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Operating Instructions
for
Temperature Sensor
Model: TWL
Ignition Protection Ex ia
Page 1
DT0390

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Summary of Contents for Kobold TWL

  • Page 1 Operating Instructions Temperature Sensor Model: TWL Ignition Protection Ex ia Page 1 DT0390...
  • Page 2: Table Of Contents

      ATEX-Certificates ..................18     Note ......................23     Manufactured by: Kobold Mesura S.L.U Avda. Conflent 68 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 Edition: may 2022...
  • Page 3: Note

    The standard delivery includes:  Device model: TWL 4. Regulation Use The temperature sensors of series TWL are suitable for all applications where processes involving fluids, solid bodies or materials, or gases, require temperature recording and measurement. Our temperature sensors are suitable for use in the following industrial areas: chemicals, petrochemicals, water, feed, food, sanitary, etc.
  • Page 4: Operating Principle

    5. Operating Principle Resistance thermometers work by using the continuous change of resistance of metals subject to temperature rising and decreasing. The most common resistance material used is platinum, as it is very stable and has very good repeatability. The temperature coefficient of platinum is positive, so its resistance increases as the temperature rises.
  • Page 5 Sensor wiring diagram without head 2 wire 3 wire 4 wire DT0390 page 5...
  • Page 6 Transmitter wiring diagram page 6 DT0390...
  • Page 7: Head Model D Wiring Diagram

    6.1 Head model D wiring diagram With transmitter 5333D With transmitter 5337D 6.2 Head model R wiring diagram With transmitter 5333D With transmitter 5337D Note: For electrical connection of transmitter please refer to their separate manual. DT0390 page 7...
  • Page 8: Use In Hazardous Areas

    This measuring principle acts to check and measure the temperature also in Ex areas. TWL devices can be with a standard 4 to 20 mA signal transmitter, protocol Hart, Profibus/Fieldbus or with direct access to the sensor. They are appropriate for use in Group IIC and Categories 1G/D Atex atmospheres.
  • Page 9: Protection Against E.s.d. (Electrostatic Discharge)

    - Do not install the device near material airflows or near steam outlets 7.5 Maintenance and repairs The instrument does not require maintenance or servicing. Repairs must be only carried out by Kobold Mesura (manufacturer) 7.6 Storage Measuring instruments should be protected against humidity and dust.
  • Page 10: Description Of The Factory Label

    8. Description of the Factory Label page 10 DT0390...
  • Page 11: Installation In The Classified Area

    9. Installation in the classified area Examples of installation in explosion-proof areas conform to the protection type “intrinsically safe”: “Ex ia” Hazardous area Safe area DT0390 page 11...
  • Page 12: Technical Details

    ( other on request ) Operating pressure: Max. 30 bar (depending on model, see order details) Connection head: Form G with chain. Aluminium or polycarbonate head on model TWL-T Without head on models TWL-S, TWL-N, TWL-T, TWL-I and TWL-P Materials Sensor: Stainless steel 1.4404 (others on request)
  • Page 13 9…32 Vdc for transmitter with PROFIBUS /Fieldbus Note For programming of transmitter please refer to their separate programming manual. Sensors model TWL-SN and TWL-SA have not head transmitter, you must use remote transmitter. Transmitter 5333D Ambient temperature: -40...+85 ºC Power supply: 8...35 V...
  • Page 14 Max. Voltage 60 Vp Max. Load current 75 mA Note For programming of transmitter please refer to their separate programming manual. Sensors model model TWL-S, TWL-N, TWL-I and TWL-P have not head transmitter, you must use remote transmitter. page 14 DT0390...
  • Page 15: Trouble Shooting

    11. Trouble Shooting Faults Possible Causes Corrective actions No signal/line breakage Mechanical load too high or Replace probe or measuring over temperature. insert. Line breakage. Check wiring. Wrong measured values Sensor drift caused by over Replace probe or measuring temperature insert.
  • Page 16: Dismounting, Return And Disposal

    Residual media in dismounted instruments can result in a risk to persons, the environment and equipment. Take sufficient precautionary measures. All instruments delivered to KOBOLD must be free from any kind of hazardous substances (acids, bleaches, solutions, etc.). 12.2 Disposal Incorrect disposal may endanger the environment 13.
  • Page 17: Eu-Declaration Of Conformity

    LOM 08ATEX2015 X Ex II 1GD Ex ia IIC T4…T6 Ex iaD 20 IP65 T85ºC -20ºC ≤ Ta ≤ +60ºC Fabricado en KOBOLD MESURA SLU Avda. Conflent 68, nave 15 08915 BADALONA (Spain Made in: Hergesteltlt in: Fabriqué dans: Fabbricato in:...
  • Page 18: Atex-Certificates

    15. ATEX-Certificates page 18 DT0390...
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  • Page 23: Note

    16. Note DT0390 page 23...
  • Page 24 KOBOLD MESURA S.L.U Avda. Conflent 68 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 Page 24 DT0390...

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