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當(dāng)前位置:上海境宣實業(yè)有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 102SA四氫呋喃(CH2)4O氣體檢測管102SA TETRAHYDROFURAN 0.2-5.0%
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產(chǎn)品型號102SA
品 牌
廠商性質(zhì)代理商
所 在 地上海市
更新時間:2024-12-11 10:24:48瀏覽次數(shù):3147次
聯(lián)系我時,請告知來自 化工儀器網(wǎng)室內(nèi)空氣甲醛檢測管No.713 FORMALDEHYDE 0.01-0
氯乙烯CH2=CHCl氣體測毒管132SC VINYL CHLORID
氯乙烯CH2=CHCl氣體檢知管132SB VINYL CHLORID
四氫呋喃(CH2)4O氣體檢測管102SA TETRAHYDROFURAN 0.2-5.0%
1. PERFORMANCE
1) Measuring range :2.0-5.0% 0.2-3.0%
Number of pump strokes 1/2(50ml) 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :20 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Graduations printed on the tube are calibrated by Acetone at 1 pump stroke and
Tetrahydrofuran is determined by using a conversion chart.
8) Colour change :Orange→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH2-CH2
O+Cr6++H2SO4→Cr3+
CH2-CH2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
0.1
0.2
0.5
1.0
1.5
2.0
%
GAS To pump
Tube No.
102SA C TETRAHYDROFURAN
Substance Interference ppm Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Atromatic hydrocarbons FIG.1 〃〃
Ketones 〃〃
Esters FIG.2 〃〃
Halogenated hydrocarbons WPahleo leb rroewang.ent is changed to 0.5% 〃
(NOTE)
In case of 1 / 2 pump stroke, following conversion scale is available for actual concentration.
0
2
3
1
Toluene〔%〕?
FIG.1 Influence of Toluene
Tetra-hydrofuran
indicating value 〔%〕
Tetra-hydrofuran
indicating value 〔%〕
1 2
Interference
0
2
3
1
Ethyl acetate〔%〕?
FIG.2 Influence of Ethyl acetate
1 2
0.1 0.2
0.2
0.5
1.0
1.5
2.0
0.5
1.0
1.5
2.0
2.5
3.0
Tetrahydrofuran concentration(%)?
02SA tude reading(%)?
(100mR)?
0.1
0.2
0.5
1.0
1.5
2.0
2.0
3.0
4.0
5.0
Tetrahydrofuran concentration(%)?
02SA tude reading(%)?
(50mR)?
TEMPERATURE CORRECTION TABLE
Scale True Concentration (%)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(%) (32°F) (50°F) (68°F) (86°F) (104°F)
3.0 - 3.2 3.0 2.8 2.7
2.5 3.0 2.7 2.5 2.4 2.2
2.0 2.4 2.1 2.0 1.9 1.8
1.5 1.8 1.6 1.5 1.4 1.3
1.0 1.1 1.1 1.0 1.0 0.9
0.5 0.6 0.5 0.5 0.5 0.5
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