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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糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm

糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm

简要描述:

检测管不仅可用于室内空气检测、公共场所的空气质量监测、作业现场的空气及特定气体的测试、大气环境检测等许多方面,也被用于许多需要控制气体成分的生产工艺中。检测管是掌握和分析气体成分和浓度的有效、安全和简便的方法。糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm,气体检测管是用来测定某种气体在某一环境中所含浓度的简易检测装置。通过检测剂与被检测气体的反应而出现颜色变化、来表示所测环境中的气体浓度。具有操作简单、使用范围广泛、检测凖确、实时性强和经济的特点。

更新时间:2017-07-29

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糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm

糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm

Tube No.190U
1. PERFORMANCE
1) Measuring range :2-60 ppm
Number of pump strokes 3(300 ml)
2) Sampling time :4.5 minutes / 3 pump strokes
3) Detectable limit :0.5 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 Ethyl cellosolve at 3 pump
strokes and Furfural concentration is determined by using a conversion chart.
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH=CH
O +H2SO4+Cr6+→Cr3+
CH=C-CHO
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
300
200
150
100
50
20
5
ppm
(White)
DEHUMIDIFIER
190U C FURFURAL
Substance ppm Interference Coexistence
Alcohols Similar stains are produced and higher
readings are given.
Toluene 200 Whole reagent is changed to Pale orange. Unclear stains are produced.
TEMPERATURE CORRECTION TABLE
Conver. Corrected Concentration (ppm)
value 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
60 - - 60 50 45
50 - 71 50 45 40
40 - 53 40 35 35
30 63 35 30 30 30
20 25 22 20 20 20
15 17 15 15 15 15
10 10 10 10 10 10
5 5 5 5 5 5
2 2 2 2 2 2
No.190U Tube reading (ppm)�
(300mR)�
Furfural(ppm)�
500
400
300
200
100
50
20
5
2
5
10
20
30
40
50

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