甲苯检测管22TP
GASTEC为了满足用户在气体检测方面的需要，而开发出了电子自动采气泵。用传统的电子吸气泵几乎不能进行有效的采气，因为检测管里的填充试剂密度很高。而GASTEC开发的GSP电泵系列能提供强劲吸力，能满足特定的检测管的取样要求。电泵和检测管组成的新的检测系统能适用于作业环境的检测。甲苯检测管22TP，GASTEC甲苯检测管22TP气体检测管，GASTEC甲苯检测管22TP电泵用气体检测管检测范围2-80ppm。
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This detector tube is only to be used with automatic gas sampler GSP-300FT-2 |
Specifications
| Calibration Range | 2 - 80 ppm |
| Measuring range | 2 - 80 ppm |
| Sampling （flow） Rate | 100mL/min |
| Sampling Volume | 1000mL |
| Sampling Time | 10min |
| Detecting Limit | 1 ppm |
| Colour Change | White → Brown |
| Corrections for temperature/humidity | Unnecessary for 0 to 40ºC
Unnecessary for R.H.0 to 90% |
| Shelf life | 2 years |
| Accuracy | CV=5-10%
（CV: Coefficient of variation = σ: standard deviation / mean value x 100） |
Possibly coexisting substances and their interferences
| Substance（s） | Interference | Colour change by itself |
| Alcohols | 200ppm | No | No |
| Ethyl benzene | 5ppm | + | Brown |
| Xylene | 10ppm | + | Brown |
| Ethyl acetate | 200ppm | No | No |
| Aliphatic hydrocarbons | 100ppm | No | No |
| Organochlorine hydrocarbons | 150ppm | + | No |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-S | Explosive range |
| 50 ppm | -- | 1.4×6.7% |
