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碳酰硫化物(Carbonyl sulphide)羰基硫化物COS氣體檢測(cè)管239S CARBONYL SULPHIDE 5-60ppm,硫化羰檢測(cè)管,“臭氣濃度" 的定義是指將氣味(原臭)“用無(wú)臭的干凈空氣進(jìn)行稀釋時(shí),正好達(dá)到無(wú)臭時(shí)所需要的稀釋倍數(shù)"。臭氣濃度100是指如果將氣味(原臭)用無(wú)臭的干凈空氣進(jìn)行100倍的稀釋,那么氣味就會(huì)消失。另外,還有一種叫臭氣指數(shù)的標(biāo)準(zhǔn),更能對(duì)應(yīng)于人的嗅覺(jué)感覺(jué)量。它是臭氣濃度常用對(duì)數(shù)的10倍,在日本的《惡臭防止法》中就采用了臭氣指數(shù)。
更新時(shí)間:2024-11-20
在線留言羰基硫化物COS氣體檢測(cè)管239S CARBONYL SULPHIDE 5-60ppm
Tube No.239S
1. PERFORMANCE
1) Measuring range :5-60 ppm
Number of pump strokes 1(100ml)
2) Sampling time :2 minutes/1 pump stroke
3) Detectable limit :2 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary under 20℃(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:5% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTI0N
By discomposing with an Oxidizer, Sulphur dioxide is produced. Sulphur dioxide reacts with Alkali and PH
indicator is discoloured.
COS+CrO3+H2SO4→SO2
SO2+2NaOH→Na2SO3+H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY??
????
?? ??
GAS To pump
DETECTOR TUBE
(white) (Yellow)
PRETREAT TUBE
5
10
20
30
40
50
60
100ml
ppm
239S CARBONYL SULPHIDE
Substance Interference Coexistence
Sulphur dioxide Higher readings are given.
Hydrogen sulphide 〃
Carbon disulphide 〃
TEMPERATURE CORRECTION TABLE
Scale Corrected Concentration (ppm)
Readings 0℃ 10℃ 20-40℃
(ppm) (32°F) (50°F) (68-104°F)
60 85 70 60
50 75 60 50
40 60 45 40
30 45 35 30
20 30 25 20
10 15 12 10
5 7 6 5
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