硫化氫H2S氣體檢測管120SM HYDROGEN SULPHIDE 0.05-1.2%

1. PERFORMANCE
1） Measuring range ：0.1-1.2％ 0.05-0.6％
Number of pump strokes 1/2（50ml） 1（100ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.001％（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 ：White→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low：5％　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
0.6
0.5
0.4
0.3
0.2
0.1
0.05
100ml
%
????
120SM HYDROGEN SULPHIDE
Coexistence
Interference
0
1000
1500
500
Nitrogen dioxide〔ppm〕?
FIG.1 Influence of Nitrogen dioxide
Hydrogen sulphide indicating value 〔ppm〕
500 1000 0
1000
1500
500
Sulphur dioxide〔ppm〕?
FIG.2 Influence of Sulphur dioxide
Hydrogen sulphide indicating value 〔ppm〕
500 1000 1500 2000
Substance Interference ％ Coexistence
Sulphur dioxide FIG.1 aTfhfeec atecdc.uracy of readings is not 0.3 Higher readings are given.
Ammonia Blue stain is produced. The accuracy of readings is not
affected.
Methyl mercaptan Pale yellow stain is produced. 〃
（NOTE）
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration＝2×Reading value