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環(huán)己烷C6H12氣體檢測管 115S CYCLOHEXANE 0.01-0.6% 檢測管為什么會(huì )有顏色變化?檢測管里面裝填的檢測試劑,比如,二氧化碳檢測管里面的白色部分,氧氣檢測管里面的黑色部分。當被檢測的氣體與試劑接觸。會(huì )發(fā)生化學(xué)反應,引起顏色變化。也就是說(shuō),一旦被檢測的氣體通過(guò)檢測管,顏色發(fā)生變化就說(shuō)明氣體的存在以及它的濃度。
更新時(shí)間:2024-07-14
在線(xiàn)留言環(huán)己烷C6H12氣體檢測管 115S CYCLOHEXANE 0.01-0.6%
1. PERFORMANCE
1) Measuring range :0.01-0.6%
Number of pump strokes 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :50 ppm
4) Shelf life :3 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Orange→Dark green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
C6H12+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
0.6
0.5
0.4
0.3
0.2
0.1
0.05
0.01
%
????
????
Tube No.
115S CYCLOHEXANE
89
Substance Interference ppm Coexistence
Benzene FIG.1 Black stain is produced. 400 Higher readings are given.
Toluene FIG.2 〃800 〃
Xylene 〃2,000 〃
Acetylene WDahrokl eg rleaeyenr. is discoloured to 〃
Ethylene Similar stain is produced. 〃
Paraffin hydrocarbons 〃〃
*In presence of Alcohols, Ketones or Esters less than 6%, the accaracy of readings is not affected.
0
0.1
0.2
0.3
0.4
Benzene〔ppm〕?
FIG.1 Influence of Benzene
Cyclohexane indicating value 〔%〕
200 400 600 0
0.1
0.2
0.3
0.4
Toluene〔ppm〕?
FIG.2 Influence of Toluene
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