Kobold RFS Operating Instructions Manual
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Kobold RFS Operating Instructions Manual

Magnetic level switch
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Operating Instructions
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Magnetic level switch
RFS

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Summary of Contents for Kobold RFS

  • Page 1 Operating Instructions Magnetic level switch...

  • Page 2: Table Of Contents

    ATEX Certified .................... 17     Notes ......................17     Manufactured by: Kobold Mesura S.L.U Av. Conflent Nº68 Nave 15 08915 Badalona Tel.: +34 93 460 38 83 Fax: +34 93 460 38 72 E-Mail: info.es@kobold.com Internet: www.kobold.com Edition: May 2022...

  • Page 3: Note

     Operating instructions 4. Description Model RFS devices are used for monitoring liquid levels. The device should only be used with liquids that are compatible with the unit´s materials of construction. The standard version can be mounted in a wide range of installations while the ATEX version is to be mounted in classified installations category 1 requiring certification 1G Ex ia IIC T6, 1D Ex ia IIIC T85ºC Da.

  • Page 4: Operation

    Working principle is based on the magnetic field of a magnet that activates the reed contact. RFS have the magnet located inside the float, the float is balancing following the liquid level. When magnetic field of the magnet in the float reaches the reed contact or the micro switch located in the fixed part of the instrument, it switches and indicates the level of the tank.

  • Page 5: Mechanical Connection

    7. Mechanical Connection The Level Switch should be mounted so that the float can move freely over its entire path without hitting the wall, floor or roof of the container. Avoid fitting the switch where agitators or inlet valves could expose it to excessive turbulence. Make sure that the medium does not contain solids or ferrite particles, as they could collect on the float magnet and interfere with the switching operation.

  • Page 6: Electrical Connection

     When load is relay, electro valve or other element that requires some power it is absolutely necessary to protect the Reed contacts as follows depending on load and voltage types.  For the RFS version for ATEX applications, the connection of the potential terminal is mandatory. ...
  • Page 7 1 channel, 1 relay output, supply 230 V  Mod. KFD2-SR2-Ex2.W 2 channel, 2 relay output, supply 24 V  Mod. KFA6-SR2-Ex2.W 2 channel, 2 relay output, supply 230 V Pin assigment for RFS Level Switches RFS-12N4_11200 RFS-12N4_00000 RFS-12N4_01200 RFS-12N4_001__...

  • Page 8: Models

    9. Models RFS-12N4__1200 RFS-12G4__1200 RFS-12N4_00000 RFS-12G4_00000 RFS-12N4_00100 / RFS-12N4_001EX RFS-12G4_00100 / RFS-12G4_001EX Page 8 DT0649...

  • Page 9: Technical Data

    Technical data Note: Kobold Mesura makes every attempt to ensure the accuracy of these specifications, however, are subject to change without notice. SERIE RFS RFS-12N4__1200 | RFS-12G4__1200 Mounting Style: External Process connection: G½ or ½" NPT Stem: 1.4301 or 1.4404 Float: Ø17x47 - 1.4404...
  • Page 10 RFS-12______0100 Mounting Style: External Process connection: G½ or ½" NPT Stem: 1.4301 or 1.4404 Float: Ø17x47 - 1.4404 Medium max. Temp.: -40ºC...+120ºC Max.pressure: 10 bar Min. liquid density: >0.8g/cm³ Switching power max: Switching voltage max: 300Vac / 350Vdc Switching current max: DC 0.7 / AC 0.5A...

  • Page 11: Safety Instructions ( Atex )

    RFS…EX when used in explosive atmospheres. 2. General remarks. Working principle of RFS…EX is based on the magnetic field of a magnet that acti- vate reed contact and these instruments are used to control the level of a liquid of any zone.

  • Page 12: Installation In Atex Areas

    Installation in ATEX areas In classified areas, the level switch series RFS ATEX version, can be installed with the housing in zone 0, 1, 20, 21 (category 1G/D) or in a NON CLASSIFIED area. Wet part (probe) can be installed in zone 0, 20 (category 1).

  • Page 13: Electrical Connection In Atex Area

    Electrical connection in ATEX area Label description (ATEX) DT0649 Page 13...

  • Page 14: Eu Declaration Of Conformity (Atex)

    Certificazione per esame di tipo CE Marcatura LOM06ATEX2054X II 1 GD Ex ia IIC T6 / Ex iaD 20 T85 Ta :-20/+60ºC Fabricado en KOBOLD MESURA SLU Avda. Conflent 68 nave 15, 08915 Badalona (Spain) Made in: Hergesteltlt in: Fabriqué dans: Fabbricato in: Organismo notificado LOM 0163 Número notificación...

  • Page 15: Eu Declaration Of Conformity

    Normes harmonisées et documents normatifs appliqués Norme armonizzate e documenti normativi applicati: EN61010-1 :2010 EN61000-6-2 :2019 Fabricado en KOBOLD MESURA SLU Avda. Conflent 68 nave 15, 08915 Badalona (Spain) Made in: Hergesteltlt in: Fabriqué dans: Fabbricato in: Badalona Sept. 2017...

  • Page 16: Declaration Of Conformity

    DICHIARAZIONE DI CONFORMITÀ UK KOBOLD MESURA SLU Avda. Conflent, 68 nave 15 08915 Badalona (España) We Kobold Mesura S.L.U. declare under our sole responsibility that the product: Magnetic level switch RFS… To which this declaration relates is in conformity with the standards noted below: BS EN 61010-1:2010 Safety requirements for electrical equipment for measurement,controL, and laboratory use.

  • Page 17: Atex Certified

    ATEX Certified Notes DT0649 Page 17...
  • Page 18 Page 18 DT0649...
  • Page 19 DT0649 Page 19...
  • Page 20 Page 20 DT0649...
  • Page 21 DT0649 Page 21...
  • Page 22 Page 22 DT0649...
  • Page 23 DT0649 Page 23...
  • Page 24 KOBOLD MESURA S.L.U Av. Conflent Nº68 Nave 15 08915 Badalona Tel.: +34 93 460 38 83 Fax: +34 93 460 38 76 E-Mail: info.es@kobold.com www.kobold.com Technical data Subject to change without prior notice...

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