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简单介绍：
N,N-二甲基乙酰胺(CH3)2NCOCH3气体检测管229S
N,N-二甲基乙酰胺(CH3)2NCOCH3气体检测管229S,N,N-二甲基乙酰胺(CH3)2NCOCH3气体检测管229S 5-70ppm,日本光明理化工业株式会社从1947年开始，在气体分析领域开拓了六十余年 , 形成了驰名于世的 ” 北川 ” 式气体检测管
详情介绍：
N,N-二甲基乙酰胺(CH3)2NCOCH3气体检测管229S
N,N-二甲基乙酰胺(CH3)2NCOCH3气体检测管229S,N,N-二甲基乙酰胺(CH3)2NCOCH3气体检测管229S 5-70ppm,日本光明理化工业株式会社从1947年开始，在气体分析领域开拓了六十余年 , 形成了驰名于世的 ” 北川 ” 式气体检测管。气体快速分析法 ” 北川 ” 的历史就是日本检测管的历史 。目前是世界上*大的检测管生产厂家，也是日本**家通过美国SEI的认证，欧盟的认证的检测管厂家。公司不仅有ISO9001:2000的认证，还获得了环境管理的ISO14001的认证。北川式手动气体采集器AP-20 备有采气完成指示计 , 可以清楚的判明采气是否完成 . • 有专门截留玻璃的截留槽 , 以防止检测管割尖时玻璃片飞溅 . • 有采气容积为 50 毫升和 100 毫升的两段式制动卡 . • 采气器极为小巧 , 并有便于携带的皮具包 。
1. PERFORMANCE
1) Measuring range ：5-70 ppm
Number of pump strokes 2(200ml)
2) Sampling time ：2 minutes/1 pump stroke
3) Detectable limit ：1 ppm
4) Shelf life ：1 year
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary under 20℃(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 2 pump strokes
8) Colour change ：Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：15％ RSD-mid.：15％ RSD-high：15％
3. CHEMICAL REACTION
By reacting with Alkali, Dimethyl amine is produced. Dimethyl amine reacts on Phosphoric acid and
PH indicator is discoloured.
CH3CON(CH3)2→HN(CH3)2
2HN(CH3)2＋H3PO4→〔(CH3)2NH2〕2HPO4
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
70
60
50
40
30
20
10
5
100ml
ppm
????
Tube No.
229S N, N-DIMETHYL ACETAMIDE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20-40℃
(ppm) (50°F) (59°F) (68-104°F)
70 120 84 70
60 102 70 60
50 85 60 50
40 67 47 40
30 50 36 30
20 35 23 20
10 17 12 10
5 10 6 5
Substance Interference Coexistence
Carbon dioxide Not affected. 0.17％ Lower readings are given.
Ammonia Similar stain is produced. Higher readings are given.
Amines 〃〃
Hydrazine 〃〃
1) Measuring range ：5-70 ppm
Number of pump strokes 2(200ml)
2) Sampling time ：2 minutes/1 pump stroke
3) Detectable limit ：1 ppm
4) Shelf life ：1 year
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary under 20℃(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 2 pump strokes
8) Colour change ：Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：15％ RSD-mid.：15％ RSD-high：15％
3. CHEMICAL REACTION
By reacting with Alkali, Dimethyl amine is produced. Dimethyl amine reacts on Phosphoric acid and
PH indicator is discoloured.
CH3CON(CH3)2→HN(CH3)2
2HN(CH3)2＋H3PO4→〔(CH3)2NH2〕2HPO4
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
70
60
50
40
30
20
10
5
100ml
ppm
????
Tube No.
229S N, N-DIMETHYL ACETAMIDE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20-40℃
(ppm) (50°F) (59°F) (68-104°F)
70 120 84 70
60 102 70 60
50 85 60 50
40 67 47 40
30 50 36 30
20 35 23 20
10 17 12 10
5 10 6 5
Substance Interference Coexistence
Carbon dioxide Not affected. 0.17％ Lower readings are given.
Ammonia Similar stain is produced. Higher readings are given.
Amines 〃〃
Hydrazine 〃〃