An NDIR infrared gas analyser is a device used to measure the concentration of certain gases. Thanks to NDIR (Non-Dispersive Infrared) technology, this analyser detects gases by selective absorption of infrared light, enabling precise control, essential for continuous monitoring of pollutant emissions and industrial process control.
Their QAL1 certification guarantees high performance and regulatory and normative compliance.
Reliable and precise, their design quality guarantees 24-hour operation in difficult environments such as smoke from industrial chimneys.
Their robustness reduces maintenance costs and increases boiler and equipment availability.
Extractive measurement consists of taking a gas flow from the chimney or the gas pipe via a sampling probe and conveying it to the gas analyser.
The gas is sampled and treated to ensure optimum conditions for gas analysis.
Gas concentration measurement of 1 to 5 components
The Fuji Electric extractive multigas analyser range consists of non-dispersive 5-gas infrared analysers.
They allow simultaneous and continuous measurement by extraction of 1 to 5 gases from:
CO, CO2, NOX, SO2, CH4 and N2O by single or double beam NDIR technology
O2 by paramagnetic, Zirconia or electrochemical technology
Characteristics of the extractive infrared multigas analysers NDIR
Easy maintenance thanks to self-diagnostic functions
Good accuracy and excellent stability of the measurement over time
Large backlit display
Automatic zero and span calibration
Correction with oxygen
Digital link to Modbus® protocol
Large scale dynamics (1 to 20 configurable)
simple maintenance
good precision
digital link
automatic calibration
Detection principle of analysers multigas infrared
In non-dispersive infrared spectroscopy, the mass flow meter determines the amount of infrared light absorbed by the measuring cell.
Mass flow meter :
It converts the absorption of infrared light into an electrical signal.
Excellent resistance to interference thanks to the low impedance sensor.
The absence of moving parts makes the analyzer particularly resistant to vibrations.
ZKJ - analyser 5-component gas - NDIR Double Beam
Ideal for controlling polluting emissions
Uses a highly sensitive mass flowmeter as a gas detector
Simultaneous and continuous measurement of 5 gases:
CO2 - CO - CH4 - NOX - SO2 - O2 - NO - N2O
Specifications
The reference cell of the double beam principle offers excellent performance
Low scales from 0-20 ppm
Excellent zero point stability: ± 1% FS per week
Integrated interference detectors help reduce cross interference optimally
Clean and intuitive interface with advanced diagnostic and calibration functions
Datasheet
Exceptional repeatability Exceptional repeatability is assured with an accuracy of up to ± 0.5% of full scale (FS). For ranges below 50 ppm, repeatability remains outstanding with an accuracy of ± 1% FS.
Precise linearity analyser infrared maintains precise linearity with a maximum tolerance of ± 1% PE, ensuring constant correlation between measured concentration and actual value.
Zero stability Zero drift is minimized with a maximum variation of ± 1% FS per week. Even for ranges below 50-200 ppm, zero stability remains remarkable, with a drift of only ± 2% FS.
Scale stability Scale drift is also controlled, with a maximum variation of ± 2% PE per week, ensuring consistent measurements.
Fast Response Time Theanalyser gas displays high reactivity with a fast response time of ≤ 60 seconds to reach 90% of the measured concentration.
Versatile outputs and inputs Analog outputs: 4-20 mAdc or 0-1 Vdc outputs, up to 12 points, offer maximum flexibility in connectivity. Contact inputs: Dry contact inputs allow remote control, including scale change, auto-calibration start, hold measurement, average reset, and pump start/stop.
Versatile contact outputs SPST-NO and SPDT contact outputs ensure efficient communication with functions such as error detection, self-calibration, CO peak alarm, power failure, etc.
Easy communication Optional RS485 (Modbus® ) communication provides network connectivity for easy integration with other systems.
User-friendly display The backlit LCD display provides a clear view of the instantaneous value, the instantaneous corrected O2 value, the average corrected O2 value and the average O2 value.
Universal power supply Compatible with supply voltages from 100 to 240 Vac, 50/60 Hz,analyser offers optimum flexibility.
Controlled energy consumption With a power consumption of 250 VA,analyser ensures energy-efficient operation.
Compact dimensions Dimensions of 483 (W) x 177 (H) x 600 (D) mm and a weight of around 22 kg ensure easy integration in a variety of environments.
Measurement principle - analyser gas NDIR double beam
O2: Paramagnetic or electrochemical method (measuring element incorporated in the analyzer) or zirconia method (external analyzer type ZFK7)
ZRE - analyser 5-component gas - NDIR Single Beam
Compact and easy to use
Excellent stability over time
No influence of humidity on the measurement
Automatic calibration, communication and alarms
Simultaneous and continuous measurement of the concentration of 5 gases:
CO - CO2 - NO - NOX - SO2 - CH4 - O2
Specifications
Simultaneous and continuous measurement of one to five components
Possibility for the user to select two scopes for each component and to modify them freely
Simple internal structure for easy maintenance
Compact and lightweight: 483 (W) × 133 (H) × 418 (D) mm, 8 kg
Complete range of O2 measurement technologies: electrochemical, paramagnetic or zirconia
Datasheet
Exceptional repeatability analyser infrared gas guarantees exceptional repeatability, with accuracy down to ± 0.5% of Full Scale (FS). This accuracy remains remarkable even for ranges below 50 ppm, where repeatability reaches ± 1% FS.
