Gastec 5Lb 二氧化硫SO2气体检测管(0.05-10ppm)

Indicator: 0.2 ~ 5.0 ppm
Measuring Range: 
+ 0.05 ~ 0.1 ppm, Number of Pump Strokes 8
+ 0.1 to 0.2 ppm, Number of Pump Strokes 4
+ 0.2 ~ 5.0 ppm, Number of Pump Strokes 2
+ 5.0 ~10.0 ppm, Number of Pump Strokes 1
Sampling Time:  1 minute per pump stroke
Colour Change: Yellowish green → Yellow
Reaction Principle: SO2 + BaCl2 +H2O → BaSO3 + 2HCl, HCl+Base → Chloride 
Coefficient of Variation: 10% (0.2 ~ 1 ppm), 5% (1 ~ 5 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.05 to
0.1 ppm
0.1 to
0.2 ppm
0.2 to
5.0 ppm
5.0 to
10.0 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 0.01 ppm (n=8)
Colour Change Yellowish green → Yellow
Reaction Principle SO2 + BaCl2 +H2O → BaSO3 + 2HCl
HCl+Base → Chloride
Coefficient of Variation 10% (for 0.2 to 1 ppm), 5% (for 1 to 5 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% + Yellow
Nitrogen dioxide ≧ 1 ppm Unclear demarcation Yellow
Hydrogen sulphide   No No
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
- 0.25 ppm (2014) -

 

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