二氧化硫SO2气体检知管103SC ,二氧化硫SO2气体检知管103SC SULPHUR DIOXIDE 20-300ppm,日本光明理化工业株式会社从1947年开始,在气体分析领域开拓了六十余年 , 形成了驰名于世的 ” 北川 ” 式气体检测管。气体快速分析法 ” 北川 ” 的历史就是日本检测管的历史 。目前是世界上*大的检测管生产厂家,也是日本**家通过美国SEI的认证,欧盟的认证的检测管厂家。公司不仅有ISO9001:2000的认证,还获得了环境管理的ISO14001的认证。北川式手动气体采集器AP-20 备有采气完成指示计 , 可以清楚的判明采气是否完成 . • 有专门截留玻璃的截留槽 , 以防止检测管割尖时玻璃片飞溅 . • 有采气容积为 50 毫升和 100 毫升的两段式制动卡 . • 采气器极为小巧 , 并有便于携带的皮具包 。
Tube No.103SC
1. PERFORMANCE
1) Measuring range :20-300 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :3 ppm
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 :Purple→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with alkali, PH indicator is discoloured.
SO2+2NaOH→Na2SO3+H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
300
250
200
150
100
50
20
ppm
SO2
GAS To pump
103SC SULPHUR DIOXIDE
Substance ppm Interference ppm Coexistence
Chlorine Similar stain is produced. SO2 FIG.1 ×2 1co/5nc. Higher readings are given.
Nitrogen dioxideFIG.2 100 Pink stain is produced. 〃〃
Hydrogen SulphFidIeG.3 SO×2 1c0o0nc. Lower readings are given.
Coexistence
Interference
0
300
200
250
100
150
50
Chlorine
FIG.1 Influence of Chlorine
Sulphur dioxide indicating value 〔ppm〕
50 100 150 200〔ppm〕? 0
300
200
250
100
150
50
Nitrogen dioxide
FIG.2 Influence of Nitrogen dioxide
Sulphur dioxide indicating value 〔ppm〕
10 20 30 40〔ppm〕? 0
300
200
250
100
150
50
Hydrogen sulfide
FIG.3 Influence of Hydrogen sulfide