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

制造商: Gastec
Model: 161
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技术规格
制造商消息

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

Details

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%)