简单介绍： 乙炔气体检测管171 hc≡ch acetylene，measuring range 0.05 to 0.1% 0.1 to 2.0% 2.0 to 4.0% number of pump strokes 2 1 1/2 correction factor 1/2 1 2 sampling time 2 minutes ......
乙炔气体检测管171 hc≡ch acetylene 产品详情
详情介绍：
乙炔气体检测管171 hc≡ch acetylene
acetylene 71hc≡ch
performance
measuringrange
0.05 to 0.1%
0.1 to 2.0%
2.0 to 4.0%
number of pumpstrokes
2
1
1/2
correctionfactor
1/2
1
2
sampling time
2 minutes per pumpstroke
detecting limit
0.02 % (n=2)
color change
white → brown
reaction principle
hcch + i2o5→ h2s2o7 + i2
coefficient ofvariation 15% (for0.1 to 0.5 %), 10% (for 0.5 to 2 %)
shelflife 3years
correctionsfor
temperature & humidity temperature correction is necessary
store the tubes inthe cool and dark place.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
carbonmonoxide
0.1%
plus error
produce brown stain
ethylene
0.5%
plus error
produce brown stain
more thanc3 hcs
- plus error
produce brownstain
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
benzene
0.3
4
0.03 to 0.6%
ethylene
1.0
1
0.1 to 2%
1,1,1-trichloroethane
0.6
1
0.06 to1.2%
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
- - 2.5to 81%