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丙烯腈氣體檢測管184S ALLYL ALCOHOL (+) CH2=CHCN 0.1-3.5%,氣體檢測管是用來檢測某種氣體在某一環(huán)境中所含濃度的簡易檢測裝置,通過檢測劑與被檢測氣體的反應(yīng)而出現(xiàn)顏色變化,來表示所測環(huán)境中的氣體濃度。在不用任何能源、電源的情況下,具有操作簡單、使用范圍廣、檢測準(zhǔn)確、即時(shí)性強(qiáng)和經(jīng)濟(jì)的特點(diǎn)。
更新時(shí)間:2024-12-18
在線留言丙烯腈氣體檢測管184S ALLYL ALCOHOL (+) CH2=CHCN 0.1-3.5%
Tube 84S
1. PERFORMANCE
1) Measuring range :20-500 ppm
Number of pump strokes 1(100mr)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :5 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(10~40℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Graduations printed on the tube are calibrated by Methyl methacrylate at 1 pump
stroke and Allyl alcohol concentration is determined by using a converstion chart.
8) Colour change :Pale yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
H2C=CHCH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
20
40
60
80
100
120
140
160
10
100ml
ppm
GAS To pump
184S C ALLYL ALCOHOL
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Ethers 〃〃
Paraffin hydrocarbons(more than C3) Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.1 〃〃
0
200
100
300
400
500
1,1,1-Trichloroethane〔ppm〕?
FIG.1 Influence of 1,1,1-Trichloroentane
Methyl methacrylate indicating value 〔ppm〕
100 200 300 400 500 600
50
Concentration of Allyl alcohol(ppm)?
Scale printed of Methyl methacrylate(ppm)?
10
20
40
60
80
100
120
140
20
100
200
300
400
500
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
500 - 600 500 430 380
400 - 480 400 350 300
300 480 360 300 260 230
200 320 240 200 170 150
100 240 120 100 90 80
50 80 60 50 43 38
20 32 24 20 17 15
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