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Kobold DRB Series Operating Instruction

Turbine-wheel flow meter
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Operating Instruction
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Turbine-wheel Flow Meter
Model: DRB-...

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Summary of Contents for Kobold DRB Series

  • Page 1 Operating Instruction Turbine-wheel Flow Meter Model: DRB-...

  • Page 2: Table Of Contents

    Order Details ....................14     Dimensions (mm) ..................15     EU Declaration of Conformance ..............18     Manufactured and sold by: Kobold Messring GmbH Nordring 22-24 D-65719 Hofheim Tel.: +49(0)6192-2990 Fax: +49(0)6192-23398 E-Mail: info.de@kobold.com Internet: www.kobold.com Page 2 DRB K04/0318...

  • Page 3: Note

    2. Note Please read these operating instructions before unpacking and putting the unit into operation. Follow the instructions precisely as described herein. The devices are only to be used, maintained and serviced by persons familiar with these operating instructions and with the prevailing regulation applying to safety and the prevention of accidents.

  • Page 4: Operating Principle

    5. Operating Principle The KOBOLD flow meter model DRB is used for measuring and monitoring liquids. The device works according the well-known paddle wheel principle. The four vane paddle wheel is retained radially in a high quality sapphire bearing. The sensor is supplied ready-to-install with pipe fittings or with weld-on sleeves.
  • Page 5 6.3. Inlet and outlet path straight piping requirements 2 x 90°- elbow 3 - dimensional Control valve 40 x D 5 x D 50 x D 5 x D 2 x 90°- elbow 90°- elbow or T - piece 25 x D 5 x D 20 x D 5 x D...
  • Page 6 Version with weld-on mounting adapter Weld the mounting adapter in the piping according to the sketch given below. ± Adapter Nominal Size DN 25 Nominal diameter DN 40 DN 50 DN 80 Position and weld-in the mounting adapter according to the nominal diameter suitable marking.

  • Page 7: Electrical Connection

    7. Electrical connection 7.1. General Attention! Make sure that the power supply voltage corresponds with the voltage requirement of the flow meter.  Ensure that power supply is de-energized  Connect the power supply and the output signal to the plug-pins, as shown below.
  • Page 8 7.2. Output Electronics: Frequency output (..F300; ..F320, ..F340) n.c. Signal 7.3. Output Electronics: Analogue output (..L303, ..L342, ..L343, ..L442) 3-wire (..L303, ..L343) n.c. Signal 2-wire (..L342) n.c. n.c. Page 8 DRB K04/0318...
  • Page 9 2-wire, DIN-plug (..L442) n.c. 7.4. Compact Electronics: (..C30R, ..C30M, ..C34P, ..C34N) Instruction Manual-Supplement for Compact Electronics 7.5. Evaluation electronics: Pointer indication (..Z300, ..Z340) n.c. Signal Caution! If the current output is not needed, PIN 4 (signal out) shall be permanently connected to ground (GND) (short circuit). DRB K04/0318 Page 9...

  • Page 10: Commissioning - Evaluation Electronics

    7.6. ADI electronics Instruction Manual-Supplement for ADI-electronics 8. Commissioning – Evaluation Electronics 8.1. General The Measuring units factory are pre-set and are ready for use after electrical connections are made. 8.2. Adjustment – Compact electronics Instruction Manual-Supplement for Compact electronics with Frequency output 8.3.

  • Page 11: Technical Data

    10. Technical Data 10.1. Sensor data Measuring range: 50-30...50-750 L/min Water Measuring accuracy: ±3% of. f.s. Process temperature: max. 80 °C Ambient temperature: max. 80 °C Max. operating pressure: PN 16 / 20 °C Max. pressure loss: DRB-...05: 0.05 bar DRB-...10.
  • Page 12 Analogue output (plug-on display option) Power supply: 24 V ±20% Output: 0-20 mA or 4-20 mA, 2-wire or 3-wire Max. load: 500 Ω Electrical connection: plug connector M12x1 or DIN 43 650 Option: plug-on display (with plug connection DIN 43 650, 2-wire) Compact electronics Display: 3-segment LED...
  • Page 13 DRB-...Exxx (Counter elektronic) Display: LCD, 2 x 8 digit, illuminated total, part and flow quantities units selectable Analogue output: 0(4)...20 mA adjustable Load: max. 500 Ω Switching output: 2 relays, max. 250 V / 5 A /1000 VA Settings: via 4 buttons Functions: reset, MIN/MAX memory, flow monitor, monitoring for part and total quantity,...

  • Page 14: Order Details

    11. Order Details example: DRB-1105 G4 F300 With pipe fitting Evaluating electronics Frequency output ..F300= Frequency output, plug connector M12x1 Measuring range Flow rate Model Connection ..F320= Frequency divider 1:2 plug connection M12x1 max. 3 m/s max. 10 m/s ..F340= Frequency divider 1:4, plug connector M12x1 app.

  • Page 15: Dimensions (Mm)

    12. Dimensions (mm) Model: DRB-...L3.. / DRB- F.. (with analogue output) M 12x1 Model: DRB-..L4.. (with analogue output and optional plug-on display) G 1/2, 1/2 NPT G 3/4, 3/4 NPT G 1, 1 NPT G 1 1/2, 1 1/2 NPT G 2, 2 NPT G 3, 3 NPT 100 106 75...
  • Page 16 Model: DRB-..C.. (with Compact electronics) G 1/2, 1/2 NPT G 3/4, 3/4 NPT G 1, 1 NPT G 1 1/2, 1 1/2 NPT G 2, 2 NPT G 3, 3 NPT 100 106 75 Model: DRB-..Z.. (with pointer indication) OBOLD Page 16 DRB K04/0318...
  • Page 17 Model: DRB-..K,..G.., ..E.. (with ADI evaluating electronic, counter or dosing electronic) G 1/2, 1/2 NPT G 3/4, 3/4 NPT G 1, 1 NPT G 1 1/2, 1 1/2 NPT G 2, 2 NPT G 3, 3 NPT 100 106 75 DRB K04/0318 Page 17...

  • Page 18: Eu Declaration Of Conformance

    13. EU Declaration of Conformance We, KOBOLD-Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Turbine-wheel flow meter Model: DRB -... to which this declaration relates is in conformity with the standards noted below: EN 61000-6-4:2011 Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission...

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