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二氧化硫SO2氣體測毒管103SC SULPHUR DIOXIDE 20-300ppm,氣體檢測管是利用填充在玻璃管中的檢測劑與被測氣體發(fā)生化學(xué)反應(yīng)而發(fā)生顏色變化,通過觀察變色層的長度,得到被測氣體的濃度。在一定直徑的玻璃管內(nèi)緊密地裝填檢測劑,將兩端燒封,然后在玻璃管表面印制表示濃度的刻度,就制成了一支檢測管。檢測劑通過在硅膠或氧化鋁等物質(zhì)表面附著顯色試劑的方法所制成的。顯色試劑遇到被測氣體時(shí),會發(fā)生特定反應(yīng),產(chǎn)生變色,這種檢測試劑具有相當(dāng)?shù)姆€(wěn)定性。
更新時(shí)間:2024-11-20
在線留言二氧化硫SO2氣體測毒管103SC SULPHUR DIOXIDE 20-300ppm
Tube 03SC
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
上一篇:103SB二氧化硫SO2氣體檢知管103SB SULPHUR DIOXIDE 0.02-0.3%
下一篇:103SD二氧化硫SO2氣體檢測管式檢測儀103SD SULPHUR DIOXIDE 1-60ppm
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