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產(chǎn)品型號126SH
品 牌
廠商性質(zhì)代理商
所 在 地上海市
更新時間:2024-11-27 16:00:51瀏覽次數(shù):1228次
聯(lián)系我時,請告知來自 化工儀器網(wǎng)室內(nèi)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
二氧化碳CO2檢測管126SH CARBON DIOXIDE 1-20%
Tube No.
1. PERFORMANCE
1) Measuring range :1-20%
Number of pump strokes 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.2%
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:5% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with alkali, PH indicator is discoloured.
CO2+2KOH→K2CO3+H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
%
12
4
6
8
10
12
14
16
18
20
GAS To pump
126SH CARBON DIOXIDE
Substance ppm Interference ppm Coexistence
Similar stain is produced,but if there
Nitrogen dioxide FIG.1 50 White stain is produced. 50 is more than 3%of CO2,the accuracy
of readings is not affected.
Sulphur dioxide FIG.2 3,000 Similar stain is produced. 3,000 Higher readings are given.
Hydrogen sulphide FIG.3 4,000 〃3,000 〃
0
10
5
Sulphur dioxide〔ppm〕?
FIG.2 Influence of Sulphur dioxide
Carbon dioxide
indicating value 〔%〕
2000 4000 6000
Coexistence
Interference
0
10
5
Nitrogen dioxide〔ppm〕?
FIG.1 Influence of Nitrogen dioxide
Carbon dioxide
indicating value 〔%〕
500 1000
Coexistence
Interference
0
10
5
Hyrogen sulphide〔ppm〕?
FIG.3 Influence of Hydrogen sulphide
Carbon dioxide
indicating value 〔%〕
2000 4000 6000
Coexistence
Interference
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