Precise linearity The linearity ofanalyser is maintained with a maximum tolerance of ± 1% PE, guaranteeing a constant correlation between measured concentration and actual value.
Zero stability Zero drift is limited to ± 2% PE per week, ensuring optimum stability. For ranges of 500 ppm or less, zero self-calibration is activated for enhanced accuracy.
Scale stability Scale drift is controlled to ± 2% PE per week, guaranteeing consistent measurements.
Fast Response Time Theanalyser gas excels with a fast response time of ≤ 60 seconds to reach 90% of the measured concentration.
Versatile outputs and inputs Analog outputs: 4-20 mAdc or 0-1 Vdc outputs, up to 12 points, offer flexible connectivity. Contact inputs: Dry contact inputs enable remote control, with features such as scale change, auto-calibration start, hold measurement, average reset, and pump start/stop.
Versatile contact outputs SPST-NO and SPDT contact outputs facilitate efficient communication, with functions such as error detection, self-calibration, CO peak alarm, power failure, etc.
Easy communication Optional RS485 (Modbus® ) communication offers seamless network integration with other systems.
User-friendly display The backlit LCD screen provides a clear view of the instantaneous value, the instantaneous corrected O2 value, the average corrected O2 value, and the average O2 value.
Universal power supply Compatible with supply voltages from 100 to 240 Vac, 50/60 Hz,analyser offers optimum flexibility.
Controlled energy consumption With a power consumption of 100 VA,analyser ensures energy-efficient operation.
Compact dimensions With dimensions of 483 (W) x 133 (H) x 418 (D) mm and a weight of 8 kg,analyser infrared is easy to integrate into a variety of environments.
Measuring principle
The amount of infrared radiation absorbed in the measuring cell is detected by a micro mass flow meter.
The low-impedance micro mass flowmeter has excellent immunity to interference, and the sensor, with no moving parts, is insensitive to vibration.
ZPA - analyser 5-component gas - NDIR Single Beam
ZPA is best suited to the measurement of exhaust gas from refuse incinerators, boilers, and various industrial furnaces.
Non-dispersion infrared-ray absorption method Single light source and single beams (single beam system)NO - SO2 - CO2 - CO - CH4
Electrochemical or paramagnetic method (measuring element incorporated intoanalyser) or zirconium method (analyser external type ZFK7): O2
Specifications
High sensitivity Equipped with the new mass flow sensor
Easy maintenance Maintenance is easy due to the simple measurement unit of single-beam system adapted
Compact and lightweight Compact dimensions: 133 x 483 x 382mm (HxWxD) ; (19″ rack mount) for a weight of 11kg.4.
Various optimum functions available Self-calibration control, atmospheric pressure correction, alarms for high and low concentrations, remote scale change, etc.
User-friendly operation Clear and easy-to-read display of all five gas concentrations at once. Simple status and maintenance messages.
Measuring components and ranges
Type
ZRE
ZKJ
ZPA
Model
Range
Mini range
Max. range
Mini range
Max. range
Mini range
Max. range
NO
0-200ppm
0-5000ppm
0-50 ppm
0-5000 ppm
0.200 ppm
0 - 5000ppm
SO2
0-200ppm
0-10 vol%
0-50 ppm
0-10 %
0 - 200ppm
0 - 10%
CO2
0-100ppm
0-100 vol%
0-20 ppm
0-100 %
0 - 100ppm
0 - 100%
CO
0-200ppm
0-100 vol%
0-50 ppm
0-100 %
0 - 200ppm
0 - 100%
CH4
0-500ppm
0-100 vol%
0-200 ppm
0-100 %
0 - 500ppm
0 - 100%
N2O
_
_
0-200 ppm
0-2000 ppm
_
_
O2 (electrochemical)
0-10 vol%
0-25 vol%
_
_
0 - 10vol%
0 - 25%
O2 (paramagnetic)
0-10 vol%
0-25 vol%
0-5 vol%
0-25 vol%
0 - 5vol%
0 - 100%
O2 (analyser external)
0-5 vol%
0-25 vol%
0-5 vol%
0-25 vol%
0 - 5vol%
0 - 25%
Fuji Electric gas analysers QAL1 lowest certified ranges
ZRE
ZKJ (1)
ZPA
mg/m3
ppm
mg/m3
ppm
mg/m3
ppm
CO
0 - 125
0 - 100
0 - 125
0 - 100
0 - 375
0 - 300
CO2
-
0 - 20 %
0 - 20 %
NO
0 - 268 (2)
0 - 200
0 - 134 (2)
0 - 100
0 - 268 (2)
0 - 200
NOx
-
-
0 - 205 (3)
0 - 100
-
-
SO2
0 - 571
0 - 200
0 - 286
0 - 100
0 - 571
0 - 200
O2 (4)
0 - 25 %
0 - 25 %
0 - 25 %
(1) ZKJ is currently being certified by TÜV Rheinland. (2) The unit for the NO component certification range is mg / m3 NO. To express the value in mg / m3 NO2, multiply by 1.53 (3) The unit for the NOx component certification range is mg / m3 NO2. (4) 0-10% is also certified as an additional range for O2. CO, NO and SO2 components are also certified with higher additional ranges, see corresponding certificates.
Continuous monitoring of your chimney emissions with Fuji Electric infrared multi-gas analysers !
