當前位置:上海境宣實業有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 281S氧/二氧化碳O2,CO2氣體檢測管281S OXYGEN CARBON DIOXIDE 2-10%
室內空氣甲醛檢測管No.713 FORMALDEHYDE 0.01-0
氯乙烯CH2=CHCl氣體測毒管132SC VINYL CHLORID
氯乙烯CH2=CHCl氣體檢知管132SB VINYL CHLORID
氧/二氧化碳O2,CO2氣體檢測管281S OXYGEN CARBON DIOXIDE 2-10%(O2),1-20%(CO2)
1. PERFORMANCE
1) Measuring range:
Oxygen 2-10 %
Carbon dioxide 1-20 %
Number of pump strokes 1(100ml)
2) Sampling time :8 minutes/1 pump stroke
3) Detectable limit :0.001 %
4) Shelf life :1.5 years
5) Operating temperature :0~40℃
6) Temperature compensation:
Oxygen Necessary(See "Temperature CorrectionTable")
Carbon dioxide No temperature correction is necessary.
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change:
Oxygen White→Brown
Carbon dioxide Pink→Yellow
2. RELATIVE STANDARD DEVIATION
Oxygen RSD-low:10% RSD-mid.:10% RSD-high:10%
Carbon dioxide RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Oxygen:Oxygen reacts with alkaline pyrogallol.
Carbon dioxide:CO2+2KOH→K2CO3+H2O
4. CALIBRATION OF THE TUBE
Oxygen?Carbon dioxide STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
Ordinary combustion gases do not affect the reading value and discolouration.
5. CONCENTRATION CORRECTION
On account of interaction of indication between carbon dioxide and oxygen, the true concentration is calculated
by the following equations.
[EXANPLE]
At the measuring temperature of 30℃, when oxygen indication is 5%(temperature corrected value 5.3%)and
carbon dioxide indication is 10%, each true concentration is calculated as bellow.
Accordingly true concentration :
Carbon dioxide 9.47%
Oxygen 4.77%
OXYGEN CARBON DIOXIDE DETECTOR TUBE XYGEN DETECTOR TUBE
23456789
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4
2 1
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GAS To pump
Tube No.
281S OXYGEN?CARBON DIOXIDE
TEMPERATURE CORRECTION TABLE
Scale True Oxygen Concentration (%)
Readings 10℃ 20℃ 30℃ 40℃
(%) (50°F) (68°F) (86°F) (104°F)
10.0 9.7 10.0 10.3 10.5
9.0 8.7 9.0 9.3 9.5
8.0 7.7 8.0 8.3 8.5
7.0 6.7 7.0 7.3 7.5
6.0 5.7 6.0 6.3 6.5
5.0 4.7 5.0 5.3 5.5
4.0 3.9 4.0 4.2 4.5
3.0 2.9 3.0 3.1 3.3
2.0 2.0 2.0 2.0 2.1
CO2 %=(CO2)- 100
(O2)×(CO2) equation(1)
O2 % =(O2) - 100
(O2)×(CO2) equation(2)
CO2 %= 10 - = 10 - 0.53 = 9.47
= 5.3 - 0.53 = 4.77
100
5.3 × 10
5.3 × 10
O2 % = 5.3 - 100
Where
(CO2):indication of carbon(%)
(O2) :corrected oxygen concentration(%)
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