Custom Gas Analysis Equipment &instruments Manufacturer

As an innovator and standard-setter in China's analytical instrumentation sector, Changai specializes in manufacturing high-performance Gas Analysis Equipment and Gas Analysis Instruments, delivering precise, reliable gas analysis and measurement solutions for global industrial processes. Leveraging six core technology platforms—electrochemistry, spectroscopy, laser (TDLAS), chromatography, thermal conductivity, and advanced sensing—we have built a comprehensive product portfolio encompassing oxygen analysis, dew point monitoring, multi-component gas analysis, online chromatography, and complete pre-treatment systems. Over 200 instrument models are widely deployed across dozens of critical industries including air separation, petrochemicals, metallurgy, semiconductors, environmental protection, energy, food, and pharmaceuticals.

Through the technical depth honed by national-level research projects, we ensure exceptional stability and accuracy in complex operating conditions such as high temperatures, high pressures, and high dust environments. From laboratories to production lines, Chang'ai safeguards process safety, enhances energy efficiency, and ensures product quality with innovative technology and reliable quality, committed to being your trusted analytical measurement partner.

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Modern CI-EM601 Portable diffused single gas detector

Single gas detection, optional concentration unit:ppm, umol/mol,mg/3,%VOL,%LEL,pphm,ppb, etc.;Aterproof, dustproof, explosion-proof, anti-vibration, intrinsically safe circuit design, anti-static, anti-electromagnetic radiation interference;

Custom CI-EM604 Portable diffused 4-in-1 gas detector

The corresponding sensor can be selected to detect 6 factors at the same time (1-4 gas concentrations + temperature and humidity), and the specific detection type depends on the internal sensor configuration of the instrument;

Wholesale CI-EM604-1 Portable 4-in-1 gas detector

It can detect 1~4 kinds of factors (including gas concentration, temperature and humidity, particulate matter, pressure difference, wind speed, etc.) at the same time, and the specific detection type depends on the internal sensor configuration of the instrument;

High quality CI-EM605 Portable 5-in-1 gas detector

It can detect 1~7 kinds of factors (including gas concentration, temperature and humidity, particulate matter, pressure difference, wind speed, etc.) at the same time, and the specific detection type depends on the sensor configuration inside the instrument;

Reliable CI-EM606 Portable 6-in-1 gas detector

It can detect 1~8 kinds of factors at the same time, and the specific detection type depends on the internal sensor configuration of the instrument;

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

E-mail: info@changai.com / ana@changai.com

Add: No.97, Qibao WanKe International Center, Lane 1333, Xinlong Road, Minhang District, Shanghai, P.R. China. 201101