二氧化碳检测管co2 carbon dioxide 产品详情
详情介绍：
二氧化碳检测管co2 carbon dioxide
carbon dioxideno.2llco2performance
measuringrange
300 to 5000ppm
number of pumpstrokes
300 to 5000 ppm(n=1)
correctionfactor
1
samplingtime
2 minutes per pumpstroke
detectinglimit
30 ppm (n=1)
colorchange
pale blue →purple
reactionprinciple
co2 + n2h4 → nh2nhcooh
coefficient ofvariation 10% (for 300 to 1000ppm), 5% (for 1000 to 5000 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
ammonia
- no effect
nodiscoloration
carbonmonoxide
- no effect
nodiscoloration
hydrogen chloride,
chlorine
- no effect
nodiscoloration
nitrogenoxides
- no effect
nodiscoloration
sulfurdioxide
- no effect
nodiscoloration
amines
- no effect
nodiscoloration
organicsolvents
- no effect
nodiscoloration
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
5000ppm 30000ppm -