氨气气体检测管3h ammonia nh3 产品详情
详情介绍：
氨气气体检测管3h ammonia nh3
ammonia no.3hnh3performance
measuring range
0.2 to 1%
1 to 16%
16 to 32%
number of pumpstrokes
5 - 2
1
1/2
correction factor
1/5 to 1/2
1
2
sampling time
1 minute per pumpstroke
detecting limit
0.05% (n=5)
color change
purple →yellow
reaction principle
3nh3 + h3po4 → (nh4)3po4
coefficient ofvariation 10% (for1 to 4 %), 5% (for 6 to 16 %)
shelflife 3years
correctionsfor
temperature & humidity unnecessary
store the tubes at cool and darkplace.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
hydrazine
- plus error
discolor to yellowstain
carbondioxide
1% or higher
minus error
nodiscoloration
amines other thanaromatic amines
- plus error
discolor to yellowstain
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
dimethylamine
1.2
1
1.2 to19.2%
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
25ppm 35ppm 15 to 28%