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進(jìn)口二氧化硫SO2氣體檢測(cè)管103SE SULPHUR DIOXIDE 0.25-10ppm,【檢知管法】(detectortubemethod)指用試劑浸泡過(guò)的載體顆粒裝在玻璃管中,當(dāng)被測(cè)空氣以一定速度抽過(guò)此管時(shí),被測(cè)物質(zhì)與試劑發(fā)策顏色反應(yīng),然后根據(jù)顏色的深淺和色柱的長(zhǎng)短,與標(biāo)準(zhǔn)色板或濃度標(biāo)尺進(jìn)行比較,從而作出定性和半定量的分析方法。所用載體應(yīng)具畝下列性能:(1)化學(xué)惰性,即不與被測(cè)物質(zhì)和試劑起反應(yīng);(2)質(zhì)地牢固,并能粉碎成一定大小的顆粒;(3)白色多孔或表面粗糙的固體物質(zhì)。常用的載體有硅膠
更新時(shí)間:2024-12-26
在線留言進(jìn)口二氧化硫SO2氣體檢測(cè)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
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