Kobold RFS Operating Instructions Manual

Kobold RFS Operating Instructions Manual

Level switch for liquids
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Operating Instructions
for
Level Switch for Liquids
Model: RFS

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Summary of Contents for Kobold RFS

  • Page 1 Operating Instructions Level Switch for Liquids Model: RFS...
  • Page 2: Table Of Contents

    Dimensions ....................10     EU Declaration of Conformance ..............11     ATEX-Certificate ..................12     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 RFS K02/0118...
  • Page 3: Note

    RFS  Operating Instructions 4. Regulation Use Model RFS devices are used for when monitoring liquid levels. The device should only be used with liquids that are compatible with the unit’s materials of construction. Level control is often accomplished with at least two level switches - one acting to sense the minimum level and the other for maximum level detection.
  • Page 4: Operating Principle

    5. Operating Principle The Level Switch RFS is designed for economical control of liquids in vessels. The following three versions are available: A device with plug connection and two devices with aluminium housing connection of which one is an ATEX-version for the use in environment with gas explosion hazards.
  • Page 5: Mechanical Connection

    In any case the marked hexagon surface must always be mounted vertically. Mounting position Depending on the mounting position of the device, the contact function (N/O or N/C contact) of the level switch will be defined. Mounted Mounted as as N/C N/O contact RFS K02/0118 page 5...
  • Page 6: Electrical Connection

     The level switch has a protective insulation; a separate protection wiring for the standard version is not necessary.  For the RFS version for ATEX applications, the connection of the potential terminal is mandatory.  An additional intrinsically safe relay is required in environment with gas explosion hazards (KFA…and respectively KFD).
  • Page 7 There are three connection terminals of which one terminal is clearly marked as a ground terminal. The two other terminals are connected in the same way as the standard devices RFS-1200N4 and RFS-1201N4 respectively. After the connection of any other from your designated external instruments to the limit contact, the device is ready for operation.
  • Page 8: Technical Information

    9. Technical Information Medium temperature: - 40...+120 °C Ambient temperature: -20...+80 °C (RFS-1200 N4 and RFS-1201 N4) -20...+ 60 °C (RFS-12Ex N4) Operating pressure: max. 5 bar mounting position: horizontal Materials • Housing / plug: plastic with RFS-1200 N4 aluminium with RFS-1201 N4 and RFS-12Ex N4 •...
  • Page 9: Order Codes

    10. Order Codes Example: RFS-1200 N4 Model Description Standard version with RFS-1200 N4 plug connection Standard version with housing connection RFS-1201 N4 (aluminium) ATEX version for use in environments with explosion RFS-12Ex N4* hazards *an additional relay is required for the use...
  • Page 10: Dimensions

    11. Dimensions RFS-1201 N4, RFS-12Ex N4 17.5 19.5 1/2 NPT RFS-1200 N4 17.5 19.5 1/2 NPT page 10 RFS K02/0118...
  • Page 11: Eu Declaration Of Conformance

    Certificazione per esame di tipo CE Marcatura LOM06ATEX2054X II 1 GD Ex ia IIC T6 Ga -20≤Ta≤+60ºC Fabricado en KOBOLD MESURA SLU Avda. Conflent 68 nave 15 08915 BADALONA (Spain Made in: Hergestellt in: Fabriqué dans: Fabbricato in: Organismo notificado LOM 0163 Número notificación...
  • Page 12: Atex-Certificate

    13. ATEX-Certificate page 12 RFS K02/0118...
  • Page 13 RFS K02/0118 page 13...
  • Page 14 14 RFS K02/0118...
  • Page 15 RFS K02/0118 page 15...
  • Page 16 16 RFS K02/0118...
  • Page 17 RFS K02/0118 page 17...
  • Page 18 18 RFS K02/0118...

This manual is also suitable for:

Rfs-1201 n4Rfs-12ex n4Rfs-1200 n4

Table of Contents