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.
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.
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.
An analyser obtains the measurement of O₂ concentration by detecting the electromotive force generated by the difference in O₂ content between air and the sample gas.
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, UL, CSA, ATEX and QAL1 certified.
The In-Situ O2 Analyzer 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.
Among the benefits, they offer:
|Target||O2 in incombustible gas|
|Principle||Insertion type zirconia sensor|
|Range||0 ... 2 ... 50 vol% O2 (user configurable)|
|Response time (for 90%)||4 s ... 7 s|
|Output signal||4-20 mA DC or 0-1 V DC|
|Contact output||6 points, SPST-NO contact: H/L limit alarm, during maintenance, during blowdown, during calibration, analyser error|
|Contact input||3 volt-free contacts: selection from 7 items|
|Communication||RS-485 Modbus®or HART™|
|Optional functions||Combustion efficiency display, blowdown, auto calibration, selector valve, flowmeter|
|Safety functions||Detecting a break of the thermocouple for heater control in the sensor unit, the analyser stop the power supply to the detector|
The power supply to the detector may also be stopped by external input in an emergency
The key lock function prevents operational errors
|Converter installation||Panel mount or pipe mount|
|Cable length between convert and detector||≤100m|
|Power supply voltage||100-120 V AC or 200-240 V AC, 50/60 Hz|
Select the required modules combination according to the process conditions using below table.
|Process conditions||Modules 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|
|≤ 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 /|
|≤ 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|
|Notes||(*) The last digit of the tube code is dedicated to the tube insertion length as per below list:|
|'1' = 300mm||'2' = 500mm||'3' = 750mm||'4' = 1000mm||'Z' = special length -> consult Fuji|
(1) In case of very humid gas, keep the flange hot enough to prevent condensation
(2) In case of highly corrosive gas, please consult Fuji for special materials
(3) If the gas flow is lower than 5 m/s, use ejector module instead of flow tube
You need to measure the oxygen concentration of your industrial process? 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. 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.
Download the Zirconia O2 Analyser Application Questionnaire