简单介绍： 羰基硫化物检测管21 carbonyl sulphide，measuring range 5 to 10 ppm 10 to 100 ppm 100 to 200 ppm number of pump strokes 2 1 1/2 correction factor 1/2 1 2 sampling，羰基硫化物检测管价......
羰基硫化物检测管21 carbonyl sulphide 产品详情
详情介绍：
羰基硫化物检测管21 carbonyl sulphide
carbonylsulphideno.21cosperformance
measuring range
5 to 10 ppm
10 to 100 ppm
100 to 200 ppm
number of pump strokes
2
1
1/2
correction factor
1/2
1
2
samplingtime
3 minutes per pumpstroke
detectinglimit
1 ppm (n=2)
colorchange
blue → yellow
reactionformula
cos + i2o5 + h2so4 → so2 + co2
so2 + bacl2 +h2o → baso3+hcl
hcl + base → chloride
coefficient ofvariation 10% (for10 to 30 ppm), 5% (for 30 to 100 ppm)
shelflife 2years
correctionsfor
temperature & humidity unnecessary
store the tubes inthe refrigerator to keep at 10oc (50of) orbelow.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
carbondisulfide
- plus error
produce yellowstain
sulfurdioxide
- plus error
produce yellowstain
butane
5000 ppm
minus error
nodiscoloration
propane
5000 ppm
minus error
nodiscoloration
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
- - 12 to 19%