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Dual Seal – 100% leakage detection

Pressure-triggered safety valve for critical thermometer applications

Industrial processes often involve hazardous or explosive substances, requiring robust safety mechanisms to minimize risks. Over time, thermowells can develop cracks due to abrasion or corrosion, potentially allowing hazardous materials to escape during active processes or maintenance. The patented Dual Seal feature included in iTHERM ModuLine industrial thermometers provides an additional safety barrier in the event of thermowell failure or breakage.

Increased plant safety with the second process barrier

collage with 2 versions of Dual Seal ©Endress+Hauser

Dual Seal technology available for iTHERM ModuLine TM131 / TM151 / TM152

优势

  • No risk of hazardous leakages

  • Increased safety for maintenance personnel, plant and environment

  • Health monitoring & signal to PLC in case of activation

  • Additional health information from measurement device

  • Immediate sealing for containment of hazardous media

The Dual Seal mechanism detects a potential loss of thermowell integrity and immediately seals off the sensor insert, preventing the leakage of process medium into the terminal head, cabinet or environment. The temperature transmitter relays the message of the thermowell breakage to the process control system. This information is then used to bring the plant to a safe condition and prevent danger to people and the environment.

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特殊选型

FLEX产品选型 仪表技术性能 选型便捷程度
  • F
  • L
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Fundamental选型

完美胜任基本测量任务

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Lean选型

轻松应对关键工艺的测量挑战

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Extended选型

创新技术助力工艺流程优化

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满足严苛工况的特殊测量要求

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    • 手册
    Application note cover image

    Enhanced safety in polymer production

    • 手册

    iTHERM ModuLine TM131 with Dual Seal technology not only provides a second process barrier, but also signals when a fault is present, ensuring the safety of the operating personnel.