氨气气体检测管3hm ammonia nh3 产品详情
详情介绍：
氨气气体检测管3hm ammonia nh3
ammonia no.3hmnh3performance
measuringrange
0.05 to 1.6%
1.6 to 3.52%
number of pump strokes
1
1/2
correctionfactor
1
2.2
samplingtime
1 minute per pumpstroke
detectinglimit
0.01% (n=1)
colorchange
pink → yellow
reactionprinciple
2nh3 + h2so4 → (nh4)2so42nh3 + h2so4 → (nh4)2so4
coefficient ofvariation 10% (for0.05 to 0.4 %), 5% (for 0.4 to 1.6 ppm)
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
pyridine
- plus error
discolor to yellowstain
amines other thanaromatic amines
- plus error
discolor to yellowstain
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
25ppm 35ppm 15 to 28%