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醋酸丁酯檢測(cè)管 乙酸丁酯 乙酸正丁酯 Butyl acetate138U BUTYL ACETATE 10-400ppm 醋酸丁酯檢測(cè)管 BUTYL ACETATE 10-400ppm CH3CO2C4H9用批量生產(chǎn)的氣體檢測(cè)管進(jìn)行氣體分析其精密度誤差應(yīng)是很小的,這是因?yàn)槠鋬?nèi)在質(zhì)量相同,加之使用簡(jiǎn)便,外來(lái)引入誤差很少而造成的,經(jīng)驗(yàn)上一般不會(huì)大于7%。
更新時(shí)間:2024-11-20
在線(xiàn)留言醋酸丁酯檢測(cè)管138U BUTYL ACETATE 10-400ppm CH3CO2C4H9
Tube 38U
1. PERFORMANCE
1) Measuring range :10-400 ppm
Number of pump strokes 1(100ml)
2) Sampling time 1.5 minutes/1 pump stroke
3) Detectable limit :10 ppm
4) Shelf life :1 year
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pale yellow→Pale blue(The top of discoloured layer is to Brown.)
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3CO2(CH2)3CH3+Cr6+H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
400
300
200
150
100
50
30
15
10
20
GAS To pump
DEHUMIDIFIER
(White)
138U BUTYL ACETATE
Substance Interference Coexistence
Esters Similar stain is produced. Higher readings are given.
Alcohols FIG.1 〃〃
Ketones 〃〃
Aromatic hydrocarbons Whole reagent is changed to Pale brown. 〃
0
200
300
100
400
50
Methanol〔ppm〕?
FIG.1 Influence of Methanol
Butyl acetate indicating value 〔ppm〕
1000 2000 3000 4000 5000
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (80°F) (95°F) (95°F)
400 - - 400 235 180 145 120
300 - - 300 185 145 120 100
200 - 345 200 140 110 95 80
150 - 255 150 115 95 80 70
100 - 145 100 80 70 60 50
50 90 65 50 40 35 30 30
30 45 35 30 25 25 20 20
15 20 20 15 15 10 10 10
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