122SA 环氧乙烷CH2CH2O气体检测管122SA ETHYLENE OXIDE 0.01-4%
- 公司名称 上海境宣实业有限公司
- 品牌
- 型号 122SA
- 产地 日本
- 厂商性质 代理商
- 更新时间 2025/5/12 18:23:57
- 访问次数 1294
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环氧乙烷CH2CH2O气体检测管122SA ETHYLENE OXIDE 0.01-4%
Tube 22SA
1. PERFORMANCE
1) Measuring range :1.0-4.0% 0.01-1.8%
Number of pump strokes :1/2(50ml) 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :50 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Orange→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Potassium dichomate is reduced.
CH2CH2O+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
(White)
DEHUMIDIFIER
GAS To pump
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.1
0.01
%
122SA ETHYLENE OXIDE
Substance Interference ppm Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Esters FIG.2 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Halogenated hydrocarbons WPahleo leb rroewang.ent is discoloured to 0.5% 〃
Ethanol is indicated with half the sensitivity, Ethyl acetate has the same sensitivity with Ethylene oxide.
(NOTE)
1)If the discolouration exceeds the scale, replace the tube with new one and pull the handle at half stroke(to 50mr
line). And read the concentration.
2)Correct the reading value with the temperature correction table first, and convert the value into an actual
concentration by using the conversion scale shown in the instruction sheet.
0
2.0
1.5
1.0
0.5
Methanol〔%〕�
FIG.1 Influence of Methanol
Ethylene oxide indicating value 〔%〕
0.2 0.4 0.6
Coexistence
Interference
0
2.0
1.5
1.0
0.5
Ethyl acetate〔%〕�
FIG.2 Influence of Ethyl acetate
Ethylene oxide indicating value 〔%〕
0.2 0.4 0.6
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Scale True Concentration (%)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(%) (32°F) (50°F) (68°F) (86°F) (104°F)
1.8 - 2.00 1.80 1.70 1.64
1.6 2.06 1.78 1.60 1.50 1.46
1.4 1.84 1.58 1.40 1.35 1.28
1.2 1.60 1.34 1.20 1.14 1.09
1.0 1.31 1.12 1.00 0.93 0.88
0.8 1.08 0.91 0.80 0.73 0.68
0.6 0.86 0.70 0.60 0.54 0.49
0.4 0.63 0.49 0.40 0.34 0.30
0.2 0.36 0.26 0.20 0.16 0.13
0.1 0.20 0.14 0.10 0.08 0.06
0.01 0.05 0.02 0.01 0.01 0.01
Conversion
scale (I)
(50mR actual value)�
(100mR concentration scale)�
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