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日本gastec 152D丁酮气体检测管2-600ppm

产品简介:日本gastec 152D丁酮气体检测管2-600ppm

产品型号:152D

更新时间:2024-03-12

厂商性质:代理商

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产品介绍
 日本gastec 152D丁酮气体检测管2-600ppm  产品介绍:

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。也可用来进行长时间的检测。
特点 
简洁,轻巧,方便多用 
直接读数 
不需取样设备 

图例 
A-切断处 
B-吸附剂 
C-检测剂 

 
检测管夹 No. 710
 日本gastec 152D丁酮气体检测管2-600ppm


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 3CH3COC2H5+ (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 (NOTE)
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(2014) 300 ppm(2014) 1.7 to 11.4%

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