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硫化氫H2S氣體檢測管120U HYDROGEN SULPHIDE 0.2-6.0ppm，豫東電子是一家集研發、生產、銷售為一體的各種比長式氣體檢測管專業生產廠家,主要有氣體檢測管、一氧化碳檢測管、硫化氫檢測管、磷化氫檢測管、氨氣檢測管等產品。產品廣泛應用于煤炭、冶金、倉儲、建材、化工、焦化、環保等行業。
更新時間：2025-08-20
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硫化氫H2S氣體檢測管120U HYDROGEN SULPHIDE 0.2-6.0ppm
Tube 20U
1. PERFORMANCE
1） Measuring range ：0.4-6.0 ppm 0.2-3.0 ppm
Number of pump strokes 1/2（50ml） 1（100ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.05 ppm（100ml）
4） Shelf life ：2 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：Pale yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
By reacting with Mercury chloride（II）, Hydrogen chloride is produced and PH indicator is discoloured.
H2S＋HgCI2→HgS＋HCI
4. CALIBRATION OF THE TUBE
PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
3.0
2.5
2.0
1.5
1.0
0.5
0.2
100ml
ppm
（White）
DEHUMIDIFIER
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120U HYDROGEN SULPHIDE
Substance Interference Coexistence
Whole reagent is changed to Pale red,
Sulphur dioxide but Purplish red stain is indicated H2S
FIG.1 concentration.
Hydrogen selenide Similar stain is produced. Higher readings are given.
Arsine 〃〃
Mercaptans FIG.2 〃〃
Phosphine 〃〃
Hydrogen cyanide Whole reagent is changed to Red. 〃
Coexistence
Interference
0
2
3
1
Sulphur dioxide〔ppm〕?
FIG.1 Influence of Sulphur dioxide
Hydrogen sulphide indicating value 〔ppm〕
1 2 3 4 5
Coexistence
Interference
0
2
3
1
Ethyl mercaptan〔ppm〕?
FIG.2 Influence of Ethyl mercaptan
Hydrogen sulphide indicating value 〔ppm〕
（NOTE）
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration＝2×Reading value
上一篇：120SM硫化氫H2S氣體檢測管120SM HYDROGEN SULPHIDE 0.05-1.2%
下一篇：120UH硫化氫H2S氣體觀測管120UH HYDROGEN SULPHIDE 2-20%
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