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Product Center

Gas Analysis Product Matrix

Having obtained multiple international certifications such as CE, SIL2, and ATEX, our products target scenarios including environmental monitoring, safety monitoring, energy conservation and emission reduction, new energy, energy management, and industrial processes. We are committed to providing global customers with accurate and reliable products and system solutions.
Oxygen Analyzers
Trace detection is simpler, faster and more accurate, fully meeting the precise needs of multiple industries (semiconductor, SMT, petrochemical, etc.). The full range offers explosion-proof/portable options, ensuring stability and reliability in complex working conditions.
Moisture Analyzers (Dew Point Meters)
Accurate dew point measurements down to very low levels (as low as - 120℃Td) Dew point meters, sensors and transmitters for quality control, production and in-process control of many industries, such as pharmaceutical, chemical, plastics, and the food and beverage industries.
Thermal Conductivity Analyzers
By accurately capturing the differences in thermal conductivity of gases, it achieves high-precision measurement of components and concentrations. It can easily handle both single gases such as hydrogen and helium, as well as binary and multi-component mixed gases.
Tunable Diode Laser (TDL) Continuous Process Gas Analyzer
The characteristic feature is that the physical measurement occurs directly in the process gas line. The diode laser PC6500/PC68 records the process data without contact and in real time, even under extreme conditions.
Gas Chromatograph (GC) FID \ PDHID \ PED \ TCD
High-efficiency chromatographic separation with a detection limit as low as 5ppb, making it your first choice for gas impurity analysis!Online monitoring enables real-time and precise control in petrochemical, metallurgical, industrial gas and other fields, escorting production.
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Mass Flow Meters
Versatile flowmeter with detection of wet steam conditions and best-in-class accuracyThe flowmeter for cost-effective measurement and easy monitoring of utility gases
Infrared Analyzers
Diversified enhanced infrared analyzers can accurately adapt to users' various gas detection application scenarios. A rich variety of enhanced infrared analysis modules can accurately measure dozens of gases. Combined with modules of different specifications and performances, customized combination solutions can be provided for customers to meet differentiated detection needs.
Gas Chromatographs FID
FID total hydrocarbon analyzers are used to measure the hydrocarbon content in samples calculated as equivalent methane content.It features high sensitivity, a wide range, a detection limit of 0.1ppm, insensitivity to operating conditions and good stability.
Trace Nitrogen AnalyzerIn
The quality control of argon or helium, the detection of trace nitrogen (N₂) is crucial, which is directly related to the quality determination of the gas. The PC2001 model has become a new benchmark for trace nitrogen measurement with its advanced emission spectroscopy technology, capable of continuously and accurately analyzing the nitrogen content in gases.
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Innovative Technology, Best Serve for You

Oxygen Analyzers
Trace detection is simpler, faster and more accurate, fully meeting the precise needs of multiple industries (semiconductor, SMT, petrochemical, etc.). The full range offers explosion-proof/portable options, ensuring stability and reliability in complex working conditions.
Moisture Analyzers (Dew Point Meters)
Accurate dew point measurements down to very low levels (as low as - 120℃Td)Dew point meters, sensors and transmitters for quality control, production and in-process control of many industries, such as pharmaceutical, chemical, plastics, and the food and beverage industries.
Thermal Conductivity Analyzers
By accurately capturing the differences in thermal conductivity of gases, it achieves high-precision measurement of components and concentrations. It can easily handle both single gases such as hydrogen and helium, as well as binary and multi-component mixed gases.
Tunable Diode Laser (TDL) Continuous Process Gas Analyzer
The characteristic feature is that the physical measurement occurs directly in the process gas line. The diode laser PC6500/PC68 records the process data without contact and in real time, even under extreme conditions.
Gas Chromatograph (GC) FID \ PDHID \ PED \ TCD
High-efficiency chromatographic separation with a detection limit as low as 5ppb, making it your first choice for gas impurity analysis!Online monitoring enables real-time and precise control in petrochemical, metallurgical, industrial gas and other fields, escorting production.
Mass Flow Meters
Versatile flowmeter with detection of wet steam conditions and best-in-class accuracyThe flowmeter for cost-effective measurement and easy monitoring of utility gases
Infrared Analyzers
Diversified enhanced infrared analyzers can accurately adapt to users' various gas detection application scenarios. A rich variety of enhanced infrared analysis modules can accurately measure dozens of gases. Combined with modules of different specifications and performances, customized combination solutions can be provided for customers to meet differentiated detection needs.
Gas Chromatographs FID
FID total hydrocarbon analyzers are used to measure the hydrocarbon content in samples calculated as equivalent methane content.It features high sensitivity, a wide range, a detection limit of 0.1ppm, insensitivity to operating conditions and good stability.
Trace Nitrogen AnalyzerIn
The quality control of argon or helium, the detection of trace nitrogen (N₂) is crucial, which is directly related to the quality determination of the gas. The PC2001 model has become a new benchmark for trace nitrogen measurement with its advanced emission spectroscopy technology, capable of continuously and accurately analyzing the nitrogen content in gases.
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who we are

