Instrumentation solutions and gas analysis

Gas analysis system

A gas analysis system continuously measures the composition of a gas mixture in order to monitor an industrial process, improve its efficiency, and ensure the safety of a facility...

A gas analysis system continuously measures the composition of a gas mixture to monitor an industrial process, improve its efficiency, ensure plant safety, or control atmospheric emissions.Unlike a single- analyser , the system handles the entire measurement chain: gas sampling, sample transport, conditioning, analysis, data processing, and communication with the supervisory control system.Fuji Electric France offers a wide range of gas analysis products and systems that can be configured according to the components to be measured, process characteristics, and industrial environmental constraints. Our solutions can combine different analytical technologies to simultaneously measure up to 14 components, including O₂, CO, CO₂, NO, NO₂, NOx, N₂O, SO₂, NH₃, HCl, CH₄, VOCs, H₂O, and H₂.

Showing 25–37 of 37 results

Delete all

Please contact us
Biogas analyser - ZPAF
Ref: ZPAF

Request a quote
Please contact us
Integrated biogas analyser - ZPSB
Ref: ZPSB

Request a quote
Please contact us
Electro-inductive dust analyser - ZiDM-3 MONIDUST
Ref: ZiDM-3

Request a quote
Please contact us
Electro-inductive dust analyser - ZiDM-4 EMIDUST
Ref: ZiDM-4

Request a quote
Please contact us
Electro-inductive dust analyser - ZiDM-5 QALDUST
Ref: ZiDM-5

Request a quote
In stock
Optical dust analyser - ZFDM-4
Ref: FP-ZFDM-4-220
Retail price
depending on configuration
13855,00 €
Discounts available on request
Request a quote
Please contact us
Remote management controller for M2M communication - FBOX-500
Ref: FBOX500

Request a quote
Please contact us
Heated Sampling Line for Gas analyser —HL
Ref: HL

Request a quote
Please contact us
DAHS Data Acquisition and Processing Software for CEMS Gas analyser
Ref: DAHS

Request a quote
Please contact us
Fuji ACE DATA QAL3 software
Ref: Auto Check Extensive Data QAL3

Request a quote
Please contact us
Oxygen- analyser -flow cell – FTC
Ref: FTC

Request a quote
Please contact us
Oxygen- analyser Ejector Module – ZTA/ZTF

Request a quote
In stock
Convection tube for oxygen analyser

Retail price
depending on configuration
577,00 €
Discounts available on request
Request a quote

Made in France
Local service near you
Customer support every step of the way
Seamless technical communication

Technologies

Discontinuated products - Gas analysers
Find out how Fuji Electric is replacing its older gasanalysers models with innovative, sustainable versions that optimize performance and environmental compliance.

Gas analysis system: a comprehensive solution for measuring industrial gases or natural gas

Industrial facility with chimneys and steam-emitting processing units

A gas analysis system is a set of instruments designed to provide a representative, stable, and actionable measurement of a gas's composition.

It is not limited to the instrument that performs the measurement. To function properly, theanalyser must receive a sample that is compatible with its detection technology, under controlled conditions of temperature, pressure, flow rate, and humidity.

Depending on the application, the analysis system can include:

a sampling probe installed on the pipe or chimney;
a filter designed to trap dust and particles;
a heated or unheated sampling line;
a sampling pump;
a gas cooler or gas dryer;
additional filters and sample-processing devices;
one or more gas- analysers ;
flow, pressure, and temperature sensors;
a control unit;
an operator interface;
data acquisition and processing software;
analog outputs, alarms, and communication protocols.

This design protects the instruments, minimizes sampling-related disturbances, and ensures that the gas introduced into theanalyser remains representative of the process.

Brochure

Fuji Electric gas analysers

Download the brochure to find out more about precise, robust multi-gas analysis solutions for all your industrial applications.

Download

What is a gas analysis system used for?

Measuring gas composition provides operators with essential information for understanding and controlling their facilities.

A technician operating a Fuji Electric CEMS system via a touchscreen at an industrial facility

Controlling an industrial process

Continuous analysis makes it possible to monitor changes in concentration and quickly adjust operating parameters. It helps stabilize processes, improve product quality, and reduce the consumption of raw materials and energy.

