二氧化氮氣體檢測管117SB NITROGEN DIOXIDE 0.7-42ppm

Tube No.
0 . 5
1 . 0
2 . 0
3 . 0
5 . 0
7 . 0
1 0 . 0
1 5 . 0
2 0 . 0
2 5 . 0
3 0 . 0
200ml
ppm
GAS To pump
1. PERFOMANCE
1） Measuring range ：0.5-30 ppm
Number of pump strokes 2（200ml）
2） Sampling time ：1.5 minutes/2 pump strokes
3） Detectable limit ：0.1 ppm
4） Shelf life ：1 year
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 2 pump strokes
7） Colour change ：White→Yellowish orange
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
By reacting with o-Toluidine, Nitroso-o-Toluidine（dyestuff）is produced.
4. CALIBRATION OF THE TUBE
PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
117SB NITROGEN DIOXIDE
Substance Interference ppm Coexistence
Chlorine FIG.1 Similar stain is produced. 2 Higher readings are given.
Bromine 〃2 〃
Iodine 〃2 〃
Nitrogen monoxide FIG.2 nTohte a affceccuteradc.y of readings is 15 〃
0
10
20
Chlorine〔ppm〕?
FIG.1 Influence of Chlorine
Nitrogen dioxide
indicating value 〔ppm〕
1 2 3 0
10
20
Nitrogen monoxide〔ppm〕?
FIG.2 Influence of Nitrogen monoxide