简单介绍： 一氧化碳气体检测管1ll carbon monoxide，measuring range 5 to 50 ppm number of pump strokes 2 correction factor 1 sampling time 2 minutes per pump stroke detecting limit 1 p......
一氧化碳气体检测管1ll carbon monoxide 产品详情
详情介绍：
一氧化碳气体检测管1ll carbon monoxide
carbonmonoxidellcoperformance
measuringrange
5 to 50 ppm
number of pumpstrokes
2
correctionfactor
1
samplingtime
2 minutes per pumpstroke
detectinglimit
1 ppm (n=2)
colorchange
yellow → blackishbrown
reactionprinciple
co +na2pd(so3)2 → pd + co2 + so2 + na2so3
coefficient ofvariation 15% (for 5 to 10ppm), 10% (for 10 to 50 ppm)
shelflife 3 years
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
1/50 time
plus error
produces dark brownstain
sulfurdioxide
1/10 time
plus error
produces dark brownstain
nitrogendioxide
40 ppm
plus error
produces redstain
hydrogensulfide
1/5 time
plus error
produces dark brownstain
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
25 ppm - 12.5 to 74%