Gastec 143 便携式气体检测管乙酸乙烯酯检测管 CH3CO2CH:CH2(5~250ppm)

Indicator: 10 to 100 ppm
Measuring Range:
+ 5 to 10 ppm, Number of Pump Strokes 4
+ 10 to 100 ppm, Number of Pump Strokes 2
+ 100 to 250 ppm, Number of Pump Strokes 1
Sampling Time: 30 seconds per pump stroke
Colour Change: White → Brown
Reaction Principle: CH3CO2CH:CH2+C6H3(CH3)3+ H2S2O7 → Condensation Polymer (Brown)
Coefficient of Variation: 15% (for 10 to 20 ppm), 10% (for 20 to 100 ppm)
Nr. of tests: 5
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
5 to 10 ppm 10 to 100 ppm 100 to 250 ppm
Number of Pump Strokes
4 2 1
Correction Factor
1/2 1 2.5
Sampling Time 30 seconds per pump stroke
Detecting Limit 1 ppm (n=4)
Colour Change White → Brown
Reaction Principle CH3CO2CH:CH2+C6H3(CH3)3+ H2S2O7 → Condensation Polymer (Brown)
Coefficient of Variation 15% (for 10 to 20 ppm), 10% (for 20 to 100 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Aldehydes   + Brown
Ketones   + Brown
Ethylene ≧ 1000 ppm + Yellow
Vinyl chloride ≧ 500 ppm + Yellow
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
10 ppm 15 ppm 2.6 to 13.4%
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