Không cần dùng thêm bơm, lắp cố định trong môi trường khí cần đo
Vạch chỉ thị: 10 ~ 100 ppm
Thang đo: 1 ~ 100 ppm
Thời gian lấy mẫu: 1 đến 10 giờ
Chuyển đổi màu: vàng sang tím
Phương trình phản ứng: HF + Indicator → Purple product
Hệ số chuyển đổi: 15% (10 ~ 20 ppm-hr),10% (20 ~ 100 ppm-hr)
Số ống trong hộp: 10
Catalog
Performance
| Measuring Range |
1 to 100 ppm |
| Sampling Hours |
1 to 10 hours |
| Detecting Limit |
0.5 ppm (10 hours) |
| Colour Change |
Yellow → Purple |
| Reaction Principle |
HF + Indicator → Purple product |
| Coefficient of Variation |
15% (for 10 to 20 ppm-hr),10% (for 20 to 100 ppm-hr) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature and Humidity 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 |
| Chlorine |
≧ 1/5 |
+(Bleaches zero zone) |
Bleaches zero zone |
Hydrogen chloride
Nitric acid |
≧ 1/5 |
+ |
Purple |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
Measuring Range |
| Nitric acid |
0.32 |
0.32 to 32 ppm |
| Hydrogen chloride |
0.4 |
0.4 to 40 ppm |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.5ppm (2015) |
C 2 ppm (2015) |
- |
