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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>190U二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm

二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm

简要描述:

二丙酮醇又名双丙酮醇 DIACETONE ALCOHOL 英文简称DAA,190U DIACETONE ALCOHOL (+) 10-250ppm (CH3)2C(OH)CH2COCH3,二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm,一种联管式气体检测管,它属于气体快速检测装置,该检测管的结构是在玻璃管内填充两种不同的被测气体指示粉,指示粉由载体和反应剂混合而成,载体可以选择石英砂、硅胶、玻璃粉等,玻璃管外壁对应于两种不同的指示粉部位分别标有表明被测气体浓度

更新时间:2017-07-14

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二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm

二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm

1. PERFORMANCE
1) Measuring range :10-250 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :1 ppm
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Graduations printed on the tube are calibrated by Ethyl cellosolve at 3 pump strokes
and Diacetone alcohol concentration is determined by using a conversion chart.
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
(CH3)2C(OH)CH2COCH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
200
150
500
400
300
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
Tube No.
DIACETONE ALCOHOL
92
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Halogenated hydrocarbons 〃
Aliphatic hydrocarbons Whole reagent is discoloured to It the top of Pale blue stain is clear,the
Pale brown. accuracy of readings is not affected.
Aromatic hydrocarbons 〃〃
Esters 〃〃
0
20
30
40
50
10
Ethanol〔ppm〕�
FIG.1 Influence of Ethanol
Diacetone indicating value 〔ppm〕
50 100
Coexistence
Interference
Diacetone alcohol(ppm)�
No.190U Tube reading(ppm)

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