简单介绍： 1,3-丁二烯气体检测管174 1,3-butadiene,measuring range 50 to 800 ppm number of pump strokes 1 correction factor 1 sampling time 3 minutes per pump stroke detecting,1,3-丁二......
1,3-丁二烯气体检测管174 1,3-butadiene 产品详情
详情介绍：
1,3-丁二烯气体检测管174 1,3-butadiene 1,3-butadiene 74ch2:chch:ch2performance
measuringrange
50 to 800 ppm
number of pump strokes
1
correctionfactor
1
samplingtime
3 minutes per pumpstroke
detectinglimit
10 ppm (n=1)
colorchange
paleyellow white
reactionprinciple
1,3-butadiene reactswith palladium sulfate and ammonium
molybdate to to produce white compound.
coefficient ofvariation 10% (for 50 to 200ppm), 5% (for 200 to 800 ppm)
shelflife 3 years
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, carbonmonoxide
10 ppm plus error
discolor toblue
ammonia, hydrogencyanide
- plus error
discolor towhite
hydrogen
20% plus error
discolors to blue forwhole layer
hydrogensulfide
10 ppm plus error
discolors toblack
ethylene
1 ppm plus error
discolors toblue
styrene
- plus error
discolor to paleblue
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
1,3-pentadiene
5.0
1
250 to 4000ppm
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
2ppm - 2.0 to 12%