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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>196SN,N-二甲基甲酰胺(CH3)2NCHO 196S N,N-DIMETHYL FORMAMIDE

N,N-二甲基甲酰胺(CH3)2NCHO 196S N,N-DIMETHYL FORMAMIDE

简要描述:

日本光明理化检测管,创立于1947年,是日本气体检测管的创始人,气体检测管和AP-20检测仪一起使用可以检测400种气体。比长式气体检测管在不用任何能源,电源的情况下,能够快速检测,具有操作简单,携带方便等特点,并可在空气中对有害气体的检测.气体检测管,活性炭管,硅胶采样管,采气袋,吸收瓶,测尘滤膜等耗材,采集室內外大气环境及车间现场中的一氧化碳,二氧化硫,氮氧化物气体的检测N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S N,N-DIMETHYL FORMAMIDE 1-30ppm

更新时间:2017-07-12

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N,N-二甲基甲酰胺(CH3)2NCHO 196S N,N-DIMETHYL FORMAMIDE

N,N-二甲基甲酰胺(CH3)2NCHO气体检测管 196S N,N-DIMETHYL FORMAMIDE 1-30ppm


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

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