Gastec 101L 快速汽油测量检测管CnHm(30~2000 ppm)

Indicator: 30 to 1000 ppm
Measuring Range: 
+ 30 to 1000 ppm, Number of Pump Strokes 2
+ 1000 to 2000 ppm, Number of Pump Strokes 1
Sampling Time: 2 minute per pump stroke
Colour Change: Brownish yellow → Dark green
Reaction Principle: CnHm + Cr6++ H2SO4 → Cr3+
Coefficient of Variation: 10% (for 30 to 300 ppm), 5% (for 300 to 1000 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
30 to 1000 ppm 1000 to 2000 ppm
Number of Pump Strokes
2 1
Correction Factor
1 2
Sampling Time 2 minutes per pump stroke
Detecting Limit 5 ppm (n=2)
Colour Change Brownish yellow → Dark green
Reaction Principle CnHm + Cr6++ H2SO4 → Cr3+
Coefficient of Variation 10% (for 30 to 300 ppm), 5% (for 300 to 1000 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
Hydrogen sulphide   + Dark brown
Acetylene   + Dark brown
Aromatic HCs   + Dark green
Esters, Ethers,Alcohols   + Dark green
sulphur dioxide   + Dark green
Organic solvents (C3)   + Dark green
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Allyl chloride Factor: 34 1/2 0.1 to 3.4%
Heptane Factor: 1.0 1 or 2 30 to 2000 ppm
Isobutene Factor: 22 1 0.07 to 2.2%
Calibration gas generation Static gas dilution method
TLV-TWA TLV-STEL Explosive range
300 ppm 500 ppm 1.4 to 7.6%

 

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