简单介绍： 二硫化碳气体检测管13 carbon disulphide，二硫化碳气体检测管13 cs2 carbon disulphide，measuring range 0.63 to 1.25 ppm 1.25 to 2.5 ppm 2.5 to 50 ppm 50 to 100 ppm，二硫化碳气体检测管价格
二硫化碳气体检测管13 carbon disulphide 产品详情
详情介绍：
二硫化碳气体检测管13 carbon disulphide carbon disulphide 3cs2performance
measuring range
0.63 to 1.25ppm
1.25 to 2.5 ppm
2.5 to 50 ppm 50 to 100 ppm
number of pump strokes
4
2
1
1/2
correction factor
1/4
1/2
1
2
sampling time
3 minutes per pump stroke
detecting limit
0.3 ppm (n=4)
colour change
blue → yellow
reaction principle
cs2 +cro3 + h2s2o7 → so2 + co2
so2 + bacl2 +h2o → baso3 +2hcl
hcl + base → chlorides
coefficient of variation
10% (for 2.5 to 10 ppm), 5% (for 10 to 50ppm)
shelf life
3 years
corrections for temperature &humidity
temperature correction isnecessary
store the tubes at cool and darkplace.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
ammonia
no
no
hydrogencyanide
200ppm no
no
sulphur dioxide
1/ 5time +
yellow
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
10 ppm - 1.3 to 50%