Zirconium-based in-situ oxygenanalysers s are used to measure oxygen levels and control combustionin furnaces and boilers. O2 gas analysers s are used to regulate the air-fuel ratio of burners in a controlled system to ensure an efficient process. These analysers s are ideal for monitoring and optimizing excess air in combustion. These measurement instruments can result insignificant fuel savings.
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Ideal for controlling combustion in boilers, incinerators, and furnaces, an oxygen analyser r helps reduce CO₂, SOx, and NOx emissions while saving you energy.
This gas analyser is specially designed for continuous measurement of oxygen concentration in flue gases and smoke from boilers in power plants, industrial furnaces plants (cremation, glassmaking, baking) and incinerators plants.
These zirconium oxide oxygen measurements are used to regulate the air-fuel ratio of burners in a controlled system to ensure optimum process efficiency in an industrial plant.
This instrument is ideally suited to controlling and optimizing excess air in combustion. As a result, it offers significant savings in fuel consumption.
The operation of the in situ oxygenanalyser r relies on the property of zirconium oxide, which conducts oxygen ions when heated.
This analyser measures the O₂ concentration by detecting the electromotive force generated by the difference in O₂ content between the air and the sample gas.
The zirconium oxygen analyser is suitable for combustion control in safety zones in explosive atmospheres. These analysers with the most demanding international standards. They have been certified CE, UL, CSA, and QAL1.
The in-situ O2 analyser with zirconia probe offers an accurate measurement of ± 1% on the measured oxygen concentration. It is also highly stable over time, thanks to its zirconia probe technology. This system is suitable for processes involving high temperatures of up to 1500°C, depending on the type chosen.
This probe is a highly reliable and robust instrument, which can be used in the most difficult conditions (dust, smoke, etc.). Its construction with resistant materials such as 316L stainless steel guarantees excellent resistance to damp and corrosive atmospheres.
The zirconium oxide analyser features a backlit LCD display for easy reading of results, even in the darkest conditions.
The transmitter also features an audible and visual alarm when preset thresholds are exceeded.
Service life
Easy to install
Wide temperature range
User-friendly operation
Operating principle and application
At the heart of this device, the in-situ zirconia sensor ensures fast and accurate oxygen measurement. Primarily designed to measure O2 in non-flammable gas mixtures, this analyser is particularly well-suited for critical environments such as industrial heat generation in refineries, petrochemical reactor furnaces, and other large combustion facilities.
Exceptional Performance
The user-configurable measurement scale ranges from 0 to 2% up to 50% vol. oxygen. Exceptional repeatability of ≤ ± 0.5% PE and linearity of ≤ ± 2% PE ensure consistent, accurate performance under varied operating conditions.
Reactivity and Advanced Communication
With a fast response time of 4 to 7 seconds to reach 90% of response, the analyser offers near-instantaneous measurement to adapt to rapidly changing conditions. Analog output of 4-20 mAdc or 0-1 Vdc offers flexibility in data collection. In addition, contact outputs include 6 points with SPST-NO contacts for crucial functions such as high/low limit alarm, maintenance in progress, purge in progress, calibration in progress, andanalyser faults.
Integrated Security and Advanced Options
Integrated safety functions, such as power cut-off in the event of thermocouple failure, add an extra layer of protection. The lockout function prevents potential operating errors. Advanced options include combustion efficiency display, cleaning, automatic calibration, selector valve and flowmeter, providing further customization to the specific needs of each application.
Installation and power supply
Theanalyser offers installation flexibility with panel-mount or conduit-mount options. The cable length between the controller and the sensor can be up to 100 meters, providing adaptability to various plant configurations. Power can be supplied at 100–120 VAC or 200–240 VAC, at a frequency of 50/60 Hz, ensuring global compatibility.
The table below helps you to select the right models and to combine the required modules according to process conditions.
| Process conditions | Module selection | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Application example | Temperature | Dust | Tube material | Unclogging | Tube type | Tube code (*) | Detector type | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Gas boiler | ≤ 600 °C | ≤ 0.1 g/Nm³ | SS316 | No | Standard convection tube | 631B562-0# | ZFK8 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Biomass, oil, coal boiler/ Incinerator | ≤ 600 °C | ≤ 5 g/Nm³ | Yes | Convection tube with cleaning device | 631B563-0# | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 25 g/Nm³ | Yes | Direct tube for very dusty gases (HP) | 631B673-0# | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Yes | Direct tube for HP with deflector | 631B677-0# | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 1000 °C | ≤ 0.2 g/Nm³ | SS310 | No | Double-flange convection tube (DB) for high-temperature gases (HT) | 631B685-0# | ZFKH | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 5 g/Nm³ | Yes | Convection tube DB HT with cleaning device | 631B684-0# | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 25 g/Nm³ | Yes | Direct tube for HT and HP | 631B675-0# | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Yes | Direct tube for HT and HP with deflector | 631B678-0# | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Incinerator / Furnace / Glass / Metallurgy | ≤ 1300 °C | ≤ 0.2 g/Nm³ | Kanthal | No | Convection tube for very high-temperature gases | 631B682-0# | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 5 g/Nm³ | Yes | Convection tube for high-temperature gases with cleaning function | 631B683-0# | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 800 °C | ≤ 0.5 g/Nm³ | SS310 | Yes | Ejector module ZTA | ZTA2 | ZFK8 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ≤ 1500 °C | SiC | Yes | Ejector module ZTA | ZTA1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Remarks | (*) The last digit of the tube code corresponds to the tube insertion length, as shown below: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| "1" = 300 mm | "2" = 500 mm | "3" = 750 mm | "4" = 1000 mm | "Z" = specific length -> consult Fuji | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- In case of very humid gas, keep the flange at a sufficient temperature to prevent condensation
- In case of very corrosive gas, consult Fuji for the materials to be used
- If the gas flow is less than 5 m/s, use an ejector module instead of a convection tube.
We help you configure your oxygen measurement platform for :
With the data from this questionnaire, our engineers will select the best combination for reliable and accurate oxygen analysis. Please do not hesitate to send us, in writing or in the form of a diagram, on the last page of this questionnaire or as an attachment, any additional information that would enable us to understand the specifics of your process, and thus best adapt the configuration of your O2 analysis.
QuestionnaireDownload the questionnaire so that we can suggest the best solution for your application!