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上海市所在地
1,3-丁二烯气体检测管 1,3-Butadiene CH2=CHCH=CH2 0.03-2.6%
Tube 68SA
1. PERFORMANCE
1) Measuring range :0.03-2.6%
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) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Brownish orange→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH2=CHCH=CH2+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
0.03
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
%
GAS To pump
168SA 1, 3-BUTADIENE
Substance Interference ppm Coexistence
Acetylene Whole regent is discoloured to Brown. 3% Higher readings are given.
Propane 〃0.2% 〃
Other organic gases or vapours except Halogenated hydrocarbons Similar stain is produced. 50 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (%)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(%) (32°F) (50°F) (68°F) (86°F) (104°F)
2.6 3.3 3.0 2.6 2.5 2.4
2.4 3.0 2.7 2.4 2.3 2.2
2.2 2.7 2.5 2.2 2.1 2.0
2.0 2.4 2.2 2.0 1.9 1.8
1.8 2.1 2.0 1.8 1.8 1.7
1.6 1.9 1.8 1.6 1.6 1.5
1.4 1.6 1.5 1.4 1.4 1.3
1.2 1.4 1.3 1.2 1.2 1.1
1.0 1.1 1.1 1.0 1.0 0.9
0.8 0.9 0.8 0.8 0.8 0.7
0.6 0.7 0.6 0.6 0.6 0.6
0.4 0.4 0.4 0.4 0.4 0.4
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