1,1-二氯乙烷CH3CHCl2氣體檢測管1,1-Dichloroethane 235SA 1,1- 10-160ppm

Tube No.235SA

1. PERFORMANCE
1） Measuring range ：10-160 ppm
Number of pump strokes 1（100mr）
2） Sampling time ：2 minutes/1 pump stroke
3） Detectable limit ：3 ppm
4） Shelf life ：1 year（Necessary to store in a refrigerated place ; 0～10℃）
5） Operating temperature ：0～40℃
6） Operating Humidity ：20-90 R.H.％
7） Temperature compensation ：Necessary（See "TEMPERATURE CORRECTION TABLE"）
8） Reading ：Direct reading from the scale calibrated by 1 pump stroke
9） Colour change ：White→Purple
2. RELATIVE STANDARD DEVIATION
RSD-low：15％　RSD-mid.：15％　RSD-high：10％
3. CHEMICAL REACTION
Chlorine is produced by decomposing with an Oxidizer.
By reacting between this Chlorine and 3, 3’-Dimethylnaphthidine,Nitroso-compound is produced.
CH3CHCI2＋CrO3＋H2SO4→CI2
CI2＋3, 3’-Dimethylnaphthidine→Nitroso-compound
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
????
GAS ???? To pump
DETECTOR TUBE
（Olive）
PRETREAT TUBE
160
140
120
100
80
60
40
20
10
ppm
100ml
235S 1,1-DICHLOROETHANE
Substance Interference ppm Coexistence
Nitrogen oxides Similar stain is produced. Higher readings are given.
Halogens 〃〃
Halogenated hydrocarbons 〃〃
Alcohols Tafhfeec atecdc.uracy of readings is not 400 Lower readings are given.
Hexane FIG.1 〃20 〃
Toluene FIG.2 〃20 〃
0
100
200
Hexane〔ppm〕?
FIG.1 Influence of Hexane
1,1-Dichloroethane indicating value 〔ppm〕
50 100 0
100
200
Toluene〔ppm〕?
FIG.2 Influence of Toluene