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Temperature

  • Product Type: TSH200
  • Place of origin: UK
  • Model No: TSH200
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  • Brand Name: ABB
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Straight thermocouples for high temperature applications in industrial furnaces, combustion processes and melting processes. Communication via FF, PROFIBUS PA, HART, 4 ... 20 mA or direct sensor output. Approved ABB typical modular system:
    • with metal thermowell, for temperatures up to 1300 °C (2372 °F)
    • with ceramic thermowell, for temperatures up to 1800 °C (3272 °F)
    • with platinum sleeve, for temperatures up to 1650 °C (3002 °F)
    • suitable to main process connections
    • suitable to main process control systems
    • SensyTemp TSH250 temperature sensors are used in high temperature applications, especially in the glass industry
      for measuring temperature in glass melting. Because of the high temperatures and aggressive substances, ceramic
      thermowells with a platinum finish are used. Use of platinum in reducing atmospheres is not typically recommended.
      With the high temperatures found, e.g., in glass melting, coarse grains may form in the platinum, resulting in textural
      damage. This can quickly lead to cracks in components. Use of fine grain stabilization (also known as dispersion
      hardening) eliminates this risk. Finely dispersed oxide is incorporated in the metallic matrix of each individual
      crystallite. This ensures that the cold solidified state of the metal, with its high mechanical strength values, is
      maintained even at high temperatures approaching the melting point.
      For this reason, ABB uses a fine grain stabilized (FGS) platinum-rhodium alloy (FGS-PtRh 10 %).
      Since pure platinum is very soft, components made of pure platinum lose their strength and form stability at
      temperatures from 700 °C … 1000° C (1292 … 1832 °F). As a result, platinum is hardened by adding small amounts
      of rhodium to achieve higher form stability, increased chemical resistance, and longer service life. The mechanical,
      thermal and corrosive resistance increases as the percentage of rhodium is increased. On the other hand, rhodium
      has a high market price. A content of 10 % rhodium has shown itself to provide a good compromise between service
      life and purchase cost.

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