丙烯酸乙酯CH2=CHCO2C2H5氣體檢測管211U ETHYL ACRYLATE 5-60ppm

Tube No.211U
1. PERFORMANCE
1） Measuring range ：5-60 ppm
Number of pump strokes 2（200ml）
2） Sampling time ：3 minutes/2 pump strokes
3） Detectable limit ：0.5 ppm
4） Shelf life : ：2 years
5） Operating temperature ：0～40℃
6） Temperature compensation ：Necessary（See "TEMPERATURE CORRECTION TABLE"）
7） Reading ：Graduations printed on the tube are calibrated by Methyl acrylate at 2 pump strokes
and Ethyl acrylate concentration is determined by using a conversion chart.
8） Colour change ：Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low：15％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH2＝CHCO2CH2CH3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
60
40
20
10
5
ppm
200ml
DEHUMIDIFIER
（White）
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211U C ETHYL ACRYLATE
TEMPERATURE CORRECTION TABLE
Scale True Concentration （ppm）
Readings 0℃ 10℃ 20℃ 30℃ 40℃
（ppm） （32°F） （50°F） （68°F） （86°F） （104°F）
60 80 70 60 52 44
40 52 46 40 34 28
20 27 23 20 17 15
10 14 12 10 9 7
5 7 6 5 4 3
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher reading are given.
Paraffin （morefi nth haynd Cro3c）arbons DWahrokl e b rreoawgne.nt is discoloured to 〃
Halogenated hydrocarbons 〃〃
Esters 〃〃
Aromatic hydrocarbons FIG.1,2 〃〃
0
20
30
10
50
60
40
80
100
90
70
Toluene〔ppm〕?
FIG.1 Influence of Toluene
Ethyl acrylate
indicating value 〔ppm〕
10 20 30 40 50 0
20
30
10
50
60
40
80
100
90
70
Hexane〔ppm〕?
FIG.2 Influence of Hexane
Ethyl acrylate
indicating value 〔ppm〕
100200300400500600700
Ethyl Acrylate（ppm）?
No.211U Tube reading（ppm）?
（200mR）?
5
10
20
40
60
5
10
20
40
60