Liquid petroleum gas(LPG)

NO.100A
C3EC4 ’Y‰»…‘f
Performance
Measuring Range 0.02 to 0.8%
Number of Pump Strokes 1
Correction Factor 1
Sampling Time 2 minutes per pump stroke
Detecting Limit 0.002% (n=1)
Colour Change Orange → Blackish Green
Reaction Principle LPG+ Cr6++ H2SO4 → Cr3+
Coefficient of Variation 10% (for 0.02 to 0.2 %), 5% (for 0.2 to 0.8 %)
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
Ketones 0.2% + Blackish green
Esters 0.2% + Blackish green
Hydro carbons(3)   + Blackish green
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Propylene 1 1 0.02 to 0.8 %
Xylene by scale 2 0.1 to 1.2 %
Calibration gas generation Static gas dilution method
TLV-TWA TLV-STEL Explosive range
1000ppm - 1.6to10%


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