 10 91204
      E-Mail vasb@ohexreg.pbz
      Website https://www.burkert.com/
    • Systemhaus
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      Christian-Bürkert-Straße 2
      01900 Großröhrsdorf
      Phone +49 7940 10 0
      Fax +49 7940 10 91204
      E-Mail vasb@ohexreg.pbz
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      Bürkert Werke GmbH & Co. KG
      Christian-Bürkert-Straße 13 - 17
      74653 Ingelfingen
      Phone +49 7940 10 0
      Fax +49 7940 10 91204
      E-Mail vasb@ohexreg.pbz
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      Keltenstraße 10
      74653 Ingelfingen-Criesbach
      Phone +49 7940 10 91613
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      Website https://www.burkert.com/
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      Bürkert Werke GmbH & Co. KG
      Schleifbachweg 40
      74613 Öhringen
      Phone +49 7941 92 990
      Fax +49 7941 92 9993150
      E-Mail vasb@ohexreg.pbz
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      Bürkert Werke GmbH & Co. KG
      Landauer Straße 24
      74582 Gerabronn
      Phone +49 7952 9609 92179
      Fax +49 7952 9609 92150
      E-Mail vasb@ohexreg.pbz
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bürkert
 

Compact flow rate controller with added value

The pneumatic conveying systems for the most varied bulk materials, such as those used in the pharmaceutical and food processing industries or in process engineering, are under constant pressure to become more cost-effective while also offering greater reliability and productivity. To ensure the consistent quality of conveyance and of the conveyed material as well as maximum system efficiency, it is essential to control the quantity of conveying air. This is necessary, for example, in order to adapt it to the respective conveyed material, to respond to changes in the process or to compensate for leakages.

Print

The compact flow rate controller from fluid control specialist Bürkert is a practical solution that is suitable for installation in new systems or retrofitting across virtually all industries.

Orifice and actuator combined

The flow rate controller comprises a continuous valve with a compact process controller on the upper side and two pressure transmitters. No separate flow meter is required. The pressure drop is measured using the control valve as a “measuring orifice”. The pressure difference can be used to calculate the nominal volume flow of the gas for a specified density and temperature. For this purpose, the flow characteristic of the control valve is stored in the process controller. The volume flow can then be controlled by the opening of the valve. As a result, all the necessary control technology is integrated in a single compact system — making installation and start-up considerably easier. What’s more, the flow rate controller impresses with its high repetitive accuracy of flow set-point values as well as its wide measurement and effective range. The latter is attributable to the fact that the control valve is used simultaneously as an adjustable orifice plate. Consequently, the pressure loss is much lower than in conventional solutions that employ a separate orifice plate. All things considered, this leads to a wider control range than with Laval nozzles, for example.

Automatic air leakage compensation

A unique feature of the flow rate controller is the automatic air leakage compensation, which can really help make pneumatic conveyance of bulk materials more efficient, for instance, in systems equipped with rotating batch metering units that are used to dose, feed or deliver bulk material. The rotating batch metering unit feeds the conveyed product into the volume flow, thereby causing a loss of conveying air, referred to as leakage air, as a side effect. The leakage air characteristic of every rotating batch metering unit can be saved in the controller. For every specified inlet pressure, this controller then “knows” how much additional air is required to compensate for the air loss in the system caused by the rotating batch metering unit. In precisely the same way, the possible partial loss of flow in bypass lines can also be compensated.

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  • English press release "Compact flow rate controller with added value"

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