Zirconia in-situ oxygen analysers are used to measure oxygen levels and combustion control in furnaces and boilers. The gas analysers are used to control the air-to-fuel ratio of burners in a controlled system to ensure an efficient process. This O2 gas analyser is perfect for controlling and optimizing excess air in a combustion. This measurement instrument provides significant fuel savings.
Oxygen analyser: Optimization of combustion efficiency and compliance with environmental standards
Ideal for combustion control of boilers, incinerators and furnaces, an oxygen analyser helps reduce CO₂, SOx and NOx emissions while saving your energy.
This gas analyser is specially designed for continuous measurement of oxygen concentration in flue gas and smoke from boilers in power plants, industrial furnaces (crematoria, glassworks, firing) and incinerators.
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 control and optimize the excess air of a combustion. Therefore it allows an important saving on fuel consumption.
Operating principle of the In-situ Zirconia oxygen analysers
The operation of the in situ oxygen analyser is based on the property of zirconium oxide, also called zirconia, which conducts oxygen ions when heated.
This analyser obtains the O₂ concentration measurement by detecting the electromotive force generated by the difference in O₂ content between air and sample gas.
Applications of oxygen analysers with zirconium oxide probe
The ATEX type zirconia oxygen analyser is suitable for combustion monitoring in hazardous areas.
These analysers comply with the most demanding international standards. They are CE, FM, ATEX and QAL1 certified.
O2 gas analyser for combustion
Incinerators
Boilers
Reheating ovens
Melting furnaces
Advantages of O2 oxygen analysers
Reduction of excess combustion air
Saves fuel by increasing combustion efficiency
Long life of the combustion plant
Quick and easy replacement of the zirconia element
In the event of an emergency, the converter also cuts off the power supply at emergency, in response to an external contact input.
The key lock function prevents operational errors.
Why choose an in situ oxygen analyser with a zirconia probe?
The In-Situ O2 analyser with Zirconia probe offers an accurate measurement of ± 1% on the measured oxygen concentration. It is also very stable over time due to its zirconia probe technology. This system is suitable for processes with high temperatures up to 1500°C depending on the type chosen.
This probe is a very reliable and robust instrument, it can be used in the most difficult conditions (dust, smoke, etc.). Its construction with resistant materials such as 316L stainless steel guarantees an excellent resistance to humid and corrosive atmospheres.
The zirconium oxide analyser is equipped with a backlit LCD display for easy reading of results even in the darkest of places.
The transmitter is also equipped with an audible and visual alarm when preset limits are exceeded.
Service life
Easy to install
Wide temperature range
User-friendly operation
Among the benefits, they offer:
Very long sensor life
Easily replaceable zirconia sensor type
Easy installation: no fume extraction required
User-friendly operation
Wide process temperature range
No need for a reference air instrument
Fast response (4-7 seconds)
Predictive and advanced diagnostics
IP66 or IP67 enclosure
Fieldbus and RS-485 or HART™ communication
Datasheet
Operating principle and application
At the heart of this device is an in-situ zirconia sensor that guarantees fast, accurate oxygen measurement. Mainly dedicated to O2 measurement in non-combustible gas mixtures, this analyser is particularly suited to critical environments such as industrial heat production in refineries, petrochemical reactor furnaces, and other large combustion plants.
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, theanalyser 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-point SPST-NO contacts for critical functions such as high/low limit alarm, maintenance in progress, purge in progress, calibration in progress, and the analyser 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
The analyser offers installation flexibility with panel- or pipe-mounting options. The cable length between controller and detector can be up to 100 meters, offering adaptability to a variety of factory configurations. Power can be supplied at 100-120 Vac or 200-240 Vac, at a frequency of 50/60 Hz, guaranteeing worldwide compatibility.
Depending on the conditions of your processes you can combine the modules below
Oxygen gas analyser model selection
Select the required modules combination according to the process conditions using below table.
Process conditions
Module selection
Application example
Temperature
Dust
Tube material
Back purge
Tube type
Tube code (*)
Detector type
Gas boiler
≤ 600 °C
≤ 0.1 g/Nm³
SS316
No
Standard guide tube
631B562-0#
ZFK8
Biomass, oil, coal boiler/ Incinerator
≤ 600 °C
≤ 5 g/Nm³
Yes
Guide tube with backpurge
631B563-0#
≤ 25 g/Nm³
Yes
Direct tube for high particulate
631B673-0#
Yes
Direct tube for HP with deflector
631B677-0#
≤ 1000 °C
≤ 0.2 g/Nm³
SS310
No
Dual Flange (DF) Guide tube for high temperature (HT)
631B685-0#
ZFKH
≤ 5 g/Nm³
Yes
DF Guide tube for HT with backpurge
631B684-0#
≤ 25 g/Nm³
Yes
Direct tube for HT and HP
631B675-0#
Yes
Direct tubefor HT and HP with deflector
631B678-0#
Incinerator / Furnace / Glass / Metal industry
≤ 1300 °C
≤ 0.2 g/Nm³
Kanthal
No
Guide tube for very high temperature
631B682-0#
≤ 5 g/Nm³
Yes
Guide tube for very high temperature with backpurge
631B683-0#
≤ 800 °C
≤ 0.5 g/Nm³
SS310
Yes
ZTA ejector module
ZTA2
ZFK8
≤ 1500 °C
SiC
Yes
ZTA ejector module
ZTA1
Remarks
(*) The last digit of the tube code is dedicated to the tube insertion length as per below list:
"1" = 300 mm
"2" = 500 mm
"3" = 750 mm
"4" = 1000 mm
"Z" = specific length -> consult Fuji
Notes :
- In case of very humid gas, keep the flange hot enough to prevent condensation - In case of highly corrosive gas, please consult Fuji for special materials - If the gas flow is lower than 5 m/s, use ejector module instead of flow tube
How to choose an in situ oxygen analyser with a zirconia probe?
You need to measure the oxygen concentration of your industrial process?
We help you configure your oxygen measurement platform for :
Combustion control
Safety measurement
Environmental monitoring
Furnace atmosphere control
Inerting process
Other industrial processes
With the data from this questionnaire, our engineers will select the best combination for reliable and accurate oxygen analysis. 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 allow us to understand the specifics of your process, and thus adapt the configuration of your O2 analysis solution.
Questionnaire
Application questionnaire analyser O2 zirconia
Download the questionnaire so that we can suggest the best solution for your application!
