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简单介绍：
北川式甲基碘CH3I气体检测管176S ，甲基碘CH3I气体检测管176S
北川式甲基碘CH3I气体检测管176S ，甲基碘CH3I气体检测管176S METHYL IODIDE 2-40ppm
详情介绍：
北川式甲基碘CH3I气体检测管176S ，甲基碘CH3I气体检测管176S
北川式甲基碘CH3I气体检测管176S ，甲基碘CH3I气体检测管176S METHYL IODIDE 2-40ppm，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 。
Tube No.176S
1. PERFORMANCE
1) Measuring range ：4-40 ppm 2-20 ppm
Number of pump strokes 2(200ml) 4(400ml)
2) Sampling time ：4 minutes/2 pump strokes
3) Detectable limit ：0.5 ppm(400ml)
4) Shelf life ：8 months
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 2 pump strokes
8) Colour change ：White→Grey
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Iodine pentoxide is reduced.
CH3I＋I2O5＋H2SO4→I2＋CO2＋H2O
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
40
35
30
25
20
15
10
468
ppm
GAS To pump
(Yellow)
PRETREAT TUBE DETECTOR TUBE
176S METHYL IODIDE
Substance Interference ppm Coexistence
Acetone Similar stain is produced. 700 Higher readings are given.
Hydrogen sulphide FIG.1 〃7 〃
Hexane FIG.2 〃500 〃
Benzene 2 Lower readings are given.
Toluene 2 〃
Xylene 2 〃
Halogenated hydrocarbons Double-layer stain is produced and
accurate readings are affected.
0
30
20
Hydrogen sulphide〔ppm〕?
FIG.1 Influence of Hydrogen sulphide
Methyl iodide
indicating value 〔ppm〕
510 15 20 25 3035
10
0
20
Hexane〔ppm〕?
FIG.2 Influence of Hexane
Methyl iodide
indicating value 〔ppm〕
500 1000 1500 2000 2500
10
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
40 － － 40 46 52
35 － 52 35 42 49
30 54 39 30 37 44
25 37 27 25 25 23
20 30 22 20 23 30
15 24 17 15 17 24
10 17 11 10 12 17
5 10 5 5 5 10
(NOTE)
In case of 4 pump strokes, following formula is available for the actual concentration.
Actual concentration ＝ 1/2 × Tmperature corrected value
1. PERFORMANCE
1) Measuring range ：4-40 ppm 2-20 ppm
Number of pump strokes 2(200ml) 4(400ml)
2) Sampling time ：4 minutes/2 pump strokes
3) Detectable limit ：0.5 ppm(400ml)
4) Shelf life ：8 months
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 2 pump strokes
8) Colour change ：White→Grey
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Iodine pentoxide is reduced.
CH3I＋I2O5＋H2SO4→I2＋CO2＋H2O
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
40
35
30
25
20
15
10
468
ppm
GAS To pump
(Yellow)
PRETREAT TUBE DETECTOR TUBE
176S METHYL IODIDE
Substance Interference ppm Coexistence
Acetone Similar stain is produced. 700 Higher readings are given.
Hydrogen sulphide FIG.1 〃7 〃
Hexane FIG.2 〃500 〃
Benzene 2 Lower readings are given.
Toluene 2 〃
Xylene 2 〃
Halogenated hydrocarbons Double-layer stain is produced and
accurate readings are affected.
0
30
20
Hydrogen sulphide〔ppm〕?
FIG.1 Influence of Hydrogen sulphide
Methyl iodide
indicating value 〔ppm〕
510 15 20 25 3035
10
0
20
Hexane〔ppm〕?
FIG.2 Influence of Hexane
Methyl iodide
indicating value 〔ppm〕
500 1000 1500 2000 2500
10
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
40 － － 40 46 52
35 － 52 35 42 49
30 54 39 30 37 44
25 37 27 25 25 23
20 30 22 20 23 30
15 24 17 15 17 24
10 17 11 10 12 17
5 10 5 5 5 10
(NOTE)
In case of 4 pump strokes, following formula is available for the actual concentration.
Actual concentration ＝ 1/2 × Tmperature corrected value