Vạch chỉ thị: 0.1 ~ 10 ppm
Thang đo:
+ 0.1 ~ 10 ppm, bơm 5 lần
+ 10 ~ 65 ppm, bơm 1 lần
Thời gian lấy mẫu: 2 phút mỗi lần bơm
Chuyển đổi màu: Trắng sang xanh lá sẫm
Phương trình phản ứng: C6H5 + I2O5→ H2S2O7 + I2
Hệ số biến đổi: 10% (0.1 ~ 3 ppm), 5% (3 ~ 10 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.1 to 10 ppm |
10 to 65 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
2 minutes per pump stroke |
| Detecting Limit |
0.05 ppm (n=5) |
| Colour Change |
White → Dark green |
| Reaction Principle |
C6H5 + I2O5→ H2S2O7 + I2 |
| Coefficient of Variation |
10% (for 0.1 to 3 ppm), 5% (for 3 to 10 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Alcohols, Ketones |
|
No |
No |
| Ethyl benzene |
 1/1 |
+ |
Dark brown |
| Xylene |
10 ppm |
+ |
Dark brown around zero point |
| Toluene |
1/1 |
+ |
Dark brown |
| Hexane |
3 ppm |
+(Unclear demarcation) |
No |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Methylene Iodide |
2.2 |
5 |
0.22 to 22 ppm |
| Methyl Iodide |
3.2 |
5 |
0.32 to 32 ppm |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.5 ppm(2014) |
2.5 ppm(2014) |
1.3 to 7.1% |
