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二氧化碳检测管2D Carbon dioxide CO2
二氧化碳检测管2D Carbon dioxide CO2，Measuring Range 0.02 to 12% Sampling Hours 0.5 to 10 hours Detecting Limit 0.02 ppm (12 hours) Color Change Pale Red → Yellow Reaction Principle二氧化碳检测管价格
二氧化碳检测管2D Carbon dioxide CO2
Carbon dioxide No.2D
| Performance |
|
Measuring Range |
0.02 to 12% |
|
Sampling Hours |
0.5 to 10hours |
|
Detecting Limit |
0.02 ppm (12hours) |
|
Color Change |
Pale Red →Yellow |
|
Reaction Principle |
CO2 + 2KOH → K2CO3 + H2O |
| Coefficient ofVariation |
10%(for 0.2 to 8 %-hr) |
| ShelfLife | 2 Year |
| Correctionsfor temperature & humidity |
Temperature correction isnecessary |
| Store the tubes atcool and dark place. | |
| Possible coexisting substances and theirinterferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself to |
|
Ammonia |
500 ppm |
No |
No discoloration upto 500ppm |
|
Hydrogenchloride |
300 ppm |
No |
No discoloration upto 300ppm |
|
Chlorine |
10 ppm |
No |
No discoloration upto 5ppm |
|
Hydrogencyanide |
50 ppm |
No |
No discoloration upto 30ppm |
|
Sulfurdioxide |
15 ppm |
No |
No discoloration upto 15ppm |
|
Nitrogendioxide |
10 ppm |
No |
No discoloration upto 10 ppm |
|
Hydrogensulfide |
50 ppm |
No |
No discoloration upto 30 ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 5000 ppm | 30000ppm | - |