Gastec 161 便携式气体检测管乙醚检测管(C2H5)2O(0.04~1.0%)

Indicator: 0.04 ~ 1.0%
Measuring Range: 0.04 ~ 1.0%, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellowish brown → Dark green 
Reaction Principle: (C2H5)2O+ Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 0.04 to 0.2 %), 5% (for 0.2 to 1.0 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range 0.04 to 1.0%
Number of Pump Strokes 1
Correction Factor 1
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 0.001% (n=1)
Colour Change Yellowish brown → Dark green
Reaction Principle (C2H5)2O+ Cr6+ + H2SO4 → Cr3+
Coefficient of Variation 10% (for 0.04 to 0.2 %), 5% (for 0.2 to 1.0 %)
Shelf Life 3 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Propane 0.2% + Dark green (whole layer)(0.2%)
Alcohols, Esters, Ketones   + Dark green
Aromatic HCs. 500 ppm + Dark green(500 ppm)
Hydrogen sulphide 500 ppm + Green(500 ppm)
sulphur dioxide 500 ppm + Green(500 ppm)
Acetylene 0.3% + Dark green (whole layer)(0.3%)
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Isopropyl ether 0.45 2 0.018 to 0.45%
Methyl ether 0.85 1 0.034 to 0.85%
Tetrahydrofuran 1.4 1 0.056 to 1.4%
Toluene by scale 1 0.02 to 0.8%
Calibration gas generation Static gas dilution method
TLV-TWA TLV-STEL Explosive range
400 ppm (2014) 500 ppm (2014) 1.9 to 36%
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