产品详情
简单介绍:
丁酮检测管152D,GASTEC丁酮检测管152D检测范围2-600ppm,刻度范围20-600ppm.检测管检测时间在1-10小时左右。丁酮检测管152D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。
详情介绍:
丁酮检测管152D,GASTEC丁酮检测管152D检测范围2-600ppm,刻度范围20-600ppm.检测管检测时间在1-10小时左右。丁酮检测管152D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
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
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
Methyl ethyl ketone |
NO.152D |
CH3COC2H5 |
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% |