Vạch chỉ thị: 1 ~ 14 ppm
Thang đo:
+ 0.2 ~ 0.5 ppm, bơm 2 lần
+0.5 ~ 14 ppm , bơm 1 lần
+ 14 ~ 35 ppm, bơm 1/2 lần
Thời gian lấy mẫu: 30 giây mỗi lần bơm
Chuyển đổi màu: hồng sang vàng
Phương trình phản ứng: C5H5N + H2SO4 → C5H5N - H2SO4
Hệ số biến đổi: 10% (0.5 ~ 4 ppm), 5% (4 ~ 14 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.2 to 0.5 ppm |
(0.5) to 14 ppm |
14 to 35 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
30 seconds per pump stroke |
| Detecting Limit |
0.1 ppm (n=2) |
| Colour Change |
Pink → Yellow |
| Reaction Principle |
C5H5N + H2SO4 → C5H5N - H2SO4 |
| Coefficient of Variation |
10% (for 0.5 to 4 ppm), 5% (for 4 to 14 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Aromatic amines |
|
+ |
Yellow |
| Aliphatic amines |
|
+ |
Yellow |
| Ammomia |
|
+ |
Yellow |
| Hydrazine |
|
+ |
Yellow |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| 4-Methyl pyridine |
0.75 |
1 |
0.38 to 10.5 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 1 ppm(2014) |
- |
1.8 to 12.4 % |
