Gastec 5La 便携式气体检测管二氧化硫检测管 SO2(0.5-60 ppm)

Indicator: 2 to 30 ppm
Measuring Range: 
+ 0.5~1ppm, Number of Pump Strokes 8
+ 1~2 ppm, Number of Pump Strokes 4
+ 2 to 30 ppm, Number of Pump Strokes 2
+ 30 to 60 ppm, Number of Pump Strokes 1
Sampling Time:  1minutes per pump stroke
Colour Change: Blue → Yellow
Reaction Principle: SO2 + BaCl2 +H2O → BaSO3 + 2HCl, HCl+Base → Chloride 
Coefficient of Variation: 10% (for 2 to 10 ppm), 5% (for 10 to 30 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range
0.5 to
1 ppm
1 to
2 ppm
2 to
30 ppm
30 to
60 ppm
Number of Pump Strokes
8 4 2 1
Correction Factor
1/4 1/2 1 2
Sampling Time 1 minute per pump stroke
Detecting Limit 0.1 ppm (n=8)
Colour Change Blue → Yellow
Reaction Principle SO2 + BaCl2 +H2O → BaSO3 + 2HCl
HCl+Base → Chloride
Coefficient of Variation 10% (for 2 to 10 ppm), 5% (for 10 to 30 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
Carbon monoxide,
Nitric oxide
  No No
Carbon dioxide 100% Unclear demarcation Unclear demarcation
Nitrogen dioxide ≧ 1/1 + Pale purple
Hydrogen sulphide   No No
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Thionyl chloride 0.72 2 1.44 to 21.6 ppm

 

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