A technician wearing a hard hat observing an intense flame inside an industrial facility

Optimizing combustion

Measuring oxygen, carbon monoxide, and carbon dioxide allows for an assessment of combustion quality. The data obtained can be used to adjust the air-to-fuel ratio, reduce unburned fuel, and improve the energy efficiency of boilers, furnaces, and incinerators.

A technician wearing a hard hat inspecting an industrial facility equipped with large storage tanks

Monitor air emissions

Gas analysis systems help ensure compliance with environmental standards by continuously measuring pollutants in industrial flue gases. They facilitate the monitoring of emissions, the detection of exceedances, and the generation of data necessary for environmental monitoring.

Two technicians wearing hard hats inspecting an industrial facility; one of them is pointing to a piece of equipment

Securing the facilities

Detecting oxygen, hydrogen, methane, or other components helps identify an abnormal atmosphere, a leak, a ventilation problem, or a process-related hazard.

A laboratory technician setting up a gas- analyser er connected to a computer to monitor measurements

Checking the quality of a gas

In applications involving the production, processing, or recovery of gases, analysis is used to verify their purity and detect undesirable components prior to processing, storage, or use.

How does a gas analysis system work?

The process depends on the method and analytical technology used, but an extractive analysis workflow generally consists of four main steps.

Cylindrical industrial sensor mounted on a metal flange and connected by cables

1. Sample collection

A probe collects a sample of the gas from the pipeline, furnace, reactor, or stack. Its design and location are critical to obtaining a representative sample.

In gases that are dusty, hot, or humid, the sensor may include a filter and a heating element to prevent clogging or condensation.

A technician operating a Fuji Electric CEMS cabinet via its touchscreen at an industrial facility

2. Gas transfer

The sample is transported to the analysis cabinet via a dedicated line. This line can be heated to keep soluble or condensable components in the gas phase.

A pump circulates the gas when the process pressure does not allow for natural flow.

Interior of a gas analysis cabinet with measurement modules, tubing, wiring, and electrical components

3. Sample preparation

Before analysis, the gas may need to be filtered, cooled, dried, or have its flow rate and pressure regulated. In other words, the gas is prepared before being analyzed to ensure reliable measurements.

In addition, the formulation protects the sensing cells and maintains the conditions required by the analytical technology. However, it must be carefully designed so as not to remove or alter the target components.

A technician wearing a hard hat checking the screen of an open gas analysis cabinet at an industrial facility

4. Data analysis and processing

The conditioned gas is fed into one or more analysers. Each instrument generates a signal corresponding to the measured concentration.

A controller can then centralize the data, manage measurement sequences, control solenoid valves, initiate calibrations, and transmit the results to the facility’s control system.

What technologies should be incorporated into a gas analysis system?

The choice of technology depends primarily on the target component, its concentration, the composition of the mixture, and the process conditions.

analyser Fuji Electric ZKJ gas analyzer with a display showing the concentrations of five gas components

Non-dispersive infrared absorption analysis

NDIR technology is used to measure many gases that absorb infrared radiation, including:

It is suitable for a wide range of applications in combustion control, process monitoring, and multigas analysis.

analyser Fuji Electric ZAJ rack-mounted gas analyzer with a digital display showing the measured concentration

Paramagnetic analysis of oxygen

Paramagnetic technology takes advantage of the unique magnetic properties of oxygen. It enables continuous measurement of O₂ without the need for a consumable electrochemical cell.

It is particularly well-suited for applications requiring stable, selective, and long-term measurement of oxygen in a properly conditioned gas mixture.

analyser ZKM gas analyzer from Fuji Electric with a ZFK8 probe for measuring oxygen concentrations

Oxygen analysis using zirconium oxide

Zirconia-based measurement is commonly used to monitor oxygen in flue gases. It provides a rapid response and can be integrated directly into the flue or into an exhaust system.

This technology is particularly well-suited for controlling combustion in boilers, furnaces, and thermal systems.

analyser Fuji Electric ZAF gas analyzer with a digital display showing the hydrogen concentration measurement

Thermal conductivity detection

Thermal conductivity measurement compares the ability of the sample gas to conduct heat with that of a reference gas.

