Vạch chỉ thị: 10 ~ 300 ppm
Thang đo:
+ 5 ~10 ppm, bơm 4 lần
+ 10 ~ 300 ppm, bơm 2 lần
+ 300 ~ 750 ppm, bơm 1 lần
Thời gian lấy mẫu: 1.5 phút mỗi lần bơm
Chuyển đổi màu: vàng sang đỏ
Phương trình phản ứng: 3CH3CHO + (NH2OH)3H3PO4 → H3PO4, H3PO4 + Base → Phosphate
Hệ số biến đổi: 10% (10 ~ 100 ppm), 5% (100 ~ 300 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 5 to10 ppm |
10 to 300 ppm |
300 to 750 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
2 ppm (n=4) |
| Colour Change |
Yellow → Red |
| Reaction Principle |
3CH3CHO + (NH2OH)3H3PO4 → H3PO4
H3PO4 + Base → Phosphate |
| Coefficient of Variation |
10% (for 10 to 100 ppm), 5% (for 100 to 300 ppm) |
| Shelf Life |
2 Years |
| Corrections for temperature & humidity |
Unnecessary |
| 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 |
| Ammonia |
|
 |
No |
| Acrolein |
3/5 times |
+ |
Red |
| Acetone |
2 times |
+ |
Red |
| Methyl ethyl ketone |
6 times |
+ |
Red |
| MIBK |
10 times |
+ |
Red |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Diacetyl |
by scale |
3 |
25 to 1500 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| - |
C 25 ppm |
4 to 60% |
