简单介绍： 二氧化碳气体检测管2h carbon dioxide，measuring range 0.5 to 1% 1 to 10% 10 to 20% number of pump strokes 2 1 1/2 correction factor 1/2 1 2 sampling time 1 minute，二氧化碳气体检测管......
二氧化碳气体检测管2h carbon dioxide 产品详情
详情介绍：
二氧化碳气体检测管2h carbon dioxide carbon dioxide no.2hco2performance
measuring range
0.5 to 1%
1 to 10%
10 to 20%
number of pump strokes
2
1
1/2
correction factor
1/2
1
2
sampling time
1 minute per pumpstroke
detecting limit
0.1% (n=2)
color change
white → purple
reaction principle
co2 + n2h4 → nh2nhcooh
coefficient ofvariation 10% (for1 to 3 %), 5% (for 3 to 10 %)
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
ammonia
- no effect
nodiscoloration
carbonmonoxide
- no effect
nodiscoloration
chlorine - no effect nodiscoloration
hydrogen sulfde - no effect nodiscoloration
hydrogenchloride
- 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 -