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Tunable diode lasers (TDLs) are rapidly replacing paramagnetic analyzers in many petrochemical unit operations. By providing fast, accurate measurements directly from within the process, TDL gas analyzers from METTLER TOLEDO maintain process safety.
This case study explains how one of China's largest petrochemical companies was struggling with paramagnetic analyzers for monitoring oxygen levels. Now, the company's replacing them with METTLER TOLEDO GPro® 500 tunable diode laser analyzers.
With high satisfaction in the GPro 500’s performance, the company has embarked on a program to install them in place of the paramagnetic oxygen analyzers in their vapor recovery units. TDLs operate in situ so sample treatment is not required. They are also largely immune to background gas cross interference.
GPro 500 TDL Oxygen Analyzer
- Dependable, industry-proven tunable diode laser technology
- Direct measurement in the gas stream is fast and reliable
- Response time of two seconds maintains process safety
- Simple installation thanks to probe design and single flange connection
- No sampling or conditioning equipment. Annual verification and periodic optics cleaning are the only maintenance
- Low nitrogen purging consumption means low operating costs
- Sensor diagnostics continually monitor optical path quality to determine when cleaning will be required
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