简单介绍： 硫化羰检测管21la carbonyl sulphide，measuring range 2 to 5 ppm 5 to 50 ppm 50 to 125 ppm number of pump strokes 1 1 1/2 correction factor 0.4 1 2.5 sampling time 3 minu......
硫化羰检测管21la carbonyl sulphide 产品详情
详情介绍：
硫化羰检测管21la carbonyl sulphide
carbonylsulphideno.21lacosperformance
measuring range
2to5ppm
5to 50ppm
50 to125ppm
number of pump strokes
1
1
1/2
correction factor
0.4
1
2.5
samplingtime
3 minutes per pumpstroke
detectinglimit
0.8 ppm (n=2)
colorchange
bluish purple →white
reactionformula
cos +i2o5 +h2so4 →so2 + co2
so2 + i2 +h2o → 2hi + h2so4
coefficient ofvariation 10% (for10 to 30 ppm), 5% (for 30 to 100 ppm)
shelflife 2years
correctionsfor
temperature & humidity temperaturecorrection is necessary
store the tubes inthe refrigerator to keep at 10oc (50of) orbelow.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
carbonmonoxide
500ppm +
black
sulphur dioxide,carbon disulphide
+
white
carbondioxide
no
no
nitrogendioxide
2 ppm
+
brown
hydrogen sulphide 1000 ppm
+
white
propane, butane 10%
no
black at the top of the discolouredarea.
*in case the primary tube is totallydiscolours, analyzer tube will give white discolouration byhydrogen sulphide.calibration gasgeneration high pressure gascylinder method
tlv-twa tlv-stel explosive range
- - 12 to 19%