Professional Manufacturer of Gas Analysis Instruments
We are a Gas Analyzer Manufacturer of Gas Analyzer instruments. While continuously deepening our roots in the industry, we are actively expanding globally and are your trustworthy Gas Analyzer experts!
Founded in 2004, CHANG AI Gas Analyzer Supplier is a world-leading high-tech enterprise in Gas Analyzer and detection, committed to providing customers with world-class Gas Analyzer and detection products and one-stop solutions. We have fully built a diversified ecosystem of "innovative R&D + lean manufacturing + full-process in-depth integration", and deeply laid out key links of the industrial chain, such as sensors, instruments, and meters, and system integration solutions.
20+
Industry experience
Implemented projects
Factory area
Product models
70+
Patent certification
Units sold annually
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Gas Analyzer Supplier

customer service

Your Exclusive Gas Analyzer Partner

CHANG AI, as a trusted Gas Analyzer Manufacturer,  deeply understands your challenges in customization, delivery, and on-site support. Therefore, we not only provide products but also build a seamlessly connected cooperative partnership, supporting the success of your projects with efficient and reliable guarantees.
1
Solution Consulting | Pre-Design Empowerment
We offer free application analysis and integrated solution design, optimize system performance from the source, help you save costs and avoid risks.
2
Flexible Customization | 15-60 Day Response Cycle
Whether it's parameter fine-tuning or overall system customization, we can respond flexibly and accurately match your unique needs.
3
Delivery Guarantee | Project Priority Channel
Partners enjoy exclusive production scheduling priority, lock in production capacity, guarantee supply, and ensure your projects progress on schedule.
4
Full-Process Support | Remote Instant Response
Our technical team can directly serve your end customers, providing worry-free support from installation and commissioning to troubleshooting throughout the entire process.
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Free Services

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Please share your ideas with us, so that we can provide professional suggestions on Gas Analyzer equipment to meet your project needs.

  Low Minimum Order Quantity       Solution Optimization       Technical Guidance       Multi-Industry Coverage

Choose Us

It's Not Just About Choosing a Product, But a Partner Who Understands and Supports You

R&D Innovation
Supply Chain Strength
Production Capacity
Quality Control
R&D Innovation
Taking Technology as the Core and Setting Benchmarks for the Industry
We own more than 20 invention patents, hundreds of utility model and appearance patents. With 20 years of independent R&D, we have developed 6 core technologies, continuously driving product iteration and technological upgrading.
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CHANG AI Gas Analyzer Manufacturer Supply Chain Strength
Standardized System, Agile Gesponse
We have built a digital supply chain system and adopted an intelligent manufacturing system for full-process data-driven management, enabling us to respond to customers agilely and continuously reduce costs while improving efficiency.
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Production Capacity
Standards as Benchmarks, Customization with Efficiency
Mass production lines and custom production lines operate in parallel. The efficiency of mass production lines has been increased by over 30%, ensuring consistent performance and excellent quality from standard products to customized solutions.
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CHANG AI Gas Analyzer Manufacturer Quality Control
Full-Process Control, Ultimate Quality
Based on ISO 9001, we integrate international standards such as SIL2 and CE explosion-proof certification. Product quality remains consistent, continuously meeting and exceeding the stringent requirements of global high-end markets.
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Core Technologies
Six Core Technologies Mastered Independently
We have built a comprehensive underlying technology ecosystem in the industry, providing solid and reliable one-stop gas analysis solutions for complex applications.
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Electrochemical Technology
ElectroSense —— Unlocking the Precise Language of the Gas World with the Key of Electrochemistry
In the invisible battlefield of industrial safety and environmental monitoring, every fluctuation in gas concentration is crucial to the balance of life and ecology. As a deep cultivator of electrochemical sensing technology, we take the name「ElectroSense」, transforming electrochemical principles into precise gas analysis solutions, and building an invisible protective network for global industrial safety, environmental monitoring and process control.
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Optical Technology
Taking Light as a Ruler to Measure the Molecular Fingerprints of the Gas World, Making Every Beam of Light a Ruler of Safety. Over the years, we have deeply cultivated the field of gas analysis, and through numerous project practices and technological research processes, we have gained profound insights: traditional gas analysis technologies are gradually becoming inadequate, with frequent pain points emerging. As an industry pioneer, we have always upheld the core philosophy of "Precision, Stability, Intelligence" and turned our exploratory gaze to optical technologies. After unremitting efforts and continuous breakthroughs, we have found the key to solving industry pain points — safeguarding lifelines and the green sustainability of the ecological environment at the speed of light, and defining new standards for industrial safety with molecular-level precision.
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Separation Technology
Chromatography Technology Innovation: Breaking the Boundaries of Efficiency and Precision in Analysis and Detection. Gas Chromatograph: A silent efficiency revolution is underway in global laboratory and industrial testing fields — chromatography analysis technology acts as the "invisible guardian" of quality control. With chromatography technology at our core, we are charging towards a future of higher efficiency, greater stability, more diversity, and higher precision, addressing the constraint of insufficient equipment adaptability that limits cross-border applications from laboratories to production lines, and from environmental monitoring to biomedicine. From efficiency to precision, from stability to diversity — we do more than solve pain points; we are redefining the possibilities of chromatography technology.
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Microelectronics Technology
Every nanoscale breakthrough in microelectronic sensing technology is redefining the way humans converse with machines, and nature with cities. It is not only a "microscope" for industrial perception, but also a "catalyst" for the evolution of civilization — carrying greater missions in smaller volumes and driving a more sustainable future with more precise perception. We are witnessing the quiet arrival of a new era of "perceiving all things and intelligently connecting the globe".
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Fluid Technology
When industrial processes march toward the goal of "zero error", mass flow meters are no longer isolated measuring components, but system solutions integrating materials science, fluid mechanics and digital technology. We continuously break through the boundaries of measurement accuracy and reliability, providing full-dimensional flow measurement solutions from micro-flow to high-pressure flow, and from single measurement to intelligent management and control for heavy industries such as chemical industry, energy and environmental protection, helping customers establish a decisive advantage in the dual tracks of quality competition and safety management.
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Sample Pretreatment Technology
The Invisible Line of Defense for Precise Measurement in Industrial Processes: How Pretreatment Systems Reconstruct Analytical Reliability. When industrial measurement upgrades from the standard of pursuing "availability" to the realm of "reliability", pretreatment systems are quietly emerging as a key link. In the complex scenarios of heavy industries such as chemical engineering, energy, and environmental protection, the accuracy of process analysis is highly dependent on the quality of sample processing. We deeply recognize the importance of sample processing for analytical work, therefore, we focus on in-depth research on sample processing technologies, strive to break through traditional limitations, and tailor diverse sample processing solutions for different industrial scenarios.
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our cases
Why Customers Love CHANG AI
Having deeply cultivated the field of Gas Analyzer for more than 20 years, we serve over 20 core industries worldwide and have accumulated more than 1000+ successful cases. In the name of "partner", we provide you with full-life-cycle technical support to ensure continuous and stable operation, and win long-term trust with our strength.
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join us
Become a Distributor

