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三氯乙烯检测管132L Trichloroethylene
Trichloroethylene No.132L
Cl2C:CHCl
| Performance |
MeasuringRange | 1to 2ppm | 2to 25ppm | 25to 70ppm |
Number of Pump Strokes | 2 | 1 | 1/2 |
Correction Factor | 1/2 | 1 | 2.8 |
SamplingTime | 1 minute per pumpstroke | ||
DetectingLimit | 0.4 ppm (n=2) | ||
ColorChange | Yellow →Purple | ||
ReactionPrinciple | Cl2C:CHCl + PbO2 +H2SO4 →HCl | ||
| Coefficient ofVariation | 10% (for1 to 5 ppm), 5% (for 5 to 25 ppm) | ||
| ShelfLife | 2Years | ||
| Correctionsfor temperature & humidity | Temperature correction is necessary | ||
| Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color byitself |
Nitric Oxide,Nitrogen dioxide | - | No effect | Nodiscoloration |
Hydrogen chloride,Chlorine, Bromine | - | Plus error | Produce reddishpurple stain |
Acetone | 200 ppm | No effect | Nodiscoloration |
UnsaturatedHalogenated HCs | - | Plus error | Produces reddishpurple stain |
Aromatichydrocarbons | 100ppm | Minus error | Nodiscoloration |
| Othersubstance measurable with this detector tube |
Substance | Correction Factor | Pump Strokes | Measuring Range |
Benzylchloride | 0.8 | 2 | 1.6 to 20ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 50ppm | 100ppm | - |