Gastec 102H 快速2,2-二甲基丁烷检测管 CH3(CH2)4CH3(0.015~1.2%)

Indicator: 0.03 to 0.6%
Measuring Range: 
+ 0.015 to 0.03%, Number of Pump Strokes 2
+ 0.03 to 0.6%, Number of Pump Strokes 1
+ 0.6 to 1.2%, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Orange → Dark green
Reaction Principle: CH3(CH2)4CH3 + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 0.03 to 0.2 %), 5% (for 0.2 to 0.6 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.015 to 0.03% 0.03 to 0.6% 0.6 to 1.2%
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 2
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.003% (n = 2)
Colour Change Orange → Dark green
Reaction Principle CH3(CH2)4CH3 + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation 10% (for 0.03 to 0.2 %), 5% (for 0.2 to 0.6 %)
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
Acetylene 3% + Dark green (whole layer)
Propane 0.2% + Dark green (whole layer)
Aromatic HCs 500 ppm + Dark green
Alcohols, Esters, Ethers   + Dark green
Halogenated HCs 5000 ppm + Dark green
Hydrogen sulphide 500 ppm + Dark green
sulphur dioxide 500 ppm + Green
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
CycloHexane Factor: 1.0 1/2, 1 or 2 0.015 to 1.2%
Methylchyclohexane Factor: 1.4 1 0.04 to 0.84%
Calibration gas generation Static gas dilution method
TLV-TWA TLV-STEL Explosive range
50 ppm - 1.1 to 7.5%

 

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