简单介绍： 氨气检测管3l ammonia nh3，measuring range 0.5 to1 ppm 1 to 30 ppm 30 to 78 ppm number of pump strokes 2 1 1/2 correction factor 1/2 1 2.6 sampling time 1 seconds per p......
氨气检测管3l ammonia nh3 产品详情
详情介绍：
氨气检测管3l ammonia nh3 ammonia no.3lnh3
performance
measuring range
0.5 to1 ppm
1 to 30 ppm
30 to 78 ppm
number of pumpstrokes
2
1
1/2
correction factor
1/2
1
2.6
sampling time
1seconds perpump stroke
detecting limit
0.2 ppm (n=2)
color change
pink → yellow
reaction principle
2nh3 + h2so4 → (nh4)2so4
coefficient ofvariation 10% (for5 to 20 ppm), 5% (for 20 to 100 ppm)
shelflife 3years
correctionsfor
temperature & humidity temperature correction is necessary
store the tubes at cool and darkplace.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
carbondioxide
1%
-
no
hydrazine
- +
yellow
amines
1/15
+
yellow ( 5ppm)
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
25ppm 35ppm 15 to 28%