产品详情
简单介绍：
N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S
N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S,N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S N,N-DIMETHYL FORMAMIDE 1-30ppm,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-二甲基甲酰胺(CH3)2NCHO气体检测管 196S
1. PERFORMANCE
1) Measuring range ：2-30 ppm 1-5 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time ：1 minute/1 pump stroke
3) Detectable limit ：0.2 ppm(200ml)
4) Shelf life ：2 years
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(0～20℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 1 pump stroke
8) Colour change ：Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
By reacting with alkali, Amine is produced. Further, PH indicator is discoloured by reacting together with
phosphoric acid.
HCON(CH3)2＋NaOH→HN(CH3)2
HN(CH3)2＋H3PO4→〔(CH3)2NH2〕2HPO4
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
30
25
20
15
10
5
2
100ml
ppm
????
Tube No.
196S N, N-DIMETHYL FORMAMIDE
(NOTE)
When the concectration is below 5 ppm, 2 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration＝1/2×Temperature corrected value
Substance Interference ppm Coexistence
Sulphur dioxide FIG.1 Tafhfeec atecdc.uracy of readings is not 200 Lower readings are given.
Carbon dioxide FIG.2 〃0.1％ 〃
Ammonia Similar stain is produced. Higher readings are given.
Amines 〃〃〃
Hydrazine 〃〃〃
0
15
20
10
5
Sulphur dioxide〔ppm〕?
FIG.1 Influence of Sulphur dioxide
N,N-Dimethyl fomamide
indicating value 〔ppm〕
100 200 300 400 0
15
20
10
5
Carbon dioxide〔％〕?
FIG.2 Influence of Carbon dioxide
N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S,N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S N,N-DIMETHYL FORMAMIDE 1-30ppm,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 ：2-30 ppm 1-5 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time ：1 minute/1 pump stroke
3) Detectable limit ：0.2 ppm(200ml)
4) Shelf life ：2 years
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(0～20℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 1 pump stroke
8) Colour change ：Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
By reacting with alkali, Amine is produced. Further, PH indicator is discoloured by reacting together with
phosphoric acid.
HCON(CH3)2＋NaOH→HN(CH3)2
HN(CH3)2＋H3PO4→〔(CH3)2NH2〕2HPO4
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
30
25
20
15
10
5
2
100ml
ppm
????
Tube No.
196S N, N-DIMETHYL FORMAMIDE
(NOTE)
When the concectration is below 5 ppm, 2 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration＝1/2×Temperature corrected value
Substance Interference ppm Coexistence
Sulphur dioxide FIG.1 Tafhfeec atecdc.uracy of readings is not 200 Lower readings are given.
Carbon dioxide FIG.2 〃0.1％ 〃
Ammonia Similar stain is produced. Higher readings are given.
Amines 〃〃〃
Hydrazine 〃〃〃
0
15
20
10
5
Sulphur dioxide〔ppm〕?
FIG.1 Influence of Sulphur dioxide
N,N-Dimethyl fomamide
indicating value 〔ppm〕
100 200 300 400 0
15
20
10
5
Carbon dioxide〔％〕?
FIG.2 Influence of Carbon dioxide