二氯甲烷CH2Cl2氣體檢測管180S Dichloromethane 10-1000ppm

Tube No.
180S
1. PERFORMANCE
1） Measuring range ：30-1,000 ppm 10-200 ppm
Number of pump strokes 2（200ml） 4（400ml）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：5 ppm（400ml）
4） Shelf life ：2 years（Necessary to store in a refrigerated place ; 0～10℃）
5） Operating temperature ：5～40℃
6） Temperature compensation ：Necessary（See "TEMPERATURE CORRECTION TABLE"）
7） Reading ：Direct reading from the scale calibrated by 2 pump strokes
8） Colour change ：White→Reddish orange
2. RELATIVE STANDARD DEVIATION
RSD-low：15％　RSD-mid.：15％　RSD-high：15％
3. CHEMICAL REACTION
Chlorine is produced an Oxidizer. By reacting between this Chlorine and o-Toluidine, Orthoquinone is produced.
CH3OCI3＋CrO3＋H2SO4→CI2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
????
GAS To pump
DETECTOR TUBE
（Olive）
PRETREAT TUBE
1000
800
500
400
200
100
30
ppm
200ml
180S DICHLOROMETHANE
Substance Interference Coexistence
Halogens or Halogenated hydrocarbons Similar stain is produced. Higher readings are given.
FIG.1
（NOTE）
When the concentration is below 200 ppm, 4 pump strokes can be used to determine the lower concentration
Following formula is available for the actual concentration.
Actual concentration＝1/3×Temperature corrected value.
0
200
400
600
800
1000
Chlorine〔ppm〕?
FIG.1 Influence of Chlorine