137U 氢气H2气体检测管137U HYDROGEN 0.05-0.8%
- 公司名称 上海境宣实业有限公司
- 品牌
- 型号 137U
- 产地 日本
- 厂商性质 代理商
- 更新时间 2025/5/12 19:01:16
- 访问次数 1219
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氢气H2气体检测管137U HYDROGEN 0.05-0.8%
Tube 37U
1. PERFORMANCE
1) Measuring range :0.05-0.8%
Number of pump strokes 1/2(50ml)
2) Sampling time :0.5minutes/1/2 pump stroke
3) Detectable limit :0.03%
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 /2 pump strokes
8) Colour change :Yellow→Green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with Oxygen in Atomsphere, water vapour is produced. This Water vapour reacts with Magnesium
perchlorate and PH indicator is discoloured.
H2+O2→H2O
H2O+Mg(CIO4)2→Mg(CIO4)2・H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.15
0.10
0.05
50ml
%
137U HYDROGEN
Substance % Interference ppm Coexistence
Ethanol FIG.1 0.25 Similar stain is produced. 0.4% Higher readings are given.
Carbon monoxide Tafhfeec atecdc.urate readings are not 500 Lower readings are given.
6.SPECIAL NOTE
1)The tube will not respond in the absence of oxygen.
2)When the concentration of Hydrogen is 12 to 16%, pretreat reagent gives a heat but is not dangerous for use
in hazardous area.
3)When the concentration of Hydrogen is over 40%, the reading value may be indicated below 0.8%.In this
case, the bottom of the discoloured layer becomes dark purple. In order to make sure that the concentration is
extremely high such as 40%, measure the gas concentration with connecting 2 tubes. If both tubes are
discoloured to green, extremely high concentration Hydrogen exists.
0
0.4
0.5
0.3
0.2
0.1
Ethanol〔%〕�
FIG.1 Influence of Ethanol
Hydrogen indicating value 〔%〕
0.5 1.0
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Scale True Concentration (%)
Readings 0℃ 5℃ 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(%) (32°F) (41°F) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
0.8 - - - - 0.8 0.68 0.58 0.51 0.45
0.7 - - - 1.00 0.7 0.60 0.52 0.45 0.40
0.6 - - 1.00 0.80 0.6 0.52 0.44 0.39 0.35
0.5 - - 0.80 0.65 0.5 0.44 0.37 0.33 0.30
0.4 - - 0.62 0.51 0.4 0.35 0.30 0.27 0.25
0.3 - 0.70 0.46 0.37 0.3 0.28 0.23 0.21 0.19
0.2 0.65 0.47 0.30 0.25 0.2 0.18 0.16 0.14 0.13
0.15 0.46 0.34 0.22 0.19 0.15 0.13 0.12 0.11 0.10
0.1 0.28 0.21 0.15 0.12 0.1 0.09 0.08 0.08 0.07
0.06 0.13 0.10 0.07 0.06 0.05 0.05 0.05 0.05 0.05
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