Kobold VKG Operating Instructions Manual
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Kobold VKG Operating Instructions Manual

Viscosity compensated flow meter and monitor
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Operating Instruction
for
Viscosity Compensated
Flow Meter and Monitor
Model: VKG

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Summary of Contents for Kobold VKG

  • Page 1 Operating Instruction Viscosity Compensated Flow Meter and Monitor Model: VKG...

  • Page 2: Table Of Contents

      Recommended Spare Parts ................ 19     Dimensions ....................20     EU Declaration of Conformance (VKG) ............22     UK Declaration of Conformity (VKG) ............23     EU Declaration of Conformance (Reed contact 41R57**) ......24  ...

  • Page 3: Note

     Viscosity Compensated Flow Meter and Monitor model: VKG 4. Regulated Use Model VKG instruments are used for the measurement and monitoring of viscous liquid flows (max. 760 mm /s). Only clean and homogeneous media may be measured, which do not affect the materials used in the instrument casing.

  • Page 4: Operating Principle

    The actual flow may be read locally off the instrument. The top of the float indicates directly the flow rate in litres per minute on the scale. Limit Value Contacts (only for model VKG- 2.. and VKG-3..) For the monitoring of the flow rate, the instruments may be fitted with one or two adjustable limit value contacts.

  • Page 5: Mechanical Connection

     If possible, check directly after mechanical installation that the connection thread to pipe is fully sealed (see section commissioning) Attention! Please note that when installed in open spaces freezing of the medium can lead to breakage of the glass tube. VKG K09/0322 Page 5...

  • Page 6: Electrical Connection

    7. Electrical Connection (Only for Models VKG-2.. and VKG-3..)  Make sure that the supply wires are de-energized.  Loosen the holding screw of the plug cap and remove the cap from the plug.  Connect the power cable to the plug cap in accordance with the connection diagram below.

  • Page 7: Use In Hazardous Area

    8. Use in hazardous area 8.1. Statement an apparatus not containing an own potential ignition source VKG K09/0322 Page 7...
  • Page 8 Page 8 VKG K09/0322...

  • Page 9: Atex Reed Contact 41R57

    To ensure the function and for your own safety, please read the enclosed operating instructions carefully before you begin the installation. If you have any questions, please contact the KOBOLD Messring GmbH, Hofheim. It applies with the original operating instructions.
  • Page 10 60 – 65 with marking 202.287 70 – 75 with marking 202.288 Change-over 60 – 65 change-over contact 202.290 Change-over 2.3 Temperature class The reed switch is suitable for temperature class T4 / T125 ° C. Page 10 VKG K09/0322...
  • Page 11 The intrinsically safe connection - including the reed switches - must be made via approved / tested evaluation devices, which may need to be equipped with suitable zener barriers or switching amplifiers. VKG K09/0322 Page 11...
  • Page 12 The certificates must be taken into account, including the special conditions specified therein. r) Resistant parts of the product (e.g. due to frost or corrosion) must not be forcibly loosened in the presence of an explosive atmosphere. Page 12 VKG K09/0322...
  • Page 13 The products must be regularly maintained and cleaned in the Ex area. The intervals are set by the operator according to the environmental demands on site. VKG K09/0322 Page 13...
  • Page 14 - even before the product is put into operation for the first time. A reed switch that has already been operated in non-intrinsically safe circuits may no longer be used in intrinsically safe circuits later on. Page 14 VKG K09/0322...

  • Page 15: Commissioning

    (The permissible maximum operating pressure must not be exceeded). Viscosity range The instrument scale is suitable for a viscosity range from 1 to 760 mm /s. Within this range there is no necessity for recalibration. VKG K09/0322 Page 15...

  • Page 16: Maintenance

    10. Maintenance For measured media without contamination, the VKG instruments are almost maintenance free. Where contamination or calcium or algae deposits are found on the internal parts, the instrument should be regularly cleaned. After removal of the upper four grub screws, the threaded connection may be taken out of the instrument.
  • Page 17 240 V / 0,42 A / 100 W, 100 V / 1 A / 100 W Contacts with VKG-2..., VKG-3..., VKG-4…, use in hazardous areas Mechanics: The apparatus can be used as follows in explosive atmospheres in accordance with the applicable erection regulations on machines, devices and plants, such as e.g.

  • Page 18: Ordering Codes

    5...80 VKG-2111... VKG-2211..R25=G 1 ..N25=1 NPT (model 41R57U) *The pressure loss is based on water. Viscosity-compensated flow meters and switches with 2 contacts model: VKG-3… (Example: VKG-3103 R15) Measuring Pressure loss P (bar) Brass Stainless Contact Connection range...

  • Page 19: Recommended Spare Parts

    Viscosity-compensated flow meters and switches with side indicator model: VKG-4… (Example: VKG-4103 R15) Measuring Pressure loss P (bar) Brass Stainless Contact Connection Option range steel Special at rated flow* l/min. oil connection min. max. 0.1...0.45 0.06 VKG-4101... VKG-4201..R0...=1 N/O contact ..R08= G 1/4...

  • Page 20: Dimensions

    14. Dimensions Model VKG-1..., VKG-2..., VKG-3... Model VKG-4... Weight (kg) VKG-1.. Model Standard Special [mm] [mm] connection connection VKG-..01 VKG-..02 VKG-..03 VKG-..04 VKG-..05 VKG-..06 VKG-..07 VKG-..08 VKG-..09 VKG-..10 VKG-..11 Page 20 VKG K09/0322...
  • Page 21 Weight (kg) VKG-4.. Model Standard Special [mm] [mm] connection connection VKG-..01 46x46 VKG-..02 46x46 VKG-..03 46x46 VKG-..04 46x46 VKG-..05 46x46 VKG-..06 46x46 VKG-..07 46x46 VKG-..08 46x46 VKG-..09 46x46 VKG-..10 46x46 VKG-..11 46x46 Connection female thread Option special connection Model L [mm]...

  • Page 22: Eu Declaration Of Conformance (Vkg)

    15. EU Declaration of Conformance (VKG) We, KOBOLD-Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Flowmeter and switch Model: VKG-... to which this declaration relates is in conformity with the standards noted below: EN 61010-1:2011 Safety requirements for electrical equipment for measurement, control and...

  • Page 23: Declaration Of Conformity (Vkg)

    ATEX not available in GB 16. UK Declaration of Conformity (VKG) We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Viscosity-Compensated Flowmeter and Switch model: VKG -... to which this declaration relates is in conformity with the standards noted below:...

  • Page 24: Eu Declaration Of Conformance (Reed Contact 41R57**)

    ATEX not available in GB 17. EU Declaration of Conformance (Reed contact 41R57**) Page 24 VKG K09/0322...

  • Page 25: Statement Of Conformity Reed Contact 41R57

    ATEX not available in GB 18. Statement of conformity reed contact 41R57** VKG K09/0322 Page 25...
  • Page 26 ATEX not available in GB Page 26 VKG K09/0322...
  • Page 27 ATEX not available in GB VKG K09/0322 Page 27...
  • Page 28 ATEX not available in GB Page 28 VKG K09/0322...

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