产品详情
日本GASTEC 酸性气体检测管81D
详细介绍
酸性气体检测管81D
酸性气体检测管81D，GASTEC酸性气体检测管91D检测范围0.5-100ppm，检测管检测时间在1-10小时左右。酸性气体检测管91D采用自然扩散的方式。其特点：简洁，轻巧，方便多用、直接读数、不需取样设备。
被动扩散式检测管是用来测定较长时间下气体浓度的时量平均值（TWA），采用自然扩散的方式。
这种检测管里面填充有吸附剂及反应剂，气体以一定的速率被均匀吸附，从而出现较为明显均匀的变色
检测工作场所人员的有害气体暴露量时，用右图的检测管夹（710）放置在人员衣领处即可。
检测有害气体在工作场所的分布时，把该检测管固定放置一段时间后就可检测出来。也可用来进行更长时间的检测
Acetic acid | NO.81D |
| CH3CO2H |
 |
Performance
| Measuring Range | 0.5 to 100 ppm |
| Sampling Hours | 1 to 10 hours |
| Detecting Limit | 0.2 ppm (10 hours) |
| Colour Change | Purple → Yellow |
| Reaction Principle | CH3CO2H + NaOH → CH3CO2Na |
| Coefficient of Variation | 5% (for 5 to 20 ppm-hr), 10% (for 20 to 100 ppm-hr) |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Temperature correction is necessary |
| Store the tubes at cool and dark place. | |
Possible coexisting substances and their interferences (NOTE)
| Substance | Interference | Change colour by itself to |
| Hydrogen chloride, Nitric Acid | + | Yellow |
| Chlorine, Nitrogen dioxide | + | Yellow |
| Hydrogen cyanide, Sulphur dioxide | + | Yellow |
Other substance measurable with this detector tube
| Substance | Correction Factor | Sampling Time | Measuring Range |
| Formic acid | Factor: 1.1 | 1 to 10 | 0.55 to 110 ppm |
| Acetic anhydride | Factor: 0.6 | 1 to 10 | 0.3 to 60 ppm |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-S | Explosive range |
| 10 ppm | 15 ppm | 4 to 19.9% |
日本GASTEC 酸性气体检测管81D
*您想获取产品的资料：
个人信息：
