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Gastec 3DL 氨被动发现管NH3(0.1~10 ppm)

Indicator: 1 to 10 ppm
Measuring Range: 0.1 to 10 ppm
Sampling Hours: 1 to 10 hours
Colour Change: Pink → Yellow
Reaction Principle: 2NH3 + H2SO4 → (NH4)2SO4
Coefficient of Variation: 10% (for 1 to 10 ppm-hr)
Nr. of tests: 10

Details

Catalog

Performance
Measuring Range 0.1 to 10 ppm
Sampling Hours 1 to10 hours
Detecting Limit 0.02 ppm (10 hours)
Colour Change Pink → Yellow
Reaction Principle 2NH3 + H2SO4 → (NH4)2SO4
Coefficient of Variation 10% (for 1 to 10 ppm-hr)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature and Humidity correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Amines   + Yellow
Hydrazine   + Yellow
Other substance measurable with this detector tube
Substance Correction Factor Sampling Time Measuring Range
Methyl amine 1.9 0.19 to 19 ppm 1 to 10 hours
Trimethyl amine 2.3 0.23 to 23 ppm 1 to 10 hours
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
25 ppm 35 ppm 15 to 28%

 

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