二甲醚CH3OCH3气体检测管123S DIMETHYL ETHER 0.01-1.2%

Tube No.
1. PERFORMANCE
1） Measuring range ：0.01-1.2％
Number of pump strokes 1（100ml）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：10 ppm
4） Shelf life ：3 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：Orange→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3OCH3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1.2
1.0
0.8
0.6
0.4
0.2
0.1
0.05
0.01
%
􀀀􀀀􀀀
123S DIMETHYL ETHER
Substance Interference ppm Coexistence
Acetylene 3％ Whole reagent is changed to
Brown.
Propane 0.2％ 〃
Oexthceepr to Hrgaalongice gnaasteeds hoyr dvraopcoaurbrsons Similar stain is produced. Higher readings are given.