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Quick Details

  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: Chang Ai
  • Model Number: CI-IN931
  • Measure Range: 0~10/100/1000/1%/25.00% O2

Packaging & Delivery

Packaging Details carton ,L*W*H=470mm*410mm*315mm
Delivery Time within 15 working days upon receipt of purchase order

CI-IN931 Portable Trace Oxygen Analyzer



CI-IN931 Portable trace oxygen analyzer adopts the electrochemical principle, can test oxygen concentration in 0~10/100/1000ppm/1%/25.00% O2



♦128 x 64 LCD screen window shows oxygen concentration, menu,data,working condition and so on, all kinds of 

data and instrument display intuitive, easy to operate

♦Using the latest touch key technology, convenient operation, key with long service life

Over-pressure protection function

Pressure compensation function

Over range protection function

Unique gas path protection 

Personalized test chamber

Menu lock switch

Mobile data storage


Technical Specifications

Measure Range: 0~10/100/1000ppm/1%/25.00% O2


Accuracy: 0-1000ppm ±2%F.S; 0-100ppm ±3%F.S; 0-10ppm 5%F.S     


Repeatability:  0-1000ppm ±1%F.S; 0-100ppm ±1.5%F.S; 0-10ppm ±2.5%F.S               


Stability:0-1000ppm ±1%F.S/7d; 0-100ppm ±1.5%F.S/7d; 0-10ppm ±2.5%F.S/7d


Response Time: T90<60s at 25 °C


Sensor Principle:Electrochemical principle


Sample Gas Pressure:35~210KPa


Sample Gas Flow:1~1.5L/min


Ambient Humidity:<80%RH


Environment Temperature:0-45°C


Gas Medium: N2,H2,He,Ar,hydrocarbon gas(If containing CO2,H2S,SO2,NOx,NH3 etc.need to state)


Signal Output:1group,4-20mA/0-20mA/0-1V/0-5V/0-10V/1-5V(SoftSpan)


Contact Capacity:240VAC,0.2A


Sensor Life: 2 years


Charging Source:85~264VAC,50/60Hz,power dissipation<20VA


Net Weight: 5KG


Appearance Dimension:305mm*270mm*144mm



·Air separation;

·Detection of gas production;

·Detection of protective gas in semiconductor industry;

·Detection of protective gas in reflow /wave soldering;

·Gas detection in food production process;

·Gas detection in petrochemical engineering;

·Carbon dioxide or nitrogen measurement in beer industry;

·Detection of inert gas and oxygen concentration in the hydrocarbon gas, etc.




Order Knowledge

l  Measure range 


l  Tested gas pressure & temperature


l  Gas composition and impurities














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