光氣COCl2氣體檢測(cè)管146S PHOSGENE 0.1-20ppm

Tube 46S
1. PERFORMANCE
1） Measuring range ：0.5-20 ppm 0.1-0.5 ppm
Number of pump strokes 1（100ml） 5（500ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.05 ppm（500ml）
4） Shelf life ：1 year （Necessary to store in a refrigerated place ; 0～10℃）
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：5％
3. CHEMICAL REACTION
By reacting with Nitro-benzyl pyridine, urea derivative is produced.
This urea derivative reacts with Benzyl aniline and dyestuff is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
20.0
15.0
10.0
5.0
3.0
1.0
0.5
ppm
100ml
GAS To pump
DEHUMIDIFIER
（White）
146S PHOSGENE
0
10
5
Nitrogen dioxide〔ppm〕?
FIG.1 Influence of Nitrogen dioxide
Phosgene indicating value 〔ppm〕
10 20 30
Substance Interference ppm Coexistence
Nitrogen dioxide Yellow stain is produced. 100 Yellow stain is produced and higher
FIG.1 readings are given.
Chlorine 5 Discolouration is faded from the gas
inlet edge.
Hydrogen chloride 10 〃
Sulphur dioxide 0.2％ 〃
（NOTE）
When the concentration is below 0.5 ppm, 5 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration＝1/5×Temperature corrected value
TEMPERATURE CORRECTION TABLE
Scale True Concentration （ppm）
Readings 0℃ 10℃ 20℃ 30℃ 40℃
（ppm） （32°F） （50°F） （68°F） （86°F） （104°F）
20 13.5 17.0 20.0 21.8 23.0
15 10.5 12.8 15.0 16.5 17.5
10 7.0 8.6 10.0 11.0 11.8
5 3.5 4.3 5.0 5.5 5.8
3 3.0 3.0 3.0 3.0 3.0