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苯胺氣體檢測管 Aniline C6H5NH2 181S 1-30ppm,氣體檢測管是用來檢測某種氣體在某一環境中所含濃度的簡易檢測裝置,通過檢測劑與被檢測氣體的反應而出現顏色變化,來表示所測環境中的氣體濃度。在不用任何能源、電源的情況下,具有操作簡單、使用范圍廣、檢測準確、即時性強和經濟的特點。www.yd17.cn
更新時間:2024-12-18
在線留言苯胺氣體檢測管 Aniline C6H5NH2 181S 1-30ppm
Tube 81S
1. PERFORMANCE
1) Measuring range :2-30 ppm 1-15 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :0.5 minutes/1 pump stroke
3) Detectable limit :0.05 ppm(200mr)
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 :White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with p-Dimethylamino-benzaldehyde, Azomethine is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
2
5
10
15
20
25
30
ppm
100ml
GAS To pump
DEHUMIDIFIER
(White)
181S ANILINE
Substance Interference ppm Coexistence
Toluidine Similar stain is produced. Aniline conc.×1/3 Higher readings are given.
Ammonia FIG.1 Tafhfeec atecdc.uracy of readings is not Tofh Ae nsialinmee conc. 〃
Paraffin amines 〃〃
Aromatic amines 〃〃
(NOTE)
In case of 2 strokes, following formula is available for the actual concentration.
Actual concentration=1/2×Reading value.
0
50
30
20
40
10
Ammonia〔ppm〕?
FIG.1 Influence of Ammonia
Aniline indicating value 〔ppm〕
10 20 30 40 50 60
Coexistence
Interference
NH2+CHO N(CH3)2 N=CH N(CH3)2+H2O
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