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代理商厂商性质
上海市所在地
二氧化碳CO2气体检测管126SB CARBON DIOXIDE 0.05-1.0%
1. PERFORMANCE
1) Measuring range :0.05-1.0%
Number of pump strokes 1(100ml)
2) Sampling time :5 minutes/1 pump stroke
3) Detectable limit :50 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Purple blue→Pale pink
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high :5%
3. CHEMICAL REACTION
By reacting with alkali, PH indicator is discoloured.
CO2+2NaOH→Na2CO3+H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
%
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
GAS To pump
Tube No.
126SB CARBON DIOXIDE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (%)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(%) (32°F) (50°F) (68°F) (86°F) (104°F)
1.0 1.16 1.09 1.00 0.94 0.89
0.9 1.05 0.98 0.90 0.85 0.80
0.8 0.93 0.87 0.80 0.75 0.70
0.7 0.81 0.76 0.70 0.66 0.62
0.6 0.70 0.65 0.60 0.57 0.53
0.5 0.58 0.54 0.50 0.47 0.44
0.4 0.46 0.43 0.40 0.38 0.35
0.3 0.36 0.33 0.30 0.28 0.26
0.2 0.24 0.22 0.20 0.19 0.17
0.1 0.12 0.11 0.10 0.09 0.08
Substance ppm Interference ppm Coexistence
Chlorine 20 Pale yellowish blue stain is produced.
Sulphur dioxide 100 〃〃
Hydrogen cyanide The accuracy of readings not affected. 〃
Hydrogen sulphide 〃〃
Nitrogen dioxide 30 Pale yellowish blue stain is produced. 〃
When CO2 comcentration is more than 300 ppm,
the accuracy of readings is not affected.
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