Gastec 122TP 톨루엔 C6H5CH3/가스 검지관 (2 - 80ppm)
Model122TP
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Calibration Range: 2 - 80 ppm
Measuring Range: 2 - 80 ppm
Sampling (flow) Rate: 100mL/min
Sampling Volume: 1000mL
Sampling Time: 10 min
Colour Change: White → Brown
Nr. of tests: 5 tubes
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 (1000mL) |
| 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 (NOTE)
| 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-STEL | Explosive range |
| 20 ppm(2014) | -- | 1.4｡ﾁ6.7% |
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