Directly Measure Oxygen of Process Gas in 5 Seconds or Fewer. An SIL2 Certified Safe Measurement Solution

Introduction

In managing risk at the plant, measurement of oxygen concentration in process gases is, of course, a matter of necessity. Engineers typically use sampling systems for these measurements. However, samplers do not provide real-time values because it is necessary to extract the process gas, resulting in a time lag between measurement and phenomena. Unfortunately, this lag can hide sudden rises in concentrations of oxygen that may cause explosion. The reality is that sampling systems do not fully provide what is needed for managing risk. Resolving this problem is Yokogawa's safe oxygen measuring solution featuring the TDLS laser gas analyzer. The TDLS can measure process gas directly in 5 seconds or fewer, and can keep your initial and running costs down. And it's highly safe—it has certified conformance to the SIL2 safety level of the IEC61508 international safety standard. Yokogawa's solution has been used in a variety of measurement applications including oxygen concentration in oil refinery hydrocarbon vapors, oxygen concentration control with ethylene oxide reactors, and oxygen concentration in tank headspace gas. Not only is it safe, but it also helps increase manufacturing efficiency.

What is the TDLS Gas Analyzer?
The TDLS series is installed directly on the line. By irradiating process gas with a laser, it can measure not only O2, CO, CH4, NH3, and H2O, but also concentrations of various gases that have absorption in the near-infrared region. The laser is partitioned behind a glass window, and does not come into contact with the process gas. Therefore it delivers stable measurement under harsh conditions including high temperature, high pressure, corrosive and irritant gases, and dust. As the successor to the TDLS200, the TDLS8000 has increased functionality through smarter design, featuring a touch panel for greater ease of use.


Customer's Benefits

  • Delivers Reliable High Speed Analysis in Emergencies
  • Measures Accurately by Resisting Pressure, Temperature, Dust, and Other Impediments
  • Solid, Simple Design Increases Reliability

 

Solution and Benefits

  • Delivers Reliable High Speed Analysis in Emergencies
    By connecting to a safety control device that alerts a remote monitoring room or provides emergency shutdown, data measured at 5-second or shorter intervals can quickly respond to unforeseen events. The TDLS8000 is certified to conform to safety level SIL2 based on the international IEC61508 standard, and a single unit can be installed in an SIL2 safety loop. With 2 units, the TDLS8000 can be used in an SIL3 safety loop. Finally, in the worst case scenario, the explosion proof specifications of many of our models minimize damage.
     
  • Measures Accurately by Resisting Pressure, Temperature, Dust, and Other Impediments
    To enable analysis of process gas with sampling systems, it is necessary to adjust for pressure and temperature, and to eliminate dust and humidity as these can alter the nature of the gas itself, and degrade the reliability of the data. The TDLS Gas Analyzer does not transform process gases as a result of measurement. And in solutions with other instrumentation, you can perform data correction and output accurate numerical values in a variety of conditions.
     
  • Solid, Simple Design Increases Reliability
    Troublesome sampling systems are not required, and since the laser section doesn't come into contact with the process gas, there is no wear on parts, and virtually no running costs. There are several installation options to flexibly support most existing lines. Also, since it is partitioned off from the process line with a solid glass window, it maintains a high level of safety even if by chance you have to switch out measuring devices.

Wireless monitoring of waste water pH/ORP across a large-scale plant 


YOKOGAWA Solutions Meet Even More Needs

Yokogawa Electric offers a fast and reliable solution that directly measures process gas, setting a new standard of safe oxygen instrumentation. Many interfaces are available for output of measured data, enabling connection with a wide variety of instruments in systems. By combining products that conform to functional safety standards such as the ProSafe-RS "safety PLC" and EJX/YTA field instruments with CENTUM and other process control systems, we meet our customers' diverse needs by offering a comprehensive solution for efficient and safe operation of the entire plant.

產業別

相關產品&解決方案

SIS (SIL3認證) ProSafe-RS

ProSafe-RS是獲得德國認證機構(TÜV)認證的安全儀表系統,符合IEC 61508中指定的安全完整性等級(SIL)3。它已經在2400多個項目中安裝使用,涵蓋從大型集成製程自動化項目到獨立解決方案等多種項目類型。

TDLS8000在線氣體分析儀

橫河電機的新TDLS™8000功能強大,將諸多先進工業特性集成於一台耐用設備中。其平台設計適用於現場測量,無需進行樣品抽取和樣品處理。

分散控制系統(DCS)

橫河電機的分散控制系統(DCS)實現了工業製程自動化控制,並增強了業務性能。超過10,000家工廠採用橫河DCS實現他們的生產目標。

可調諧二極管激光光譜儀

可調諧二極管激光光譜儀 (TDLS) 是一款激光氣體分析儀,具備快速更新光學分析功能。

安全儀表系統(SIS)

安全儀表系統(SIS)保護人員、環境和資產。橫河的安全管理系統及相關安全解決方案被廣泛應用於緊急停機、消防、燃氣和燃燒器管理及HIPPS系統中。

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