An NDIR infrared gas analyser is a device used to measure the concentration of certain gases. Using 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 processes.
Their QAL1 certification guarantees high performance and compliance with regulations and standards. Reliable and precise, their quality design guarantees 24/24 operation in harsh environments such as industrial chimney fumes.
Their robustness reduces maintenance costs and increases boiler and equipment availability.
Extractive measurement involves taking a gas stream from the stack or gas line via a sampling probe, and routing it to the gasanalyser .
The gas is sampled and treated to ensure optimum conditions for gas analysis.
Gas concentration measurement of 1 to 5 components
Fuji Electric's range of multi-gas extractiveanalysers includes 5-gas non-dispersive infraredanalysers
They allow simultaneous and continuous measurement by extraction of 1 to 5 gases from among :
CO,CO2, NOx, SO2, CH4 and N2Ousing NDIR single- or dual-beam technology
O2 by paramagnetic, zirconia or electrochemical technology
Features of NDIR infrared gas analysers
Easy maintenance thanks to self-diagnostic functions
Good precision and excellent measurement stability over time
Large backlit display
Automatic zero and span calibration
Oxygen correction
Modbus® protocol digital link
Highly dynamic scaling (1 to 20 configurable)
simple maintenance
good precision
digital link
automatic calibration
Infrared multi-gas analysers detection principle
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 infrared light absorption into an electrical signal.
Excellent noise immunity thanks to low-impedance sensor.
The absence of moving parts makes theanalyser particularly resistant to vibration.
ZKJ - 5-component gas analyser - NDIR Double Beam
Ideal for controlling pollutant emissions
Uses a highly sensitive mass flowmeter as a gas detector
Clear, intuitive interface with advanced diagnostic andcalibration functions
Specifications
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 The infraredanalyser 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 The gasanalyser 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, theanalyser offers optimum flexibility.
Controlled energy consumption With a power consumption of 250 VA, theanalyser 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.
O2: Paramagnetic or electrochemical method (measuring element incorporated inanalyser) or zirconia methodanalyser externalanalyser type ZFK7)
ZRE - 5-component gas analyser - NDIR Single Beam
Compact and easy to use
Excellent long-term stability
No influence of humidity on measurement
Automatic calibration, communication and alarms
Simultaneous, continuous measurement of the concentration of 5 gases
CO - CO2 - NO - NOX - SO2 - CH4 - O2
Features
Simultaneous, continuous measurement of one to five components
The user can select two ranges for each component and modify them freely
Simple internal structure for easy maintenance
Compact and lightweight: 483 (W) × 133 (H) × 418 (D) mm, 8 kg
Full range of O2 measurement technologies: electrochemical, paramagnetic or zirconia
Specifications
Exceptional repeatability The infrared gasanalyser guarantees exceptional repeatability, with an accuracy of up 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 of the gasanalyser is maintained with a maximum tolerance of ± 1% PE, guaranteeing 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 The gasanalyser 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 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, theanalyser offers optimum flexibility.
Controlled energy consumption With a power consumption of 100 VA, theanalyser ensures energy-efficient operation.
Compact dimensions With dimensions of 483 (W) x 133 (H) x 418 (D) mm and a weight of 8 kg, the infraredanalyser 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 - 5-component gas analyser - NDIR Single Beam
Optimal use as an analysis unit for measuring waste combustion exhaust gases from boilers and incinerators, or gases from various industrial furnaces.
Non-dispersive infrared absorption method. Single source and beam: NO - SO2 - CO2 - CO - CH4
Electrochemical or paramagnetic method (measuring element incorporated inanalyser) or zirconia methodanalyser externalanalyser type ZFK7): O2
Features
High sensitivity Equipped with the new mass flow sensor
Easy maintenance Thanks to the simplicity of the adapted single-beam measurement method
Compact and lightweight Compact dimensions: 133 x 483 x 382mm (HxWxD) ; (19″ rack mount) for a weight of 11kg.4.
Various optimum functions available Auto calibration control, atmospheric pressure correction, alarms for high and low concentrations, remote scale change, etc.
Simple operation Easy, clear reading of 5-gas concentrations simultaneously. Simple status and maintenance messages.
Table of scales and gases measured
Model type
ZRE
ZKJ
ZPA
Visual
Gases measured
Mini scale
Max. scale
Mini scale
Max. scale
Mini scale
Max. scale
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 externalanalyser )
0-5 vol%
0-25 vol%
0-5 vol%
0-25 vol%
0 - 5vol%
0 - 25%
Fuji Electric gas analysers : lowest QAL1-certified scales
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 control of your chimney emissions with Fuji Electric's infrared multi-gas analysers !
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