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二氧化碳?xì)怏w檢知管126SA Carbon dioxide 0.1-5.2%,有關(guān)氣體濃度表示方法及換算,重量、體積比表示方法:即每立方米氣樣中所含被測(cè)氣體物質(zhì)的毫克數(shù)(毫克/立方米 mg/m3 )。體積比表示法:即一定體積氣樣中所含被測(cè)氣體物質(zhì)所占的體積百分?jǐn)?shù)(%)。在微量分析中通常以ppm表示, 1% = 10000ppm
更新時(shí)間:2024-11-20
在線(xiàn)留言二氧化碳?xì)怏w檢知管126SA Carbon dioxide 0.1-5.2%
1. PERFORMANCE
1) Measuring range :0.2-5.2% 0.1-2.6%
Number of pump strokes 1/2(50ml) 1(100ml)
2) Sampling time :5 minutes/1 pump stroke
3) Detectable limit :100 ppm(100mr)
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pale blue→Pale pink
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with alkali, PH indicator is discoloured.
CO2+2NaOH→NaCO3+H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.5
0.4
0.3
0.2
0.1
%
100ml
GAS To pump
Tube No.
126SA CARBON DIOXIDE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (%)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(%) (32°F) (50°F) (68°F) (86°F) (104°F)
3.5 5.5 4.6 3.5 3.2 2.8
3.0 4.7 3.9 3.0 2.7 2.4
2.5 3.9 3.2 2.5 2.2 2.0
2.0 3.1 2.6 2.0 1.8 1.6
1.5 2.4 1.9 1.5 1.4 1.2
1.0 1.6 1.3 1.0 0.9 0.8
0.8 1.3 1.0 0.8 0.7 0.7
0.5 0.8 0.7 0.5 0.5 0.4
0.3 0.5 0.4 0.3 0.3 0.3
0.1 0.2 0.1 0.1 0.1 0.1
Substance Interference ppm Coexistence
Hydrogen sulphide Similar stain is produced. 100 Higher readings are given.
Chloride 〃100 〃
Hydrogen cyanide 〃200 〃
Sulphur dioxide 〃500 〃
(NOTE)
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration=2×Temperature corrected value.
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