Gastec 5H 二氧化硫气体检测管SO2(0.05~8%)

Indicator: 0.5 ~ 4.0%
Measuring Range: 
+ 0.05 to 0.5%, Number of Pump Strokes 2 to 10
+ 0.5 to 4.0%, Number of Pump Strokes 1
+ 4.0 to 8.0%, Number of Pump Strokes 1/2
Sampling Time:  per pump stroke
Colour Change: 
Reaction Principle: SO2 + Cr6+→ Cr3+
Coefficient of Variation: 10% (for 0.5 to 1 %), 5% (for 1 to 4 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.05 to 0.5% 0.5 to 4.0% 4.0 to 8.0%
Number of Pump Strokes
2 to 10 1 1/2
Correction Factor
1/2 to 1/10 1 2
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.01% (n=10)
Colour Change Orange → Green
Reaction Principle SO2 + Cr6+→ Cr3+
Coefficient of Variation 10% (for 0.5 to 1 %), 5% (for 1 to 4 %)
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   No No
Carbon dioxide   No No
Nitrogen dioxide   No No
Hydrogen sulphide ≧500 ppm + No
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
- 0.25 ppm (2014) -

 

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