SWAN
AMI Oxytrace – Trace Oxygen Monitoring for Steam-Water Cycles
In power plants and steam generation systems, even very low levels of dissolved oxygen can lead to corrosion and long-term damage to critical equipment.
The SWAN AMI Oxytrace analyzer provides high-sensitivity online measurement of dissolved oxygen at trace levels, enabling early detection of oxygen ingress and ensuring stable control of the steam-water cycle.
With continuous monitoring, you can protect boilers, turbines, and condensate systems from oxygen-related corrosion.
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High-sensitivity oxygen measurement for low-level detection
The AMI Oxytrace is designed to measure very low concentrations of dissolved oxygen, typically in the ppb range.
The analyzer uses an electrochemical sensor optimized for trace measurement, combined with stable sample handling and temperature compensation.
This enables:
- reliable detection of oxygen ingress
- fast response to changes in oxygen levels
- stable long-term measurements in critical applications
Accurate trace oxygen monitoring is essential for maintaining oxygen-free conditions in the water-steam cycle.
Part of a Steam & Water Analysis System (SWAS)
This analyzer is typically installed as part of a Steam & Water Analysis System (SWAS), where samples from the steam-water cycle are conditioned and distributed to online analyzers.
SWAS systems allow continuous monitoring of key water chemistry parameters such as conductivity, silica, oxygen, and sodium to protect boilers and turbines from corrosion and deposits.
Why oxygen monitoring matters for corrosion control
Dissolved oxygen is one of the main causes of corrosion in boilers and steam systems.
Even small concentrations can lead to:
- pitting corrosion in pipes and components
- reduced lifetime of boilers and heat exchangers
- increased maintenance costs
- risk of unplanned downtime
Continuous trace oxygen monitoring allows you to detect oxygen ingress early and maintain protective operating conditions.
Key features supporting reliable oxygen monitoring
- Continuous online measurement of trace dissolved oxygen
- High sensitivity detection in the ppb range
- Electrochemical sensor optimized for low-level measurement
- Fast response to changes in oxygen concentration
- Stable measurement with temperature compensation
- Low maintenance sensor design
- Industrial communication interfaces for control systems
These features ensure reliable monitoring of oxygen levels in critical water-steam cycle applications.
Typical monitoring points in power plants
Trace oxygen analyzers are installed at key points where oxygen ingress must be detected early.
Typical monitoring points include:
- Boiler feedwater
- Condensate systems
- Deaerator outlet
- After condensers
- Steam-water cycle return lines
Monitoring these locations allows operators to identify air in-leakage or insufficient deaeration before corrosion occurs.
Benefits for your plant operation
With reliable oxygen monitoring you gain:
- Early detection of oxygen ingress
- Improved protection against corrosion
- Stable operation of boilers and condensate systems
- Reduced maintenance and repair costs
- Continuous data for water chemistry control
These benefits support safe, efficient, and long-term operation of power generation systems.
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