Zirconia Oxygen Sensors for Boiler Applications

Maintaining the correct air-to-fuel ratio is essential for achieving efficient combustion in industrial boiler systems. Too little oxygen can result in incomplete combustion and increased emissions, while too much excess air reduces thermal efficiency and increases fuel consumption.

In this video, discover how SST Sensing’s zirconia oxygen sensors help optimise combustion efficiency in coal, oil, natural gas, and biomass boilers by continuously monitoring oxygen levels within the flue gas. Using advanced zirconium dioxide (zirconia) sensing technology, these sensors provide accurate, real-time oxygen measurement, enabling closed-loop combustion control that improves boiler performance while reducing operating costs and emissions.

Designed for demanding industrial environments, SST’s zirconia oxygen sensors feature non-depleting sensing technology, require no reference gas, and can be calibrated using fresh air or a known gas mixture. Available as standalone sensors or with integrated electronics, they can be easily incorporated into boiler control systems to provide continuous oxygen monitoring and precise combustion control.

Typical applications include:

  • Industrial steam boilers
  • Biomass combustion systems
  • Oil-fired heating systems
  • Industrial furnaces
  • Process heating equipment
  • Thermal power generation
  • Combustion control systems

Whether improving fuel efficiency, reducing carbon emissions, or maintaining optimum combustion conditions, SST Sensing’s zirconia oxygen sensors provide a robust, long-life solution for industrial boiler applications.

Frequently Asked Questions

Why is oxygen measurement important in boiler combustion?
Monitoring oxygen levels in flue gas allows the boiler control system to maintain the optimum air-to-fuel ratio. This improves combustion efficiency, reduces fuel consumption, lowers harmful emissions, and helps maximise overall boiler performance.

Why are zirconia oxygen sensors used in industrial boilers?
Zirconia oxygen sensors provide fast, accurate oxygen measurement in high-temperature combustion environments. Their non-depleting sensing technology, long operational life, simple calibration, and ability to withstand harsh industrial conditions make them ideal for continuous flue gas oxygen monitoring.