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简单介绍：
光明理化甲醛HCHO气体检测171SC
光明理化甲醛HCHO气体检测171SC，光明理化甲醛HCHO气体检测171SC FORMALDEHYDE 0.05-4.0ppm，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：
光明理化甲醛HCHO气体检测171SC
光明理化甲醛HCHO气体检测171SC，光明理化甲醛HCHO气体检测171SC FORMALDEHYDE 0.05-4.0ppm，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.171SC
1. PERFORMANCE
1) Measuring range ：0.1-4.0 ppm 0.05-2.0 ppm
Number of pump strokes 5(500mr) 10(1000ml)
2) Sampling time ：5 minutes/5 pump strokes
3) Detectable limit ：0.03 ppm(1000ml)
4) Shelf life ：1 year (Necessary to store in a refrigerated place ; 0～10℃)
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 5 pump strokes
8) Colour change ：Yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
By reaction with Hydroxylamine phosphate acid is liberated and PH indicator is discoloured.
HCHO＋(NH3OH)3?H3PO4→H3PO4＋HCH＝NOH＋H2O
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
4.0
3.0
2.0
1.0
0.1
0.5
0.3
500ml
ppm
(White)
DEHUMIDIFIER
171SC FORMALDEHYDE
Substance ppm Interference ppm Coexistence
Ammonia
The accuracy of readings is 10 Lower readings are given. Inlet
not affected. side is faded the discoloured layer.
Higher readings are given. The
Nitrogen dioxide 3 Similar stain is produced. 3 top of discoloured layer becomes
unclear.
Acetaldehyde 〃Higher readings are given.
Toluene
The accuracy of readings is
not affected.
TEMPERATURE CORRECTION TABLE
Tube Corrected Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
4.0 6.4 4.0 2.4 1.6
3.5 5.6 3.5 2.1 1.4
3.0 4.8 3.0 1.8 1.2
2.5 4.0 2.5 1.5 1.0
2.0 3.2 2.0 1.2 0.8
1.5 2.4 1.5 0.9 0.6
1.0 1.6 1.0 0.6 0.4
0.5 0.8 0.5 0.3 0.2
0.3 0.5 0.3 0.18 0.12
0.1 0.16 0.1 0.06 0.04
(NOTE)
In case of 10 pump strokes, following formula is available for the actual concentration.
Actual concentration ＝ 1/2 × Tmperature corrected value
1. PERFORMANCE
1) Measuring range ：0.1-4.0 ppm 0.05-2.0 ppm
Number of pump strokes 5(500mr) 10(1000ml)
2) Sampling time ：5 minutes/5 pump strokes
3) Detectable limit ：0.03 ppm(1000ml)
4) Shelf life ：1 year (Necessary to store in a refrigerated place ; 0～10℃)
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 5 pump strokes
8) Colour change ：Yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
By reaction with Hydroxylamine phosphate acid is liberated and PH indicator is discoloured.
HCHO＋(NH3OH)3?H3PO4→H3PO4＋HCH＝NOH＋H2O
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
4.0
3.0
2.0
1.0
0.1
0.5
0.3
500ml
ppm
(White)
DEHUMIDIFIER
171SC FORMALDEHYDE
Substance ppm Interference ppm Coexistence
Ammonia
The accuracy of readings is 10 Lower readings are given. Inlet
not affected. side is faded the discoloured layer.
Higher readings are given. The
Nitrogen dioxide 3 Similar stain is produced. 3 top of discoloured layer becomes
unclear.
Acetaldehyde 〃Higher readings are given.
Toluene
The accuracy of readings is
not affected.
TEMPERATURE CORRECTION TABLE
Tube Corrected Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
4.0 6.4 4.0 2.4 1.6
3.5 5.6 3.5 2.1 1.4
3.0 4.8 3.0 1.8 1.2
2.5 4.0 2.5 1.5 1.0
2.0 3.2 2.0 1.2 0.8
1.5 2.4 1.5 0.9 0.6
1.0 1.6 1.0 0.6 0.4
0.5 0.8 0.5 0.3 0.2
0.3 0.5 0.3 0.18 0.12
0.1 0.16 0.1 0.06 0.04
(NOTE)
In case of 10 pump strokes, following formula is available for the actual concentration.
Actual concentration ＝ 1/2 × Tmperature corrected value