臭氧O3气体检知管182SB OZONE 2.5-100ppm

Tube 82SB

1. PERFORMANCE
1） Measuring range ：10-100 ppm 5-50 ppm 2.5-25 ppm
Number of pump strokes 1/2（50ml） 1（100ml） 2（200ml）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：1 ppm（100ml）
4） Shelf life ：2 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：Blue→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
Indigo is oxidized and Isatin is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
5
10
20
30
40
50
ppm
GAS To pump
182SB OZONE
Substance ppm Interference Coexistence
Nitrogen dioxide 10 Similar stain is produced. The top of discoloured layer becomes
unclear and higher readings are given.
（NOTE）
1）In case of 1 / 2 pump strokes, following formula is available for actual concentration.
Actual concentration＝2 ×Reading value
2）In case of 2 pump strokes, following formula is available for actual concentration.
Actual concentration＝1/2×Reading value
C
NH
HN
C
O
＝�
O
C
＝�
＝C
C
NH
C
O
＝�
＋2O3 　� 2 ＝O＋2O2