Gastec 2HH 快速二氧化碳测量探测管CO2(2.5~40%)

Indicator: 5~40%
Measuring Range: 
+ 2.5 to 5%, Number of Pump Strokes 1
+ 5 to 40%, Number of Pump Strokes 1/2
Sampling Time: 45 seconds 
Colour Change: Orange → Yellow
Reaction Principle: CO2 + 2KOH → K2CO3 + H2O
Coefficient of Variation: 10% (for 5 to 10 %), 5% (for 10 to 40 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range
2.5 to 5% 5 to 40%
Number of Pump Strokes
1 1/2 (50 mL)
Correction Factor
1/2 1
Sampling Time 45 seconds
Detecting Limit 0.04% (n=1)
Colour Change Orange → Yellow
Reaction Principle CO2 + 2KOH → K2CO3 + H2O
Coefficient of Variation 10% (for 5 to 10 %), 5% (for 10 to 40 %)
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 8% No No
Carbon monoxide   No No
Hydrogen chloride 3% No White ( 4000 ppm)
Chlorine 1% No White ( 1000 ppm)
Nitrogen dioxides 1/5 No Pale yellow ( 50 ppm)
Sulphur dioxide 2% No Pale yellow ( 2400 ppm)
Ethanol 7% No Pale yellow ( 2 %)
Acetic acid 2% No Pale yellow ( 4500 ppm)
Hydrogen sulphide 1/15 No Pale yellow ( 1200 ppm)
Ttimethylamine 10% No No
Nitoric oxide   No No
Ethylene , Propane   No No
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
5000 ppm(2014) 30000 ppm(2014) -

 

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