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氧气O2气体检测管159SA OXYGEN 2-24%，体外缺氧：主要是因为外部原因造成的缺氧。人处在一个缺少氧气的环境里，如阴天气压低，高原地区，环境污染地区以及写字楼、商场、地下室等都容易造成体外缺氧。体内缺氧：是指人体自身的原因，导致吸入氧气的不足，与一些老年病、工作节奏快等原因有关。如呼吸系统疾病（气管炎、哮喘）；血液循环不好（各种心脏疾病，脑供血不足、脑梗、脉管炎、静脉曲张等）。长期处于体内缺氧状态，人体各个组织供氧不足，加速了身体的衰竭，甚至引发中风等意外，直接威胁到生命的安全。
更新时间：2024-04-24
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氧气O2气体检测管159SA OXYGEN 2-24%
1. PERFORMANCE
1） Measuring range ：2-24％
Number of pump strokes 1/2（50ml）
2） Sampling time ：2 minutes/1/2 pump stroke
3） Shelf life ：2 years
4） Operating temperature ：0～40℃
5） Reading ：Direct reading from the scale calibrated by 1 /2 pump stroke
6） Colour change ：White→Brown
2. RELATIVE STANDARD DEVIATION
RSD-low：5％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
Oxygen reacts with alkaline pyrogallol.
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
2
6
9
12
15
18
21
24
%
50ml
GAS To pump
TEMPERA TURE
INDICATOR
Tube No.
159SA,SB OXYGEN
Substance Interference ppm Coexistence
Hydrogen sulphide 2％ Higher readings are given.
Nitrogen dioxide 2％ 〃
Sulphur dioxide Similar stain is produced. 2％ 〃
Carbon dioxide 〃5％ 〃
6.NOTE
1）Coexistence of more than 5％of Carbon dioxide（CO2）gives higher reading and the reading from the scale
should be corrected with the following correction table.
2）The 59SA and SB tubes are necessary to heat the part of the temperature indicator until the indicator
discolours from Red to Purple first. In case of 59SA , it is necessary to use direct flame such as a match
or lighter to heat it up a non-hazardous area.59SB consists of a thin aluminum belt rolled on the indicator
and chemical liquid in a small bottle. When the liquid is dropped on the aluminum fully, a chemical reaction
occurs with generating smoke and temperature comes high. There, the 59SB is possible to use in a
hazardous area.
CO2 CORRECTION TABLE
Scale True Concentration （％）
Readings CO2 CO2 CO2 CO2
（％） 5％ 10％ 15％ 20％
2 2.0 － － －
6 6.0 2.5 － －
9 9.0 6.4 － －
12 12.0 10.0 7.0 6.0
15 15.0 12.8 10.0 7.8
18 18.0 16.0 14.0 12.1
21 21.0 19.0 16.6 14.4
24 24.0 21.2 19.6 17.9
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