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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>103SC二氧化硫SO2气体测毒管103SC SULPHUR DIOXIDE 20-300ppm

二氧化硫SO2气体测毒管103SC SULPHUR DIOXIDE 20-300ppm

简要描述:

二氧化硫SO2气体测毒管103SC SULPHUR DIOXIDE 20-300ppm,气体检测管是利用填充在玻璃管中的检测剂与被测气体发生化学反应而发生颜色变化,通过观察变色层的长度,得到被测气体的浓度。在一定直径的玻璃管内紧密地装填检测剂,将两端烧封,然后在玻璃管表面印制表示浓度的刻度,就制成了一支检测管。检测剂通过在硅胶或氧化铝等物质表面附着显色试剂的方法所制成的。显色试剂遇到被测气体时,会发生特定反应,产生变色,这种检测试剂具有相当的稳定性。

更新时间:2015-10-24

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二氧化硫SO2气体测毒管103SC SULPHUR DIOXIDE 20-300ppm

二氧化硫SO2气体测毒管103SC SULPHUR DIOXIDE 20-300ppm

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

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