二氧化碳 NO.2A快速检测管是一种现场快速、直读测定气体浓度的检测手段，由一支内装显色指示剂、外壁印有浓度刻度的玻璃管组成，当被测气体通过管内指示剂时发生显色化学反应，测试人便可通过变色界线直接读出气体的浓度。具有数百种气体和不同的浓度范围，欢迎来电咨询。
Carbon dioxide No.2A
CO2
| Performance |
|
Measuring Range |
250 to 3000 ppm |
|
|
|
Sampling Rate |
100mL/min(500mL) |
|
|
|
Correction Factor |
1 |
|
|
|
Sampling Time |
5 minutes |
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|
Detecting Limit |
|
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|
Color Change |
Orange Yellow → Yellow |
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Reaction Principle |
CO2 + 2KOH → K2CO3 + H2O |
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| Coefficient of Variation | 10% (for 250 to 1000 ppm) , 5% (for 1000 to 3000 ppm) | ||
| Shelf Life | 2 Years | ||
| Corrections for temperature | Unnecessary for 0 to 40 | ||
|
Correctionsfor humidity Unnecessary for R.H.0 to 90% Store the tubes at cool and dark place. |
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| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
- |
- |
- |
- |
|
- |
- |
- |
- |
|
- |
- |
- |
- |
|
- |
- |
- |
- |
|
- |
- |
- |
- |
| Other substance measurable with this detector tube |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 5000 ppm | 30000 ppm | - |