進口二氧化硫SO2氣體檢測管103SE SULPHUR DIOXIDE 0.25-10ppm 返回列表頁

進口二氧化硫SO2氣體檢測管103SE SULPHUR DIOXIDE 0.25-10ppm

Tube 03SE
10 30 50 60 70 80 90
coefficient 0.9 0.95 1 1.1 of correction 1.2 1.3 1.4
1. PERFORMANCE
1） Measuring range ：0.5-10 ppm 0.25-5 ppm
Number of pump strokes 1（100ml） 2（200ml）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：0.1 ppm（200ml）
4） Shelf life ：1 year （Necessary to store in a refrigerated place ; 0～10℃）
5） Operating temperature ：0～40℃
6） Humidity compensation ：Necessary（See "R.H. CORRECTION COEFFICIENT TABLE"）
7） Reading ：Direct reading from the scale calibrated by 1 pump stroke
8） Colour change ：Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
By reacting with an Alkali, PH indicator is discoloured.
SO2＋2NaOH→Na2SO3＋H2O
4. CALIBRATION OF THE TUBE
PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
10
9
8
7
6
5
4
3
2
1
0.5
ppm
SO2
GAS To pump
103SE SULPHUR DIOXIDE
Substance Interference ppm Coexistence
The top of discoloured layer
Nitrogen dioxide Pale pink stain is produced. 3 becomes un clear and higher
readings are given.
Hydrogen chloride 〃Higher readings are given.
（NOTE）
1）This detector tube is affected by abmbient relative humidity,therefore,it is necessary to compensate the reading of
gas detector tube with the following formula and correction confficient table.
Actual concentration＝Reading Value（ppm）×Correction Coefficient
2）In case of 2 pump strokes, following formula is available for actual concentration.
Actual concentration＝1/2×Reading value corrected with above formula
R.H. CORRECTION COEFFICIENT TABLE