Kobold NBK-04-ATEX Operating Instructions Manual
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Kobold NBK-04-ATEX Operating Instructions Manual

Over-head level indicator
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Operating Instructions
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Over-Head Level Indicator
Model: NBK-04-ATEX

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Summary of Contents for Kobold NBK-04-ATEX

  • Page 1 Operating Instructions Over-Head Level Indicator Model: NBK-04-ATEX...

  • Page 2: Table Of Contents

    EU Declaration of Conformance (ATEX) ............. 21     Certificates ....................22     18.1 NBK EXAM ..................22     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 NBK-04 ATEX K02/0523...

  • Page 3: Note

    Please read these operating instructions before unpacking and putting the unit into operation. Follow the instructions precisely as described herein. The instruction manuals on our website www.kobold.com are always for currently manufactured version of our products. Due to technical changes, the instruction manuals available online may not always correspond to the product version you have purchased.

  • Page 4: Instrument Inspection

    NBK-04 ATEX 3. Instrument Inspection Instruments are inspected before shipping and sent out in perfect condition. Should damage to a device be visible, we recommend a thorough inspection of the delivery packaging. In case of damage, please inform your parcel service / forwarding agent immediately, since they are responsible for damages during transit.

  • Page 5: Electrical Limit Switches (Option)

    NBK-04 ATEX Electrical limit switches (option) The optional electrical limit switches serve to signal a preset level. 4.3 Reed Contact Resistance Chain (ATEX: options ...2/ ...E/ ...R/ ...B/ ...4/ ...L/ ...K/ ...N) The optional reed contact resistance chain (model: MM..., see separate EC-Type Examination Certificate LOM14ATEX2075X) converts the liquid level to a resistance value.

  • Page 6: Reed Contact Resistance Chain

    NBK-04 ATEX 5. Operating Principle Kobold Over-Head Level Indicators are used for continuous measurement, indication and monitoring of liquid levels. A float in a dip pipe is connected with the magnet actuator inside the over-head tube via a connecting rod. The built-in magnet inside the magnet carrier triggers the mounted indication and other options (e.g.

  • Page 7: Mechanical Connection

    NBK-04 ATEX 6. Mechanical Connection Remove the cotter pin from bottom end of the dip pipe, next, remove the transport lock of the float. Fix the float with the magnet system towards top Final Measurement and make sure, there are no remains of packing material or other impurities inside the tube.
  • Page 8 NBK-04 ATEX Required size of the mounting tube of vessel side  NBK-04-tube Min.  of the mounting tube of the vessel side  76.1  88.9 x 2  60.3  76.1 x 2 page 8 NBK-04 ATEX K02/0523...
  • Page 9 NBK-04 ATEX Transmitter with reed contact resistance chain If present and not yet installed at the factory, fasten the transmitter to the bypass pipe with the tensioning straps and tighten it. The cable junction box is at the top. By default, the transmitter is mounted to the left of the standpipe.

  • Page 10: Electrical Connection

    NBK-04 ATEX 7. Electrical Connection Connection diagram  Ensure that the electrical supply lines are powerless.  To avoid faults caused by electrical fields from other circuits, the cables should not be installed together with other high voltage power lines. ...

  • Page 11: Safety Instructions (Atex)

    NBK-04 ATEX Safety Instructions (ATEX) 7.2.1 Area of validity Temperature class and/or surface temperature relates solely to a device operated at ambient temperature. On installation, the actual temperature class for process operation has to be determined. Only use certified cable glands and seals according to the ATEX directive. The use in zone 0 of heads made of aluminium should be restricted to locations where the risk of ignition due to mechanical impact is not possible.
  • Page 12 7.2.5 Maintenance and repairs The instrument does not require maintenance or servicing. Repairs must be only carried out by Kobold Mesura (manufacturer). 7.2.6 Storage Measuring instruments should be protected against humidity and dust. Storage temperature: -5…+55ºC.

  • Page 13: Ground Connection For Atex Variant

    NBK-04 ATEX Ground connection for ATEX variant The bypass must be included in the equipotential bonding system of the plant. This is done via the earthing terminal, which can be seen in the following drawing. The resistance to earth has to be of a value of <10 Ω: Potentialausgleich NBK-04 ATEX K02/0523 page 13...

  • Page 14: Commissioning

    The indicator does not otherwise require any maintenance. 11. Technical Information Operating instructions, data sheet, approvals and further information via the QR code on the device or via www.kobold.com page 14 NBK-04 ATEX K02/0523...

  • Page 15: Diagram Density / Length Of Measuring Tube

    NBK-04 ATEX 12. Diagram Density / Length of Measuring Tube* 12.1 NBK-04...8, diagram 8 NBK-04 ...8: Float: titanium Connecting rod: st. steel, 1.4571 Process connection: DIN flange PN 16, DN 50, 80, 100 ANSI flange, 2“, 3”, 4” Overhead and tank tube: Ø 60.3 mm, continuous Min.

  • Page 16: Nbk-04

    NBK-04 ATEX 12.2 NBK-04...6, diagram 6 NBK-04 ...6: Float: titanium Connecting rod: titanium Process connection: DIN EN 1092-1 flange, DN 50, 80, 100 ASME flange, 2“, 3”, 4” Overhead and tank tube: Ø 60.3 mm, continuous Min. medium density: 0.65 kg/dm at ML = 600 mm page 16 NBK-04 ATEX K02/0523...

  • Page 17: Nbk-04

    NBK-04 ATEX 12.3 NBK-04...4, diagram 4 NBK-04 ...4: Float: titanium Connecting rod: st. steel, 1.4571 Process connection: DIN EN 1092-1 flange, DN 65, 100 ASME flange, 2½“, 4” Overhead and tank tube: Ø 60.3 mm Tank tube: Ø 76.1 mm Min.

  • Page 18: Order Codes

    NBK-04 ATEX 13. Order Codes Operating instructions, data sheet, approvals and further information via the QR code on the device or via www.kobold.com 14. Dimensions Operating instructions, data sheet, approvals and further information via the QR code on the device or via www.kobold.com...

  • Page 19: Disposal

    NBK-04 ATEX 15. Disposal Note!  Avoid environmental damage caused by media-contaminated parts  Dispose of the device and packaging in an environmentally friendly manner  Comply with applicable national and international disposal regulations and environmental regulations. Batteries Batteries containing pollutants are marked with a sign consisting of a crossed-out garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that is decisive for the classification as containing pollutants: 1.

  • Page 20: Eu Declaration Of Conformance

    NBK-04 ATEX 16. EU Declaration of Conformance We, KOBOLD-Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Bypass level indicator model: NBK-04… to which this declaration relates is in conformity with the standards noted below: EN IEC 63000:2018...

  • Page 21: Eu Declaration Of Conformance (Atex)

    NBK-04 ATEX 17. EU Declaration of Conformance (ATEX) NBK-04 ATEX K02/0523 page 21...

  • Page 22: Certificates

    NBK-04 ATEX 18. Certificates 18.1 NBK EXAM page 22 NBK-04 ATEX K02/0523...
  • Page 23 NBK-04 ATEX NBK-04 ATEX K02/0523 page 23...
  • Page 24 NBK-04 ATEX page 24 NBK-04 ATEX K02/0523...
  • Page 25 NBK-04 ATEX NBK-04 ATEX K02/0523 page 25...
  • Page 26 NBK-04 ATEX page 26 NBK-04 ATEX K02/0523...

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Nbk-04

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