Gastec 1LL 气体检测管一氧化碳CO(5~50 ppm)

Indicator: 5 ~ 50 ppm
Measuring Range: 5 ~ 50 ppm, Number of Pump Strokes 2
Sampling Time:  3 minutes per pump stroke
Colour Change: Yellow → Blackish brown
Reaction Principle: CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3
Coefficient of Variation: 15% (for 5 to 10 ppm), 10% (for 10 to 50 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range 5 to 50 ppm
Number of Pump Strokes 2
Correction Factor 1
Sampling Time 3 minutes per pump stroke
Detecting Limit 1 ppm (n=2)
Colour Change Yellow → Blackish brown
Reaction Principle CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3
Coefficient of Variation 15% (for 5 to 10 ppm), 10% (for 10 to 50 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
Acetylene 1/50 time + Dark brown
sulphur dioxide 1/10 time + Dark brown
Nitrogen dioxide 40 ppm + Red
Hydrogen sulphidet 1/5 time + Dark brown
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
25 ppm(2014) - 12.5 to 74%

 

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