High-Precision Oxygen Analyzer Manufacturer & Supplier

At CHANG AI, your trusted Oxygen Analyzer Manufacturer and Oxygen Analyzer Suppliers, our oxygen analyzers range from trace electrochemical sensors to high-range paramagnetic units, suitable for semiconductors, petrochemicals, and medical gas systems. Our strength lies in engineering exceptional stability into every device—whether you’re measuring ppb-level oxygen in ultra-pure nitrogen or optimizing combustion in steel mills, our analyzers deliver lab-accurate readings that remain steady in extreme heat or dust. We don’t just sell hardware; we provide end-to-end support: pre-sales calibration guidance, remote installation assistance, and 24/7 remote troubleshooting. Many clients stay with us for years, not just for reliable hardware, but because we treat their operational challenges as our own.

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High quality CI-PC90 Trace oxygen analyzer

Using long life 240×128 LCD screen, the display content is intuitive and rich;

Reliable CI-PC91 Trace oxygen analyzer

With overpressure protection, when the pressure in the gas path exceeds the pressure protection range, auto-matically cut oﬀ the gas path on both sides of the sensor chamber;

Top CI-PC96/PC961 Trace oxygen analyzer

Using digital sensors, not only convenient for users to replace on site, but also without calibration can be accurately measured;

Custom CI-PC99 Trace oxygen analyzer

High precision automatic temperature and pressure

Industrial-grade GNL-6800 Wide area oxygen analyzer

Meet the measurement accuracy requirements in the range of 1ppm-25%;

Wholesale GNL-6900 Wide area oxygen analyzer

The invention integrates the digital proportional valve with the patent of Changai, and has all functions and characteristics of the oxygen analyzer and the digital proportional valve;

Best CI-PC129 Trace oxygen analyzer

According to the test oxygen concentration and concentration control requirements, the analyzer adjusts the opening of the digital proportional valve, so as to control the process nitrogen charging flow, in order to obtain and maintain the oxygen concentration range required by the test condition.

Reliable CI-PC95-1 Explosion-proof trace oxygen analyzer

Microprocessor as the core, good long-term stability, high reliability;

High quality CI-PC95-2 Explosion-proof trace oxygen analyzer

The combination of microcontroller and digital processing technology, anti-cross interference, stable and reliable;

Brand GNL-B5/CI-PC981 Trace oxygen transmitter

Adopt the world’s advanced level of fuel cell oxygen sensor

High quality CI-PC98-1/2/3 Series oxygen transmitter

opt long life 128×64LCD screen, the display content is intuitive and rich;

Wholesale CI-PC986 Wide area oxygen transmitter

Meet the measurement accuracy requirements in the range of 1ppm~25%;

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