Flue Gas Oxygen Analyzer

Fuji Electric ZKM Direct Insertion Zirconia Oxygen Analyzer

Fuji Electric Oxygen Analyzer in Situanalyser_enquiry

General Specifications

Application: Oxygen in flue gas up to 1000 Deg C
Measuring method: Directly inserted probe into combution gasses (zirconia cell)
Measuring range: 0 to 2 ··· setting range at option 2 in 50 vol% O2 (in 1 vol% O2 steps)
Repeatability: Within ±0.5%FS
Linearity: Within ±2%FS
Response time: Less than 4 sec, for a 90% step change
Warmup time: approx 10 min
Analog output: 4 to 20mA DC (allowable load resistance less than 500Ω) or 0 to 1V DC (output resistance more than 100Ω)
Power supply:
Rated voltage;
100 to 120V AC (operating voltage 90 to 132V AC)
200 to 240V AC (operating voltage 190 to 264V AC)
Rated frequency; 50/60Hz
Power consumption: Maximum 240VA (Detector: approx. 200VA, Converter: approx. 40VA)
Normal 70VA (Detector: approx. 50VA, Converter: approx. 20VA)
Fuji Electric Brand

Fuji Electric ZKM In-situ Zirconia Oxygen Analyser

This oxygen analyser is deigned to provide relieable, fast responce continuously measure oxygen concentration in combustible exhaust gas of industrial boilers or furnaces, and is ideally suited for combustion control and management. The analyser system is comprised of the detector and converter coupled together as a complete system. Detector setting configuration includes the detector flow tube and zirconia detecting sensor. The flow tube is inserted directly into the gas and directs gas to the sensor for measurement. The converter (ZKM) is comprised of the signal processor, input/output and communications, display and system controls. The converter is equipped with advanced functionality such as performing the sensor diagnostics and sensor recovery function, so the detector can be used within long term stability.
Fuji Oxygen Gas Analyser




1. Fast Response for efficient combustion control 
Because the zirconia cell is inserted directly into the flue gas, the ZFK will respond to a 90% change in 4 seconds. This allows its 4-20mA signal to be used as the oxygen trim input in many combusion contol packages. 

2. No Sample systems to block or Maintain 
As the oxygen detector is inserted directly into the flue gas, there is no need for a sample conditioning system. This provides lower cost of ownership, less maintenace and less process downtime. This feature also brings benefits to combustion of biomas or other fuels where the flue gas may have contaminents.

3. Easy maintenance
The sensor is equipped with a replaceable detector. The detector can be replaced without physically removing the probe or the guide tube from the flue.

4. More reliable than sensor diagnosis, sensor recoverable function
With some Oxygen sensors and flue gas compositions, zirconia cells can deteriate over time. The new revolutionary sensor recovery feature allows the oxgen anaysers sensor to be regenerated electronically. This provides greater reliability and long-lasting stability.

5. Safe and secure
The system detects thermocouple break for heater control on the sensor side. The analyzer features the safety functions of either isolating power supply to the detector, or isolating power via external contact input.

5. Easy operation
Operating the ZFK gas analyser includes self tuning control whic can be performed via the front panel, without the need for specialist communication equipment.

Analysing air pollution is the first step toward preserving a clean atmospheric environment. FUJI developed the first infra-red gas analyser in Japan to use mass-flow sensors. Since then, we have supplied customers with various types of gas analysers to support environmental preservation and control efforts. These efforts include measurements of atmospheric pollution and detection of low density of SOx and NOx, generated by incinerating facilities and boilers. FUJI's gas analysers are commonly used to monitor the atmosphere to help maintain a cleaner natural environment


Colour Brochure

One Download

ZKM - ZFK8 Colour Brochure (336 KB)



Gas Analyzer (ZRY) (148 KB)
ZKM - ZFK8 Datasheet (465 KB)
ZFK, ZRY Zirconia Oxygen Analyser Datasheet (130 KB)

Instruction Manual


ZRY Instruction Manual (180 KB)
ZKM Instruction Manual (1883 KB)
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