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Quick Details

  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: Chang Ai
  • Model Number: CI-IN261

Packaging & Delivery

Packaging Details carton
Delivery Time within 15 working days upon receipt of purchase order


CI-IN261 infrared gas analyzer




CI-IN261 is based on NDIR principle and adopts digital processing technology as zero point/range point calibration, linear processing, temperature compensation, switch output, flow/voltage output, parameters setting etc.




u  NDIR,sensor does not touch tested gas, sensor poisoning will not happen;

u  Good intelligence, stability, high reliability and long calibration cycle;

u  Composed of 128×64 LCD to show CO2 concentration, menu, set data and instrument working state, one piece of toughened glass is covered on the surface of screen, protecting LCD and buttons;

u  Menu lock function,

u  Latest touch key technology

u  Two-way single-pole single-throw alarm function;

u  RS485/RS232(optional)


Technical Specifications


Testing principle:NDIR testing

Range:CO 0~2%/0~100%

        CO2 0~2000ppm 0~100%

        CH4 0~4.4% 0~100%

        SF6 0~50ppm 0~1000ppm(designed in accordance with users’ requirement)

Accuracy:≤±2% FS

Repeatability:≤±1% FS                       

Stability:±1% of FS/7d

Response Time:T90<15s(500ml/min)

Power Supply:85~264VAC,50/60Hz

Ambient Temperature:0~45°C

Ambient Humidity:<90%RH

Sample Gas Pressure:95~105KPa

Sample Gas Flow:0.5~1.5L/min


Alarm Contact Capacity:240VAC,0.2A

Sensor Life:18,000 hours(normal use)

Instrument Life: >50,000 hours(normal use)

Instrument Dimension:144mm(W)×144mm(H)×295mm(D)

Measuring Medium: Ar, O2, H2 and gases have no overlapping absorption to CO2




It can be used to measure CO2 concentration in Air production and manufacturing, Gas detection in petrochemical process, marsh gas and industrial process.


Order Knowledge


l  Measure range

l  Tested gas pressure & temperature

l  Gas composition & impurities 

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