Gastec 4HP 快速硫化氢测量探测管H2S(0.25~20%)

Indicator: 1 to 10 %
Measuring Range: 
+ 0.25 to 0.5%, Number of Pump Strokes 2
+ 0.5 to 10 %, Number of Pump Strokes 1
+ 10 to 20 %, Number of Pump Strokes 1/2
Sampling Time: 3 minutes per pump stroke
Colour Change: Pale Blue → Blackish Brown
Reaction Principle: H2S + CuSO4 → CuS + H2SO4
Coefficient of Variation: 10% (for 0.5 to 3 %), 5% (for 3 to 10 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

manual tube

Performance
Measuring Range
0.25 to 0.5% 0.5 to 10 % 10 to 20 %
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 2
Sampling Time 3 minutes per pump stroke
Detecting Limit 0.1% (n=2)
Colour Change Pale Blue → Blackish Brown
Reaction Principle H2S + CuSO4 → CuS + H2SO4
Coefficient of Variation 10% (for 0.5 to 3 %), 5% (for 3 to 10 %)
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
Ammonia   Two layers
(Dark brown & dark blue)
Dark blue
sulphur dioxide 2.5% No
Mercaptans 5 % + No
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
1 ppm (2014) 5 ppm (2014) 4.0 to 44%

 

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