Gastec 4HT 快速硫化氢测量探测管H2S(1~40%)

Indicator: 2 to 20 %
Measuring Range: 
+ 1 to 2 %, Number of Pump Strokes 2
+ 2 to 20 %, Number of Pump Strokes 1
+ 20 to 40 %, Number of Pump Strokes 1/2
Sampling Time:  per pump stroke
Colour Change: Pale Blue → Blackish Brown
Reaction Principle: H2S + CuSO4 → CuS + H2SO4
Coefficient of Variation: 10% (for 2 to 6 %), 5% (for 6 to 20 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range
1 to 2 % 2 to 20 % 20 to 40 %
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 2
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 0.2% (n=2)
Colour Change Pale Blue → Blackish Brown
Reaction Principle H2S + CuSO4 → CuS + H2SO4
Coefficient of Variation 10% (for 2 to 6 %), 5% (for 6 to 20 %)
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
sulphur dioxide 5% No
Mercaptans 10% + No
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
1 ppm 5 ppm 4.0 to 44%

 

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