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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.

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.

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.