简单介绍： 一氧化碳气体检测管1lm carbon monoxide，一氧化碳气体检测管1lm co carbon monoxide，measuring range 25 to 50 ppm 50 to 1000 ppm 1000 to 2000 ppm number of pump strokes 21 1/2 correctio......
一氧化碳气体检测管1lm carbon monoxide 产品详情
详情介绍：
一氧化碳气体检测管1lm carbon monoxide
carbonmonoxidelmcoperformance
measuringrange
25to 50 ppm
50 to 1000 ppm
1000 to 2000ppm
number of pump strokes
2
1
1/2
correctionfactor
1/2
1
2
samplingtime
3 minutes per pumpstroke
detectinglimit
5 ppm (n=2)
colorchange
white → palebrown
reactionprinciple
5co +i2o5 +h2s2o7 → i2
coefficient ofvariation 10% (for 50 to 200ppm), 5% (for 200 to 1000 ppm)
shelflife 3years
correctionsfor
temperature & humidity unnecessary
store the tubes at cool and darkplace.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
acetylene,olephines,
propane, hexane
- plus error
produce similar stainby themselves.
butane - plus error pale brown
hydrogen - no no
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
25 ppm - 12.5 to 74%