Vạch chỉ thị: 2 ~ 25 ppm
Thang đo:
+ 1 ~ 2 ppm, bơm 2 lần
+ 2 ~ 25 ppm, bơm 1 lần
+ 25 ~ 75 ppm, bơm 1/2 lần
Thời gian lấy mẫu: 45 giây mỗi lần bơm
Chuyển đổi màu: vàng sang hồng
Phương trình phản ứng: Cl2C:CCl2 + PbO2 + H2SO4 → HCl, HCl + Base → Chloride
Hệ số biến đổi: 10% (2 ~ 5 ppm), 5% (5 ~ 25 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 1 to 2 ppm |
2 to 25 ppm |
25 to 75 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
45 seconds per pump stroke |
| Detecting Limit |
0.4 ppm (n=2) |
| Colour Change |
Yellow → Pink |
| Reaction Principle |
Cl2C:CCl2 + PbO2 + H2SO4 → HCl
HCl + Base → Chloride |
| Coefficient of Variation |
10% (for 2 to 5 ppm), 5% (for 5 to 25 ppm) |
| Shelf Life |
2 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Nitric Oxide, Nitrogen dioxide |
|
No |
No |
| Hydrogen chloride, Chlorine, Bromine |
|
+ |
Pink |
| Acetone |
≦ 200 ppm |
No |
No |
| Unsaturated Halogenated HCs |
|
+ |
Pink |
| Aromatic hydrocarbons |
≧ 100 ppm |
 |
No |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Pentachloroethane |
20 |
1 |
40 to 500 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 25 ppm |
100 ppm |
- |
