简单介绍： 氢气检测管30 hydrogen，measuring range 0.5 to 2.0% number of pump stroke 1 correction factor 1 sampling time 2 minutes，氢气气体检测管价格
氢气检测管30 hydrogen 产品详情
详情介绍：
氢气检测管30 hydrogen
hydrogen no.30h2performance
measuring range
0.5 to 2.0%
number of pump stroke
1
correction factor
1
sampling time
2 minutes per pump stroke
detecting limit
0.5%(n=1)
color change
yellow → yellowish brown
reaction principle
h2 + na2pd(so3)2 → pd + na2so3 + h2so3
shelf life 3 years
corrections for
temperature & humidity unnecessary
store the tubes at cool and dark place.
this is not a direct reading tube. concentrations should be determined by using the concentration chart attached with this tube.
possible coexisting substances and their interferences (note)
substance
interference
change color by itself
carbon monoxide
hydrogen sulfide
produce 2 layers
(yellowish brown and blackish brown)
produce blackish brown
acetylene
produce 2 layers
(yellowish brown and blackish brown)
produce blackish brown
ethylene
plus error
produce blackish brown
other substance measurable with this detector tube
calibration gas generation high pressure gas cylinder method
tlv-twa tlv-stel explosive range
- - 4 to 75%