酸性气体检测管80 acid gases 产品详情
详情介绍：
酸性气体检测管80 acid gases
acid gases no.80
performance (acetic acid)
measuring range
1 to 2 ppm
2 to 40 ppm
40 to 80 ppm
number of pump strokes
4
2
1
correction factor
1/2
1
2
sampling time
45 seconds per pumpstroke
detecting limit
0.5 ppm (n=4)
color change
palereddish purple → pale yellow
reaction principle
acid gases react withdetecting layer to produce yellow stain.
coefficient ofvariation 10% (for2 to 40 ppm)
shelflife 2years
correctionsfor
temperature & humidity unnecessary
store the tubes in dark and coolplace
possible coexisting substances and theirinterferences (note)
substance
correction
pump
strokes
color change
measuring range
hydrogen chloride
4
2
pale reddishpurple
4 to 320 ppm
chlorine
0.35
2
white
0.35 to 28 ppm
nitric acid
2.5
2
pale reddishpurple
2.5 to 200 ppm
sulfur dioxide
0.75
2
yellow
0.75 to 60 ppm
nitrogen dioxide
0.1
2
pinkish gray
0.1 to 80 ppm
iodine
0.06
2
light bluishgray
0.06 to 48ppm
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
acetylene
1.5
1/2, 1, 2
0.075 to 3.6%
butane, heptane,isobutane
0.7
1/2, 1, 2
0.035 to 1.68%
ethylene
7.0
1/2, 1, 2
0.35 to 16.8%
hexane
0.5
1/2, 1, 2
0.025 to 1.2%
isopentane
0.9
1/2, 1, 2
0.045 to 2.16%
pentane
0.75
1/2, 1, 2
0.0375 to 1.8%
propane
1.0
1/2, 1, 2
0.05 to2.4%
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
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