Vạch chỉ thị: 50 to 800 ppm
Thang đo:
+ 17 ~ 50 ppm, bơm 2 lần
+ 50 ~ 800 ppm, bơm 1 lần
+ 800 ~ 2400 ppm, bơm 1/2 lần
Thời gian lấy mẫu: 1 phút mỗi lần bơm
Chuyển đổi màu: vàng sang đỏ
Phương trình phản ứng: 2HCN + HgCl2 → Hg(CN)2 + 2HCl, HCl + Base → Chloride
Hệ số biến đổi: 10% ( 50 ~ 200 ppm), 5% ( 200 ~ 800 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 17 to 50 ppm |
50 to 800 ppm |
800 to 2400 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
1 ppm (n=2) |
| Colour Change |
Yellow → Red |
| Reaction Principle |
2HCN + HgCl2 → Hg(CN)2 + 2HCl
HCl + Base → Chloride |
| Coefficient of Variation |
10% (for 50 to 200 ppm), 5% (for 200 to 800 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 |
| Hydrogen sulphide |
500 ppm |
+ |
Red |
| sulphur dioxide |
500 ppm |
+ |
Red |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| - |
C 4.7 ppm |
5.6 to 40% |
