Vạch chỉ thị: 10 ~ 100 ppm
Thang đo:
+ 2.5 ~ 5 ppm, bơm 8 lần
+ 5 ~ 100 ppm, bơm 4 lần
Thời gian lấy mẫu: 3 phút mỗi lần bơm
Chuyển đổi màu: Pale yellow → White
Phương trình phản ứng: CH2:CHCH:CH2 + (NH4)2MoO4 + PdSO4 → White product
Hệ số biến đổi: 10% (5 ~ 20 ppm), 5% (20 ~ 100 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 2.5 to 5 ppm |
5 to 100 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
3 minutes per pump stroke |
| Detecting Limit |
0.5 ppm (n=8) |
| Colour Change |
Pale yellow → White |
| Reaction Principle |
CH2:CHCH:CH2 + (NH4)2MoO4 + PdSO4 → White product |
| Coefficient of Variation |
10% (for 5 to 20 ppm), 5% (for 20 to 100 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 |
| Acetylene, Hydrogen cyanide |
|
+ |
White |
| Carbon monoxide, Hydrogen |
|
+ |
Blue (whole layer) |
| Hydrogen chloride |
|
+ |
Pink |
| Hydrogen sulphide |
|
+ |
Black |
| Ethylene, Propylene, Butylene |
|
+ |
Blue |
| Butane, Pentane |
|
+ |
Blue (whole layer) |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| 1,3-Pentadiene |
8.5 |
4 |
42.5 to 850 ppm |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 2 ppm(2014) |
- |
2.0 to 12% |
