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上海境宣實業有限公司
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當前位置:上海境宣實業有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 190U四氫噻吩C4H8S氣體檢測管190U Tetrahydrothiophene 4-100ppm

四氫噻吩C4H8S氣體檢測管190U Tetrahydrothiophene 4-100ppm

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產品型號190U

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廠商性質代理商

所  在  地上海市

更新時間:2024-12-19 10:44:54瀏覽次數:2276次

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四氫噻吩C4H8S氣體檢測管190U Tetrahydrothiophene 4-100ppm,四氫噻吩主要用作城市煤氣、天然氣等氣體燃料的賦臭劑即警告劑。也可用作醫藥、農藥和光化學品生產的原料。健康危害: 本品具有麻醉作用。小鼠吸入中毒時,出現運動性興奮、共濟失調、麻醉,Z后死亡。慢性中毒實驗中,小鼠表現為行為異常、體重增長停頓及肝功能改變。對皮膚有弱刺激性。環境危害: 對水體可造成污染

四氫噻吩C4H8S氣體檢測管190U Tetrahydrothiophene 4-100ppm

Tube 90U
0
30
40
50
20
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500
(300ml)? (100ml)?
0
300
400
500
200
100
1,1,1-Trichloroethane〔ppm〕?
FIG.2 Influence of 1,1,1-Trichloroethane
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500 600
(300mR)?
1. PERFORMANCE
1) Measuring range :5-500 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :2 ppm
4) Shelf life :2 years
5) Operating temperature :10~35℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
C2H5OCH2CH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
500
200
150
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
?? ?? ??
????
????
190U ETHYL CELLOSOLVE
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Ethers 〃〃
(Pmaroarfefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.2 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
(ppm) (50°F) (59°F) (68°F) (77°F) (80°F) (95°F)
500 800 620 500 410 335 265
400 620 490 400 325 260 200
300 450 365 300 245 195 145
200 290 245 200 160 125 95
150 215 185 150 120 90 70
100 145 125 100 80 60 45
50 75 65 50 40 30 25
20 30 25 20 15 12 10
5 10 7 5 4 3 2

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