氧氣O2氣體檢知管159SB OXYGEN 2-24% 返回列表頁(yè)

氧氣O2氣體檢知管159SB OXYGEN 2-24%

1. PERFORMANCE
1） Measuring range ：2-24％
Number of pump strokes 1/2（50ml）
2） Sampling time ：2 minutes/1/2 pump stroke
3） Shelf life ：2 years
4） Operating temperature ：0～40℃
5） Reading ：Direct reading from the scale calibrated by 1 /2 pump stroke
6） Colour change ：White→Brown
2. RELATIVE STANDARD DEVIATION
RSD-low：5％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
Oxygen reacts with alkaline pyrogallol.
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
2
6
9
12
15
18
21
24
%
50ml
GAS To pump
TEMPERA TURE
INDICATOR
Tube No.
159SA,SB OXYGEN
Substance Interference ppm Coexistence
Hydrogen sulphide 2％ Higher readings are given.
Nitrogen dioxide 2％ 〃
Sulphur dioxide Similar stain is produced. 2％ 〃
Carbon dioxide 〃5％ 〃
6.NOTE
1）Coexistence of more than 5％of Carbon dioxide（CO2）gives higher reading and the reading from the scale
should be corrected with the following correction table.
2）The 59SA and SB tubes are necessary to heat the part of the temperature indicator until the indicator
discolours from Red to Purple first. In case of 59SA , it is necessary to use direct flame such as a match
or lighter to heat it up a non-hazardous area.59SB consists of a thin aluminum belt rolled on the indicator
and chemical liquid in a small bottle. When the liquid is dropped on the aluminum fully, a chemical reaction
occurs with generating smoke and temperature comes high. There, the 59SB is possible to use in a
hazardous area.
CO2 CORRECTION TABLE
Scale True Concentration （％）
Readings CO2 CO2 CO2 CO2
（％） 5％ 10％ 15％ 20％
2 2.0 － － －
6 6.0 2.5 － －
9 9.0 6.4 － －
12 12.0 10.0 7.0 6.0
15 15.0 12.8 10.0 7.8
18 18.0 16.0 14.0 12.1
21 21.0 19.0 16.6 14.4
24 24.0 21.2 19.6 17.9