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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>120SB硫化氢H2S气体检测管120SB HYDROGEN SULPHIDE 0.75-300ppm

硫化氢H2S气体检测管120SB HYDROGEN SULPHIDE 0.75-300ppm

简要描述:

硫化氢H2S气体检测管120SB HYDROGEN SULPHIDE 0.75-300ppm,污染来源:硫化氢很少用于工业生产中,一般作为某些化学反应和蛋白质自然分解过程的产物以及某些天然物的成分和杂质,而经常存在于多种生产过程中以及自然界中。如采矿和有色金属冶炼。煤的低温焦化,含硫石油开采、提炼,橡胶、制革、染料、制糖等工业中都有硫化氢产生。开挖和整治沼泽地、沟渠、印染、下水道、隧道以及清除垃圾、粪便等作业,还有天然气、火山喷气、矿泉中也常伴有硫化氢存在。

更新时间:2017-07-14

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硫化氢H2S气体检测管120SB HYDROGEN SULPHIDE 0.75-300ppm

硫化氢H2S气体检测管120SB HYDROGEN SULPHIDE 0.75-300ppm

Tube No.120SB

1. PERFORMANCE
1) Measuring range :3-150 ppm 1-50 ppm 0.75-37.5 ppm 6-300 ppm
Number of pump strokes 1(100ml) 3(300ml) 4(400ml) 1/2(50ml)
2) Sampling time :1 minutes/1 pump stroke
3) Detectable limit :0.3 ppm(300ml)
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :White→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with Lead acetate(II), Lead sulphide is produced.
H2S+Pb(CH3CO2)2→PbS+2CH3CO2H
4. CALIBRATION OF THE TUBE
PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
6 3
100ml
ppm
􀀀
􀀀􀀀
120SB HYDROGEN SULPHIDE
Substance Interference ppm Coexistence
Sulphur dioxide FIG.1 Tish neo at cacffuercatceyd .of readings 12 Higher readings are given.
Mercaptans FIG.2 〃550 〃
Nitrogen dioxide FIG.3 〃2 Lower readings are given.
(NOTE)
In case of 1 / 2, 2, 3 or 4 pump strokes, following formula is available for the actual concentration.
Actual concentration=Reading value ×
0
60
80
20
Sulphur dioxide〔ppm〕�
FIG.1 Influence of Sulphur dioxide
Hydrogen sulphide indicating value 〔ppm〕
200 400
300ml
0
60
80
20
Ethyl mercaptan〔ppm〕�
FIG.2 Influence of Ethyl mercaptan
Hydrogen sulphide indicating value 〔ppm〕
200 400 600
300ml
0
100
150
50
Nitrogen dioxide〔ppm〕�
FIG.3 Influence of Nitrogen dioxide

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