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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