In particular, it can be used to measure hydrogen or high concentrations of a component in a binary mixture or a mixture with a controlled composition.

analyser Fuji Electric ZSS laser gas system with control unit and flange-mounted optical modules

Laser technology

Laser analysis makes it possible to selectively target certain molecules, such as ammonia or hydrogen sulfide, with high sensitivity.

Depending on the application, the measurement can be performed directly in the process or on a sample taken from the process.

Three Fuji CEMS cabinet configurations for gas analysis and monitoring in industrial settings

Continuous monitoring of industrial emissions

For facilities subject to regulatory requirements, continuous monitoring makes it possible to measure pollutant concentrations, detect deviations, and transmit the results needed for environmental monitoring.

Continuous emissions monitoring systems (CEMS) combine the following analysers, sampling equipment, sample processing, and data acquisition functions.

Fuji Electric's CEMS systems are QAL1-certified for compliance. This certification ensures compliance with the requirements for regulatory emissions monitoring, depending on the products, measured components, and selected configurations.

Single-gas analyser or multi-gas analyser system?

A system can be designed to measure a single component or multiple gases simultaneously. Depending on the needs, it can take the form of a fixed installation, a complete cabinet, or equipment intended for one-time measurement campaigns. In addition, gas analysis systems include compact and mobile analysers .

Fuji Electric Delta O2 system with two analysers and sensors mounted on an industrial cabinet

Single-gas system

A single-gas configuration addresses a specific need, for example:

measure oxygen to optimize combustion;
monitor hydrogen in a process;
measure the humidity of a gas;
Detect methane in a biogas plant.

This architecture may be the preferred choice when the desired metric is clearly defined and no further analysis is required.

Fuji Electric ZPSB biogas cabinet with control panel, gas cylinders, and indicator light

Multi-gas system

A multigas system combines multiple sensors or technologies to monitor different components using a single system.

This solution centralizes data collection, processing, acquisition, and reporting. It also simplifies operations when multiple parameters need to be correlated to interpret the process.

Fuji Electric systems can be configured to simultaneously measure numerous gas components and, when necessary, incorporate additional measurements of flow rate, pressure, and temperature.

Which gases can be measured?

The system configuration depends on the components being analyzed and their concentration ranges.

The main measures available include:

Component	Formula	Examples of Use
Oxygen	O₂	Combustion, Inerting, Gas Purity
Carbon monoxide	CO	Combustion, Safety, Emissions
Carbon dioxide	CO₂	Combustion, Biogas, Industrial Processes
Nitric oxide	NO	Emissions Control
Nitrogen dioxide	NO₂	Environmental monitoring
Nitrogen oxides	NOx	Combustion and Atmospheric Emissions
Nitrous oxide	N₂O	Chemical Processes and Emissions
Sulfur dioxide	O₂	Combustion and Desulfurization
Ammonia	NH₃	NOx Treatment and Ammonia Slip Control
Hydrogen chloride	HCl	Incineration and Flue Gas Treatment
Methane	CH₄	Biogas, anaerobic digestion, energy processes
Hydrogen	H₂	Chemical Engineering, Energy, and Metallurgy
Water	H₂O	Moisture in Gases and Fumes
Volatile organic compounds	VOCs	Industrial Processes and Monitoring of Discharges

The measurable components are not limited to this list. An application study can help determine which technologies are compatible with the gas mixture, identify potential interferences, and assess expected performance.

How to choose a gas analysis system?

The selection of a gas analysis system is not based solely on the component to be measured. It must take into account all conditions that could affect sampling, sample preparation, and measurement.

Industrial facility equipped with columns, tanks, and piping systems with steam venting

Components and measurement ranges

It should be noted that:

the gases to be measured;
their minimum and maximum concentrations;
the desired units;
the expected level of accuracy;
alarm thresholds;
the possible presence of interfering gases.

A measurement in ppm does not require the same technology or the same sample preparation as a concentration expressed as a volume percentage.

Illustration of stylized gas molecules on a blue background evoking the composition and analysis of gases

The complete composition of the gas

Water vapor, dust, tar, aerosols, solvents, or corrosive compounds can interfere with measurements or damage the instruments.

The composition of the mixture must be analyzed as a whole, including components that are not directly measured.

A technician wearing a hard hat connecting a gas line to an analysis cabinet at an industrial site

Process temperature and pressure

Very hot gases generally must be cooled before entering theanalyser. Conversely, if the temperature in the line is too low, condensation may occur.

