甲硫醇CH3SH氣體檢知管164SA METHYL MERCAPTAN 5-140ppm 返回列表頁(yè)

甲硫醇CH3SH氣體檢知管164SA METHYL MERCAPTAN 5-140ppm

Tube No.
1. PERFORMANCE
1） Measuring range ：5-140 ppm
Number of pump strokes 1（100mr）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：1 ppm
4） Shelf life ：2 years
5） Operating temperature ：0～40℃
6） Temperature compensation ：Necessary（0～20℃）（See "TEMPERATURE CORRECTION TABLE"）
7） Reading ：Direct reading from the scale calibrated by 1 pump stroke
8） Colour change ：White→Reddish yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：5％
3. CHEMICAL REACTION
Methyl mercaptan reacts with Palladium sulphate.
CH3SH＋PdSO4→（CH3S）2Pd＋H2SO4
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
5
10
20
40
60
80
100
120
140
ppm
100ml
GAS To pump
H2SREMOVER
（White） H2S remover is effective up to 40 ppm H2S.
164SA METHYL MERCAPTAN
Substance ppm Interference ppm Coexistence
Carbon monoxide 150 Dark grey stain is produced.
Ethylene 200 〃
Hydrogen sulphide 40 Dark brown stain is produced.
Acetylene 20 〃
Ethyl mercaptan 1 Yellow stain is produced.
Methyl sulphide 1 Lower readings are given.
Chlorine 0.2 〃
（NOTE）
Max. 40 ppm Hydrogen sulphide is eliminated by pretreat reagent.
TEMPERATURE CORRECTION TABLE
Scale True Concentration （ppm）
Readings 0℃ 10℃ 20-40℃
（ppm） （32°F） （50°F） （68-104°F）
140 164 149 140
120 140 128 120
100 118 107 100
80 94 85 80
60 70 63 60
40 45 41 40
20 21 21 20
10 10 10 10