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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>128SD丙烯腈检测管128SD ACRYLONITRILE CH2=CHCN 0.2-20ppm

丙烯腈检测管128SD ACRYLONITRILE CH2=CHCN 0.2-20ppm

简要描述:

丙烯腈检测管128SD ACRYLONITRILE CH2=CHCN 0.2-20ppm,气体检测管是用来检测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。在不用任何能源、电源的情况下,具有操作简单、使用范围广、检测准确、即时性强和经济的特点。

更新时间:2017-09-01

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丙烯腈检测管128SD ACRYLONITRILE CH2=CHCN 0.2-20ppm

丙烯腈检测管128SD ACRYLONITRILE CH2=CHCN 0.2-20ppm

Tube No.128SD
1. PERFORMANCE
1) Measuring range :1-20 ppm 0.5-10 ppm 0.25-5 ppm 0.2-4 ppm
Number of pump strokes 1(100mr) 2(200mr) 4(400mr) 5(500mr)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :0.05ppm(500mr)
4) Shelf life :1 year (Necessary to store in refrigerated place ; 0~10℃)
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Yellow→Red
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Hydrogen cyanide is produced, Hydrogen cyanide reacts with Mercuric
chloride, then Hydrogen chloride is liberated and PH indicator is discoloured.
CH2=CHCN+CrO3+H2SO4→HCN
HCN+HgCI2→HCI
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
125
15
20
10
ppm
100ml
GAS To pump
(Reddish brown)
PRETREAT TUBE DETECTOR TUBE
128SD ACRYLONITRILE
Substance Interference ppm Coexistence
Butadiene
Less than
350 ppm Not affected.
Toluene
Less than
600 ppm 〃
Hexane
Less than
800 ppm 〃
Styrene
Less than
720 ppm 〃
(NOTE)
In case of 2 to 5 pump strokes can be used to detemine the lower concentration.
Following formula is available for actual concentration.
Actual concentration=Tmperature corrected value×
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
20 26 22.5 20 18 17
18 23 20 18 16.5 15.5
16 20.5 18 16 15 14
14 18 15.5 14 13 12
12 15.5 13.5 12 11 10.5
10 13 11 10 9.5 9
8 10.5 9 8 7.5 7
6 8 7 6 6 5.5
4 5.5 4.5 4 4 4
2 3 2 2 2 2
1 1.5 1 1 1 1
1
Number of strokes
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