120UH 硫化氢H2S气体观测管120UH HYDROGEN SULPHIDE 2-20%
- 公司名称 上海境宣实业有限公司
- 品牌
- 型号 120UH
- 产地 日本
- 厂商性质 代理商
- 更新时间 2025/5/12 19:30:37
- 访问次数 1099
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硫化氢H2S气体观测管120UH HYDROGEN SULPHIDE 2-20%
Tube 20UH
1. PERFORMANCE
1) Measuring range :2-20%
Number of pump strokes 1/2(50ml)
2) Sampling time :1 minute/1/ 2 pump stroke
3) Detectable limit :0.05%
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 /2 pump stroke
7) Colour change :Pale blue→Black
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with Cupric sulphate(II), Cupric sulphide is produced.
H2S+CuSO4→CuS
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
20
18
16
14
12
10
8
6
4
2
50ml
%
120UH HYDROGEN SULPHIDE
(NOTE)
1. Where the discolouration is over the scale, non-reacted Hydrogen sulphide remains in the pump. This residual
Hydrogen sulphide is not exhausted even if the pump handle is pushed back, and it still remains in the pump.
When the handle is pulled next, it is exhausted toward the operator from the stopper side of the pump.
Accordingly, air purging of the pump inside by pulling/pushing the handle several times should be done in
fresh air where there is not Hydrogen sulphide, because Hydrogen sulphide is very toxic. During the air
purging, protection apparatus such as a gas mask should be worn.
2. Maximum sampling volume of the gas shall be approximay 70mr.
Substance Interference Coexistence
Sulphur dioxide FIG.1 The accuracy of readings is not affected. Lower readings are given.
Carbon dioxide The accuracy of readings is
not affected.
0 2 4
20
Sulphur dioxide〔%〕�
FIG.1 Influence of Sulphur dioxide
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