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一氧化碳气体检测管1LM Carbon monoxide,一氧化碳气体检测管1LM CO Carbon monoxide,Measuring Range 25 to 50 ppm 50 to 1000 ppm 1000 to 2000 ppm Number of Pump Strokes 21 1/2 Correction Factor 1/2 1 2 Sampling),一氧化碳气体检测管价格
详情介绍:
一氧化碳气体检测管1LM Carbon monoxide
Carbonmonoxide No.1LM
CO
Performance |
MeasuringRange | 25to 50 ppm | 50 to 1000 ppm | 1000 to 2000ppm |
Number of Pump Strokes | 2 | 1 | 1/2 |
CorrectionFactor | 1/2 | 1 | 2 |
SamplingTime | 3 minutes per pumpstroke | ||
DetectingLimit | 5 ppm (n=2) | ||
ColorChange | White → Palebrown | ||
ReactionPrinciple | 5CO +I2O5 +H2S2O7 → I2 | ||
Coefficient ofVariation | 10% (for 50 to 200ppm), 5% (for 200 to 1000 ppm) | ||
ShelfLife | 3Years | ||
Correctionsfor temperature & humidity | Unnecessary | ||
Store the tubes at cool and darkplace. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Acetylene,Olephines, | - | Plus error | Produce similar stainby themselves. |
Butane | - | Plus error | Pale Brown |
Hydrogen | - | No | No |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-STEL | Explosive range |
25 ppm | - | 12.5 to 74% |