Join hands with a trustworthy technology partner to expand your business territory.What you need is not just products, but a strong backing to help enhance your local service capabilities and win high-value projects.

1
Comprehensive Technical Empowerment
In-depth product training, troubleshooting guides, and advanced application support help you calmly respond to complex customer needs.
2
Localized Marketing and Sales Materials
Provide ready-to-use product catalogs, case studies, and demonstration videos customized for your market, helping to accurately position solutions and accelerate the sales cycle.
3
Joint Technical Support Model
In key projects, we provide you with solid backing through remote support and on-site technical assistance when necessary.
4
Steady Win-Win and Sustained Collaboration
We provide a clear partnership framework and stable collaboration model, committed to building long-term, stable, and mutually trusting relationships with you to achieve sustainable business development together.
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Latest News
Learn More About What You Need to Know
At Chang ai, your trusted Gas Analyzer manufacturer and supplier, you can find products and technical information suitable for you, as well as our latest updates.
Changai Participated In The 26th China International Gas Technology, Equipment And Application Exhibition
From June 18 to 20, 2025, the 26th China International Gas Technology, Equipment and Application Exhibition (IG CHINA 2025) was held at the Hangzhou Convention and Exhibition Center. As the first professional exhibition in China's gas field to obtain UFI international certification, this industry event with the theme of "Intelligent Navigation, Gas-to-Win-Win" brought together the top forces of the global gas industry in an exhibition area of 30,000 square meters.
2025 06 24
Changai Participated In The 2025 China International Gas Industry Expo
China International Gas Industry ExpoThe highly anticipated 2025 International Gas Industry Expo (2025 Gas Expo) and 2025 Hydrogen Energy Technology and Equipment Conference were held at Taihu International Expo Center in Wuxi, Jiangsu from April 16 to 18, 2025. As one of the most influential indust...
2025 04 22
Changai Participated In Ciepec 2025
The 23rd China International Environmental Protection ExhibitionThe 23rd China International Environmental Protection Exhibition (CIEPEC 2025) was held at the China International Exhibition Center (Chaoyang Pavilion) in Beijing from April 10 to 12. This exhibition closely revolves around the dual ca...
2025 04 15
Changai Participated In The 4th China International Hydrogen Energy And Fuel Cell Industry Exhibition
Chang Ai Participated In CihcThe 4th China International Hydrogen Energy & Fuel Cells Expo (English: The 4th Hydrogen Energy & Fuel Cells Expo China, Chinese abbreviation "China Hydrogen Energy Expo") will be held at the Beijing National Convention Center from March 26 to 28, 2025....
2025 04 01
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Let's Discuss Your Needs
Our trade account manager team will provide you with seamless full-process assistance, from quotation to delivery, covering every link of project implementation. Professional trade consultants are at your service at any time.
CHANG AI is a world-leading high-tech enterprise in gas analysis and detection, committed to providing customers with world-class gas analysis and detection products and one-stop solutions.
Contact Information
Fax: +86-21-33275656
Tel: +86-21-51692285 / +86-21 400 700 8817
Add: No.97, Qibao WanKe International Center, Lane 1333, Xinlong Road, Minhang District, Shanghai, P.R. China. 201101
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