乙苯檢測管NO. 122P
GASTEC為了滿足用戶在氣體檢測方面的需要，而開發出了電子自動采氣泵。用傳統的電子吸氣泵幾乎不能進行有效的采氣，因為檢測管里的填充試劑密度很高。而GASTEC開發的GSP電泵系列能提供強勁吸力，能滿足特定的檢測管的取樣要求。電泵和檢測管組成的新的檢測系統能適用于作業環境的檢測。乙苯檢測管22P，GASTE乙苯C6H5C2H5 NO. 122P氣體檢測管，乙苯檢測管NO. 122P電泵用氣體檢測管檢測范圍110-2750μg/m3。
Toluene | NO.122P |
| C6H5CH3 |
Specifications
| Calibration Range | 100-2500μg/m3 |
| Measuring range | 100-7000μg/m3 |
| Sampling （flow） Rate | 200mL/min |
| Sampling Volume | 6000mL, 2000mL |
| Sampling Time | 30min, 10min |
| Detecting Limit | 50μg/m3 |
| Colour Change | White → Pale brown |
| Corrections for temperature/humidity | Unnecessary for 5 to 35 ºC Unnecessary for R.H.0 to 80% |
| Shelf life | 2 years |
Possibly coexisting substances and their interferences
| Substance（s） | Interference | Colour change by itself |
| Ethanol | No | No | |
| Xylene,Styrene | 1000μg/m3 | + | Pale brown |
| p-Dichlorobenzene | No | No | |
| α-Pinene | No | No | |
| n-Hexane | No | No | |
| Aromatic hydrocarbons | + | Pale brown | |
| Formaldehyde | 1/3 | No | No |
Other substance（s） measurable with this detector tube
| Substance（s） | Correction Factor | Pump Strokes [n] | Measuring Range |
| Ethyl benzene | coefficient: 1.1 | 200mL/min x 30min | 110-2750μg/m3 |
| Xylene | coefficient: 5.4 | 200mL/min x 30min | 540-13500μg/m3 |
| Calibration gas generation | Permeation tube method |
Miscellaneous
| Electric sampling pump This detector tube is suited for measuring toluene in indoor environments. The GSP-200 / GSP-300FT-2 series automatic gas samplers （or comparable sampling devices/pumps） should always be used for optimal performance. A deviation of +/-10% in the sampling flowrate （i.e. amount of air flowing through the tube at a given moment） or the sampling amount （total sampled amount of target substance） causes an average margin of error of approx. +/-10% （maximum +/-20%） in the indicated value. |
| TLV-TWA | TLV-S | Explosive range |
| 50ppm | -- | 1.4×6.7% |
