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產品名稱: 丁酮CH3COC2H5檢測管152D
產品型號:
152D
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簡單介紹
丁酮CH3COC2H5檢測管152D，GASTEC丁酮CH3COC2H5檢測管152D檢測范圍2-600ppm，檢測管檢測時間在1-10小時左右。丁酮CH3COC2H5檢測管152D采用自然擴散的方式。丁酮CH3COC2H5檢測管152D其特點：簡潔，輕巧，方便多用、直接讀數、不需取樣設備。
丁酮CH3COC2H5檢測管152D的詳細介紹
丁酮CH3COC2H5檢測管152D
丁酮CH3COC2H5檢測管152D，GASTEC丁酮CH3COC2H5檢測管152D檢測范圍2-600ppm，檢測管檢測時間在1-10小時左右。丁酮CH3COC2H5檢測管152D采用自然擴散的方式。丁酮CH3COC2H5檢測管152D其特點：簡潔，輕巧，方便多用、直接讀數、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
Performance
| Measuring Range | 2 to 600 ppm |
| Sampling Hours | 1 to 10 hours |
| Detecting Limit | 2 ppm (10 hours) |
| Colour Change | Yellow → Reddish Brown |
| Reaction Principle | CH3COCH3 + (NH2OH)3H3PO4 → H3PO4
H3PO4 + Base → Phosphate |
| Coefficient of Variation | 10% (for 20 to 600 ppm-hr) |
| Shelf Life | 2 Years |
| Corrections for temperature & humidity | Temperature correction is necessary |
| 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 |
| Aldehydes | | + | Reddish brown |
| Ketones | | + | Reddish brown |
| Acid gases | | + | Reddish brown
(Unclear demarcation) |
Other substance measurable with this detector tube
| Substance | Correction Factor | Measuring Range |
| Acetone | 0.7 | 1.4 to 420 ppm |
| Methyl isobutyl ketone | 2.0 | 4 to 1200 ppm |
| Acetaldehyde | 0.6 | 1.2 to 360 ppm |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 200 ppm | 300 ppm | 1.7 to 11.4% |