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CHANG AI Technology · Process Analysis and Gas Detection Full-Scenario Solution Manual
As a national standard drafter and an internationally compliant certified enterprise, CHANG AI has been deeply engaged in the gas analysis field for nearly 20 years. This manual collects more than 100 core products in 8 series, covering the entire chain of equipment such as process analysis complete sets of systems, gas analyzers, and analysis cabins. Relying on more than 20 patented technologies and diverse detection solutions such as TDLAS laser and electrochemistry, it is widely applicable to dozens of industries including petrochemical, nuclear power, metallurgy, and environmental protection. It not only provides standardized products but also supports customized system integration, offering global customers one-stop and reliable services from technical selection to on-site implementation.
CHANG AI Portable & Online Gas Detection Alarm Selection Guide
Focusing on the core needs of industrial safety detection, this manual integrates the entire product line of CI-EM series portable (1-6 in 1) and online gas detection alarms. Equipped with high-precision detection principles such as electrochemistry and infrared, the products have core advantages including explosion-proof, waterproof and dustproof, low power consumption, and data storage. They can accurately detect more than 500 types of gases such as CO, H₂S, O₂, and VOCs, suitable for multiple scenarios such as confined spaces, pipeline inspections, and environmental monitoring. With a measurement accuracy of ≤±2% and a fast response of T90≤30s, it builds a solid safety barrier for industries such as petroleum, chemical, pharmaceutical, and gas.
CHANG AI Core Technology · CI-PC66 In-situ Laser Gas Analyzer Special Manual
Focusing on CHANG AI's independently developed TDL laser core technology, this manual deeply analyzes the technical principles, product advantages, and industrial applications of the CI-PC66 series in-situ laser gas analyzers. Adopting a single-end reflective design, the product does not require sampling pretreatment and can directly measure multi-component gases such as O₂, CO, and NH₃. It can withstand harsh working conditions such as high temperature, high dust, and strong corrosion, with a response speed of up to 2 seconds. Widely used in process control and environmental monitoring in industries such as petrochemical, iron and steel, and electric power, it helps customers reduce costs, increase efficiency, and meet compliance standards with its characteristics of no cross-interference, maintenance-free, and high stability.
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test principleThe humidity measuring instrument can be divided into cold mirror type, fully absorption electrolysis type, Al2O3 capacitance type, thin film capacitance type, resistance type, dry wet ball type and mechanical type. Among them, the fully absorption electrolytic micro-water meter and Al...
2020 05 20
In the conventional monitoring of flue gas emission, flue gas humidity is an important parameter, and it is also the most difficult to measure accurately. Humidity measurement itself is affected by other factors (atmospheric pressure, temperature), flue gas humidity measurement also needs to face hi...
2020 04 17
Introduction and application development of flue gas online high temperature and humidity analyzerForewordThe measurement of flue gas humidity in the exhaust gas of fixed pollution source is mainly to obtain dry-based oxygen content to calculate the actual content of flue gas and gaseous pollution e...
2020 04 17
1. Cold mirror dew point meterGases with different water content will come to the surface at different temperatures. The dew point is directly displayed by the photoelectric detection technology, which detects the dew layer and measures the temperature when the dew is exposed. The methods of mirror...
2020 04 16
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The company is committed to providing and one-sA diversified ecosystem has been established around innovative R&D, lean manufacturing, and end-to-end deep integration, with strategic capabilities across key segments of the value chain, including sensor technologies, instrumentation, and system integration solutions. Operations are managed under a quality management system aligned with ISO 9001, covering design and development, manufacturing, installation, and service. top solutions for customers worldwide.

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How do trace oxygen transmitters enhance industrial safety standards?
Industrial safety standards are the cornerstone of protecting personnel, equipment, and the environment in manufacturing, processing, and energy production facilities. These standards mandate rigorous control of hazardous conditions, including the monitoring of gas concentrations that can lead to fires, explosions, chemical reactions, or health hazards.
2026 01 08
Which environments require high-precision trace oxygen transmitters?
Trace oxygen transmitters are critical instruments designed to measure oxygen concentrations at extremely low levels, typically ranging from parts per million (ppm) to parts per billion (ppb). In contrast to standard oxygen sensors, high-precision trace oxygen transmitters offer unparalleled accuracy, stability, and sensitivity, making them indispensable in environments where even minute variations in oxygen levels can have catastrophic consequences—including safety hazards, product spoilage, equipment damage, or non-compliance with industry regulations.
2026 01 01
How to troubleshoot common malfunctions in trace oxygen analyzers?
Trace oxygen analyzers are critical instruments widely used in industries such as petrochemicals, pharmaceuticals, food packaging, and electronics manufacturing. They are designed to measure extremely low concentrations of oxygen (typically in the range of ppb to ppm levels), providing essential data for ensuring product quality, optimizing production processes, and maintaining operational safety.
2025 12 25
What are the key features to look for in a portable oxygen analyzer?
Portable oxygen analyzers have become indispensable tools across a diverse range of industries and applications, from industrial safety and mining operations to medical emergencies, high-altitude adventures, and laboratory research.
2025 12 18
Why Is Trace Oxygen Analyzer Critical for Food Packaging Industry?
The global food packaging industry stands at the intersection of food safety, consumer health, and supply chain efficiency. With an estimated market value exceeding $400 billion in 2024, it bears the immense responsibility of ensuring that food products—from fresh produce and dairy to processed meats and baked goods—reach consumers in safe, palatable condition.
2025 12 11
How to calibrate area oxygen analyzer for accuracy?
In industrial environments such as chemical plants, oil refineries, and confined space operations, area oxygen analyzers play a critical role as "safety sentinels." Their accurate measurement of ambient oxygen concentration is directly related to the life safety of on-site personnel and the stable operation of production processes. However, even high-performance analyzers will experience measurement drift over time due to factors such as sensor aging, environmental interference, and mechanical vibration.
2025 12 04
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We are a manufacturer of gas analysis instruments. While continuously deepening our roots in the industry, we are actively expanding globally and are your trustworthy gas analysis experts! Founded in 2004, 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. We have fully built a diversified ecosystem of "innovative R&D + lean manufacturing + full-process in-depth integration", and deeply layout key links of the industrial chain such as sensors, instruments and meters, and system integration solutions.
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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.
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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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