供应gastec检测管152D甲基异丁基酮检测管152D

产品品牌：gastec

产品型号：检测管152D

 甲基异丁基酮(CH3)2CHCH2COCH3检测管152D
甲基异丁基酮(CH3)2CHCH2COCH3检测管152D，GASTEC甲基异丁基酮(CH3)2CHCH2COCH3检测管152D检测范围4-1200ppm，检测管检测时间在1-10小时左右。甲基异丁基酮(CH3)2CHCH2COCH3检测管152D采用自然扩散的方式。甲基异丁基酮(CH3)2CHCH2COCH3检测管152D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

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%

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