目錄:申貝科學儀器（蘇州）有限公司>>氣體檢測管>> 1HH/1H/1M一氧化碳檢測管
簡單介紹
1DL的詳細介紹
1DL
1DL，GASTEC1DL檢測范圍0.4 to 400 ppm,，檢測管檢測時間在1-10小時左右,。
1DL采用自然擴散的方式。其特點：簡潔,，輕巧,，方便多用、直接讀數(shù),、不需取樣設備。
被動擴散式檢測管是用來測定較長時間下氣體濃度的時量平均值（TWA）,，采用自然擴散的方式,。
這種檢測管里面填充有吸附劑及反應劑，氣體以一定的速率被均勻吸附,，從而出現(xiàn)較為明顯均勻的變色
檢測工作場所人員的有害氣體暴露量時,，用右圖的檢測管夾（710）放置在人員衣領處即可。
檢測有害氣體在工作場所的分布時,，把該檢測管固定放置一段時間后就可檢測出來,。也可用來進行更長時間的檢測
Carbon monoxide | DL |
| CO |
 |
Performance
| Measuring Range | 0.4 to 400 ppm | |
| Sampling Hours | 0.5 to 24 hours | |
| Detecting Limit | 0.2 ppm (24 hours) | |
| Colour Change | Pale Yellow → Brown | |
| Reaction Principle | CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3 | |
| Coefficient of Variation | 10% (for 10 to 200 ppm-hr) | |
| Shelf Life | 2 Years | |
| Corrections for temperature & humidity | Unnecessary | |
| Store the tubes in the refrigerator to keep at 10oC (50oF) or below. | ||
Possible coexisting substances and their interferences
| Substance | Concentration | Interference | Change colour by itself to |
| Nitrogen 倣onoxide | 亝 1/10 | No | No |
| Sulphur dioxide | 亝 1/1 | No | No |
| Nitrogen dioxide | 亝 1/20 | No | Brown |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-S | Explosive range |
| 25 ppm | - | 12.5 to 74% 訂購 |
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