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  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: ChangAi
  • Model Number: CI400

Packaging & Delivery

Packaging Details carton
Delivery Time Within 10 working days upon receipt of purchase order


CI400 flue oxygen analyzer
0-25% O2
Limitting Current Principle
2% F.S Accuracy
Quick response


Features of the CI400 flue oxygen analyzer                                                                                                      

1  New pattern, long-life, amplified ion current tester with high sensitivity and fast response

2  High precision, automatic temperature compensation, eliminating the impact of environmental temperature

3  Checking the sensor working state automatically and unique double-line working change mode extending the sensor’s life.

4  Concise menu, simple operation

5  Connected to a printer via the standard (4-20)mA, RS232 and RS485 interfaces. 

6  Setting upper and lower alarm values freely during the measure ranges

7  No need benchmark gas.


Technical Specifications of CI400 flue oxygen analyzer                                                                                      

Measure Range:                   0-5.00%, 0-10.00%, 0-25.00% O2

Accuracy:                                 ≤±2% in FS range

Response Time:                   90% of FS reading ≤ 20 seconds

Repeatability:                          ≤1%

Stability:                                   Zero drift ≤±1% of FS/7d

Span drift ≤±1% of FS/7d

Preheating Time:                   99s

Working Temp.:                    350°C

Signal Output:                       4-20mA or 0-5V DC isolated

Contact Capacity:                 125VAC 0.3A, 110VDC 0.3A, 30VDC 1A

Power Supply:                       220±10% VAC, 50/60Hz, power loss≤10VA

Detector Length:                   0.4m, 0.6m, 0.8m, 1.0m, 1.2m, 1.5m

Ambient Temp.:                     -10°C~+45°C

Sensor Principle:                  Ion Current Sensor

Appearance Dimension:      220mm×292mm×87mm (W×H×D) (Analyzer)

Weight:                                    4kg

Installation Mode:                  Inserting detector and wall-mounting analyzer


This flue oxygen analyzer is used to continuously measure oxygen concentration in combustion gas of industrial boilers or furnaces, and is ideally suited for combustion monitoring and control.


Kind Fuels Requests Excessive Air                                                                              

Fuel type

Excessive Air

Excessive oxygen content

Natural gas



Liquid fuel









Order Knowledge

Measure range

Tested gas pressure

Gas composition and impurity

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China (Mainland) | Trading Company
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