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。
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-STEL | Explosive range |
50ppm | -- | 1.4×6.7% |