氯化苯气体检测管126 chlorobenzene 产品详情
详情介绍：
氯化苯气体检测管126 chlorobenzene
chlorobenzene26c6h5clperformance
measuring range
2to 5ppm
5to 200ppm
200to 500ppm
number of pumpstrokes
2
1
1/2
correctionfactor
0.4
1
2.5
sampling time
1.5 minutes per pumpstroke
detecting limit
0.2 ppm (n=2)
color change
white → gray
reaction principle
c6h5cl+ i2o5 + h2s2o7 → i2
coefficient ofvariation 15% (for 5 to 50ppm), 10% (for 50 to 200 ppm)
shelflife 3years
correctionsfor
temperature & humidity unnecessary
store the tubes at cool and darkplace.
possible coexisting substances and theirinterferences (note)
substance
concentration
result
change color by itself
carbon monoxide
0.1%
no effect(2layers)
discolors wholelayer
acetylene, hexane, ethylene
0.2%
no effect(2layers)
discolors wholelayer
alcohols, ketones
1%
plus error
nodiscoloration
esters
0.2%
plus error
nodiscoloration
aromatic hydrocarbons
- plus error
discolors to grayishbrown
othersubstance measurable with this detector tube
calibration gasgeneration permeation tube method
tlv-twa tlv-stel explosive range
10ppm - 1.3 to 9.6%