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E-mail
1375312008@qq.com
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Phone
18121126516(微信同号)13301881771
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Address
Building 10, 4th Floor, Block F, No. 1188 Lianhang Road, Minhang District, Shanghai
Shanghai Yudong Electronic Technology Co., Ltd
1375312008@qq.com
18121126516(微信同号)13301881771
Building 10, 4th Floor, Block F, No. 1188 Lianhang Road, Minhang District, Shanghai

| Performance |
MeasuringRange |
10 to 20 ppm |
20 to 500 ppm |
500 to 1500ppm |
Number of Pump Strokes |
2 |
1 |
1/2 |
Correction Factor |
1/2 |
1 |
3 |
SamplingTime |
30 seconds per pumpstroke |
||
DetectingLimit |
1 ppm (n=2) |
||
ColorChange |
White → Yellow |
||
ReactionPrinciple |
C6H5CH:CH2+H2S2O7→ CondensationPolymer |
||
| Coefficient ofVariation | 15% (for20 to 100 ppm), 10% (for 100 to 500 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity |
Unnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance |
Concentration |
Interference |
Change color by itself |
Alcohols |
0.5% |
Plus error(Bleaching) |
Nodiscoloration |
Esters |
0.5% |
Plus error(Bleaching) |
Nodiscoloration |
Ketones |
0.5% |
Plus error(Bleaching) |
Nodiscoloration |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 20ppm | 40ppm | 1.1to 6.1% |