Pressure fluctuations also affect sampling, sample flow rate, and certain measurement technologies.

Transparent tube with a condenser connected to a gas analysis device in an industrial setting

Humidity level

Moisture is a critical parameter. It can be removed prior to analysis, retained in the sample using a heated line, or measured in order to convert concentrations between wet and dry gas.

The choice depends on the components being sought and the expected measurement basis.

A Fuji Electric technician inspecting a gas- analyser r connected to a sensor mounted on an industrial duct

Dust load

In dusty fumes, the system must incorporate appropriate filtration, simplified access to maintenance components, and, if necessary, a backblow device.

analyser Industrial equipment in an explosion-proof enclosure installed in an ATEX Zone 1 area on a process unit

Response time

The line volume, the sampling flow rate, the distance between the sampling point and theanalyser , and the number of conditioning steps determine the overall response time.

A rapid control application requires a different architecture than a system designed for medium- or long-term regulatory monitoring.

Fuji CEMS cabinet installed at an industrial site with ducts, piping, and measurement equipment

Installation requirements

The system must be compatible with:

room temperature;
humidity;
dust in the room;
vibrations;
exposure to the elements;
corrosive atmospheres;
whether it is classified as an explosive atmosphere;
the space available for installation and maintenance.

A Fuji Electric technician operating a touchscreen-based gas analysis cabinet at an industrial facility

Outputs and communication protocols

The results can be transmitted to the control system or the supervisory system via analog signals, alarm contacts, or digital protocols.

The requirements for archiving, visualization, computation, and traceability must be defined at the system design stage.

A Fuji Electric technician installing a sensor on a metal conduit at an industrial site

Maintenance and calibration

The accessibility of filters, pumps, sensing cells, and calibration gas cylinders directly affects the system's availability.

Depending on the desired level of automation, the system can incorporate automatic calibration, purging, cleaning, or backflushing sequences.

Applications of gas analysis systems

Network of insulated industrial piping with integrated valves and measuring instruments

Energy and combustion facilities

In boilers, turbines, furnaces, and thermal plants, measuring oxygen, CO, and CO₂ helps optimize combustion and monitor efficiency. Gas analysis systems monitor power plants and biogas facilities.

Analyzing NOx, SO₂, and other pollutants also helps control air emissions.

Waste sorting center with plastic bottles in the foreground and workers on a recycling line

Incineration and waste treatment

Analytical systems monitor combustion and emissions in incineration, waste-to-energy, and thermal treatment facilities.

They can combine gas analysis with measurements of dust, flow rate, pressure, and flue gas temperature.

Two technicians wearing hard hats supervising a high-temperature process at an industrial facility

Metallurgy and heat treatment

In furnaces and processing lines, the composition of the atmosphere directly affects product quality.

Measuring oxygen, hydrogen, carbon monoxide, or carbon dioxide allows for the monitoring of atmospheres used in heating, annealing, galvanizing, or protective processes.

Chemical and petrochemical industry

Gas analysis is used to monitor reactions, control processing units, verify gas quality, and detect abnormal conditions.

The materials, sampling system, and zone classification must be selected based on the chemical properties and risks of the process.

Biogas production facility with digesters, storage tanks, and technical equipment in a rural area

Biogas and anaerobic digestion

Measuring methane, carbon dioxide, oxygen, hydrogen, or hydrogen sulfide makes it possible to monitor the production, treatment, and utilization of biogas.

A multichannel system can also analyze several points in the same process one after another.

Industrial paper manufacturing line with large rolls and automated production equipment

Paper industry

Analytical systems can be used to monitor boilers, waste-to-energy furnaces, and production stages that require control of combustion or the gas atmosphere.

Industrial glass bottle production line with heated containers moving beneath the equipment

Glass, ceramics, and cement

Analyzing furnace flue gases and the furnace atmosphere helps improve thermal efficiency, stabilize production quality, and monitor emissions.

Operator wearing protective gear operating an automated food production line

Food industry

Gas measurement can be used in combustion, fermentation, drying, preservation, or wastewater treatment processes.

The benefits of Fuji Electric gas analysis systems

A Fuji Electric representative discussing an industrial sensor with a customer in an office

A solution tailored to the process

Measurement technology, sampling, and conditioning are determined based on the actual gas composition and operating conditions.

