***CH3COC2H5檢測(cè)管152D
***CH3COC2H5檢測(cè)管152D,GASTEC***CH3COC2H5檢測(cè)管152D檢測(cè)范圍2-600ppm,檢測(cè)管檢測(cè)時(shí)間在1-10小時(shí)左右。***CH3COC2H5檢測(cè)管152D采用自然擴(kuò)散的方式。***CH3COC2H5檢測(cè)管152D其特點(diǎn):簡(jiǎn)潔,輕巧,方便多用、直接讀數(shù)、不需取樣設(shè)備。
被動(dòng)擴(kuò)散式檢測(cè)管是用來(lái)測(cè)定較長(zhǎng)時(shí)間下氣體濃度的時(shí)量平均值(TWA),采用自然擴(kuò)散的方式。
這種檢測(cè)管里面填充有吸附劑及反應(yīng)劑,氣體以一定的速率被均勻吸附,從而出現(xiàn)較為明顯均勻的變色
檢測(cè)工作場(chǎng)所人員的***氣體暴露量時(shí),用右圖的檢測(cè)管夾(710)放置在人員衣領(lǐng)處即可。
檢測(cè)***氣體在工作場(chǎng)所的分布時(shí),把該檢測(cè)管固定放置一段時(shí)間后就可檢測(cè)出來(lái)。也可用來(lái)進(jìn)行更長(zhǎng)時(shí)間的檢測(cè)
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 |
Correcti*** 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% |
GASTEC|GV-110S|GV-100S|手動(dòng)氣體***AP-20|北川式氣體檢測(cè)管|光明理化氣體檢測(cè)管|日本理化手動(dòng)氣體采樣器|北川式氣體***GASTEC日本氣體快速檢知管|便攜式氣味傳感器|氣味檢測(cè)儀迷你型XP-329m|氣味傳感器XP-329ⅢR|恒流型自動(dòng)氣體采樣器GSP-400FT|GASTEC氣體采樣器