简单介绍： 1,3-丁二烯气体检测管174l 1,3-butadiene，measuring range 2.5 to 5 ppm 5 to 100 ppm number of pump strokes 8 4 correction factor 1/2 1 sampling time，1,3-丁二烯气体检测管174l 1,3-bu......
1,3-丁二烯气体检测管174l 1,3-butadiene 产品详情
详情介绍：
1,3-丁二烯气体检测管174l 1,3-butadiene
1,3-butadiene 74ch2:chch:ch2performance
measuringrange
2.5 to 5 ppm
5 to 100 ppm
number of pump strokes
8
4
correctionfactor
1/2
1
samplingtime
3 minutes per pumpstroke
detectinglimit
0.5 ppm (n=8)
colorchange
pale yellow →white
reactionprinciple
ch2:chch:ch2 +(nh4)2moo4 + pd2so4 → white product
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
acetylene, hydrogencyanide
- plus error
discolor towhite
carbon monoxide,hydrogen
- plus error
discolors to blue forwhole layer
hydrogenchloride
- plus error
discolors to pinkstain
hydrogensulfide
- plus error
discolors toblack
ethylene, propylene,butylene
- plus error
discolors toblue
butane,pentane
- plus error
discolor to blue forwhole layer
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
1,3-pentadiene
8.5
4
42.5 to 850ppm
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
2ppm - 2.0 to 12%