Several analytical technologies are available

Fuji Electric offers a variety of technologies for measuring industrial gases: NDIR infrared, paramagnetic, zirconia, thermal conductivity, laser, and other methods tailored to the specific components being measured.

Equipment suitable for regulatory oversight

The analysers and systems can be integrated into continuous emissions monitoring systems to measure regulated components and facilitate data analysis.

All Fuji Electric gas- analysers are QAL1-certified.

Simultaneous measurement of multiple components

Multi-gas architectures make it possible to combine multiple measurements within a single solution and centralize process data.

Integration of additional parameters

The system can combine gas composition analysis with measurements of pressure, temperature, flow rate, or dust levels to provide a more comprehensive view of the facility.

Automation of essential functions

The sampling, channel switching, calibration, purging, and diagnostic procedures can be automated.

Simplified operation

An operator interface can centralize concentration readings, alarms, equipment status, and maintenance operations.

Design for industrial environments

Equipment is selected based on installation constraints: ambient temperatures, dust, humidity, corrosive atmospheres, indoor or outdoor installation, and potentially explosive areas.

Comprehensive support from Fuji Electric France

A Fuji Electric technician supervising a waste treatment facility from an industrial platform

Selecting a gas analysis system requires taking into account process data, expected analytical performance, installation constraints, and operational objectives.

Fuji Electric France's specialists will analyze your application to determine:

the sampling point and method;
the appropriate analytical technologies;
the necessary sample preparation;
the measurement ranges;
single-gas or multi-gas architecture;
automation systems and interfaces;
output signals and communications;
calibration equipment;
installation and maintenance requirements.

This approach ensures a consistent measurement process, from sample collection to the transmission of results.

Frequently asked questions about gas analysis systems

What is the difference between a analyser and a gas analysis system?

analyser is the instrument used to measure the concentration of one or more components. The analytical system also includes the equipment necessary for sample collection, transfer, conditioning, automation, and data transmission.

Can multiple gases be measured using the same system?

Yes. A multigas system can combine multiple sensors or analytical technologies to measure different components simultaneously. Compatibility depends on the gases being analyzed, their concentrations, and any potential interferences.

What is the difference between an in situ measurement and an extractive measurement?

An in situ measurement is taken directly from the duct or stack. In an exhaust system, a sample is collected and then transported to a remote- analyser . The choice depends, in particular, on temperature, dust, humidity, accessibility, and measurement technologies.

Why does the gas need to be conditioned before analysis?

Conditioning stabilizes the sample's flow rate, pressure, temperature, and humidity. It also protects theanalyser from dust, condensation, and substances that could damage the measuring cell.

How can you prevent condensation in a sampling line?

A heated line keeps the gas above its dew point until it reaches the processing stage. The temperature must be set based on the water content and any components that could condense or dissolve.

How can you ensure the accuracy of a gas analysis system?

Accuracy depends not only on the analytical technology but also on the representativeness of the sample, the leak-tightness of the system, the stability of the flow rate, sample conditioning, and calibration. The entire chain must be designed and maintained as a single system.

Can a system analyze multiple sampling points?

Yes. A multisampling device can automatically switch between multiple lines. However, you must take into account the purge time and response time between each measurement point.

What information is needed to size the system?

It is recommended to specify the expected components and concentrations, the gas composition, its temperature, pressure, humidity, and dust content, as well as the sampling point, ambient conditions, desired response time, and communication requirements.

What technologies are available for gas analysis products?

Gas analysis instruments can use different technologies depending on the components to be measured and the process conditions: NDIR infrared, paramagnetism, zirconium oxide, thermal conductivity, flame ionization, or laser diode. For rapid analysis of multiple components in complex gas mixtures, a mass spectrometer can also be integrated into the gas analysis system.

Design your gas analysis system with Fuji Electric

Do you need to measure one or more gaseous components, control your process, or monitor your industrial emissions?

Please provide us with the specifications of your application. Our specialists will assist you in selecting the right analysers and in designing a reliable, maintainable gas analysis system tailored to your facility.

Sales department

Our sales team is at your disposal
to help you with your projects.

Request a free quote

After-sales service

Have a question or need assistance? Our experts are here to help you with fast, reliable solutions.

Ask for help