四氯化碳CCl4氣體檢測(cè)管147S CARBON TETRACHLORIDE 5-60ppm 返回列表頁(yè)

四氯化碳CCl4氣體檢測(cè)管147S CARBON TETRACHLORIDE 5-60ppm

1. PERFORMANCE
1） Measuring range ：1-60 ppm 0.5-1 ppm
Number of pump strokes 1（100ml） 2（200ml）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：0.2 ppm（200mr）
4） Shelf life ：1 year
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 ：White→Red
2. RELATIVE STANDARD DEVIATION
RSD-low：15％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
Carbon tetrachloride is decomposed and Phosgene is produced. By reacting with this Phosgene,
4- （p-Nitrobenzyl）-phridine and Benzylaniline, dyestuff is produced.
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
DETECTOR TUBE
（white） （Olive）
PRETREAT TUBE
1
5
10
20
30
40
50
60
100ml
ppm
147S CARBON TETRACHLORIDE
Substance Interference ppm Coexistence
Phosgene Similar stain is produced. 2 Higher reading are given.
Halogenes FIG.1 〃
Halogenated hydrocarbonFsIG.2 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration （ppm）
Readings 0℃ 10℃ 20℃ 30℃ 40℃
（ppm） （32°F） （50°F） （68°F） （86°F） （104°F）
60 40 50 60 78 －
50 34 42 50 62 76
40 27 34 40 46 57
30 21 25 30 33 38
20 15 17 20 21 22
10 9 10 10 10 10
5 5 5 5 5 5
1 1 1 1 1 1
（NOTE）
When the concentration is below 1 ppm, 2 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration＝1/2×Temperature corrected value
6.CAUTION
When high concentration gas（over the full scale）is sampled, the indicator will be discoloured from pale yellow
to dark blue. If extremely high concentration gas is sampled, the detecting reagent may be faded and it is not
possible to distinguish with original colour.
0
40
20
Chlorine〔ppm〕?
FIG.1 Influence of Chlorine
Carbon tetrachloride
indicating value 〔ppm〕
10 20 0
40
20
Trichloroethylene〔ppm〕?
FIG.2 Influence of Trichloroethylene