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二乙烯基苯C6H4(CHCH2)2气体检测管158S DIVINYL BENZENE 5-50ppm， 在冬季和夏季使用检测管，会有什么影响吗？基本上检测管在0-40度之间使用是不会有影响的。请参考各检测管使用说明书。“SEI"认证是什么？“安全设备学会Safety Equipment Institute(SEI)"—上Z为严格的认证之一
更新时间：2023-05-24
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二乙烯基苯C6H4（CHCH2）2气体检测管158S DIVINYL BENZENE 5-50ppm
Tube 58S
1. PERFORMANCE
1） Measuring range ：5-300 ppm 2.5-150 ppm
Number of pump strokes 1（100ml） 2（200ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.5 ppm（200ml）
4） Shelf life ：3 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.：15％ RSD-high : 10％
3. CHEMICAL REACTION
A polymer of Styrene is produced by sulphuric acid.
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
300
250
200
150
100
50
20
5
ppm
GAS To pump
158S STYRENE
Substance ppm Interference ppm Coexistence
Acrylonitrile FIG.1 Tafhfeec atecdc.uracy of readings is not 400 Lower readings are given.
Butadiene 3 Similar stain is produced. 5 Uneven discolouration is produced
FIG.2 and higher readings are given.
Formaldehyde 〃15 Yellowish orange stain is produced
FIG.3 and higher readings are given.
Acetaldehyde 〃350 Similar stain is produced and
higher readings are given.
Methyl alcohol The accuracy of readings is not 0.35％ Pale discolouration is produced
affected. and higher readings are given.
Ethyl alcohol 〃0.18％ 〃
Ethyl acetate 〃700 〃
Butyl acetate 〃700 〃
（NOTE）
In case of 2 pump strokes, following formula is available for actual concentration.
Actual concentration＝1/2×Reading value.
0
200
100
Acrylonitrile Butadiene
FIG.1 Influence of Acrylonitrile Styrene indicating value 〔
ppm〕
500 1000 0
200
100
FIG.2 Influence of Butadiene
Styrene indicating value 〔ppm〕
〔ppm〕� 50 100 0
200
100
Formaldehyde
FIG.3 Influence of Formaldehyde
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