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甲醛檢測管NO. 91P

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更新時間:2018-05-14 09:00:00瀏覽次數(shù):1077次

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甲醛檢測管NO. 91P,GASTEC氣體檢測管,甲醛HCHO檢測管NO. 91P,GASTEC電泵用氣體檢測管檢測范圍0.02-1.44ppm。

詳細(xì)介紹

甲醛檢測管NO. 91P

GASTEC為了滿足用戶在氣體檢測方面的需要,而開發(fā)出了電子自動采氣泵。用傳統(tǒng)的電子吸氣泵幾乎不能進(jìn)行有效的采氣,因?yàn)闄z測管里的填充試劑密度很高。而GASTEC開發(fā)的GSP電泵系列能提供強(qiáng)勁吸力,能滿足特定的檢測管的取樣要求。電泵和檢測管組成的新的檢測系統(tǒng)能適用于作業(yè)環(huán)境的檢測。甲醛檢測管NO. 91P,GASTEC甲醛檢測管NO. 91P氣體檢測管,甲醛HCHO檢測管NO. 91P,GASTEC甲醛檢測管NO. 91P電泵用氣體檢測管檢測范圍0.02-1.44ppm。

Formaldehyde

NO.91P


 

HCHO  
Specifications
Calibration Range 0.02-0.4 ppm
Measuring range 0.02-1.44 ppm
Sampling (flow) Rate 200mL/min
Sampling Volume 6000mL, 2000mL
Sampling Time 30min, 10min.
Detecting Limit 0.01 ppm
Colour Change Yellow → pink
Corrections for temperature/humidity Temperature
Shelf life 1 year (in the refrigerator)
Accuracy CV=5-10%
(CV: Coefficient of variation = σ: standard deviation / mean value x 100)
Possibly coexisting substances and their interferences
Substance(s) Interference Colour change by itself
Ammonia 2 ppm (or less) No No
Nitrogen dioxide 1 ppm (or less) No No
Acetaldehyde   "+" error
(higher reading)
produces pinkish discolouration
Acetone 0.3 ppm (or less) No Produces pinkish stain around tube opening (inlet)
Ethanol   No No
Ethyl acetate   No No
p-dichlorobenzene   No No
Toluene   No No

Scrubber 1 (black): removes acetone

Scrubber 2 (purple):
Ammonia and nitrogen dioxide are removed. The presence of ammonia causes the purple scrubber 2 to turn yellow.

The presence of nitrogen dioxide causes scrubber 2 to turn a darker shade of purple
Calibration gas generation Diffusion tube method (analysis: by absorptiometry, acetylacetone method)
Miscellaneous
Electric sampling pump
This detector tube is suited for measuring formaldehyde in indoor environments. The GSP-200 / GSP-300FT series automatic gas samplers (or comparable sampling devices/pumps) should always be used for optimal performance.
A deviation of +/-10% in the sampling flowrate (i.e. amount of air flowing through the tube at a given moment) or the sampling amount (total sampled amount of target substance) causes an average margin of error of approx. +/-10% (maximum +/-20%) in the indicated value.
Formaldehyde indoor concentration threshold: 0.08 ppm (mean value during 30 minutes)
TLV-TWA TLV-S Explosive range
-- -- C0.3ppm 7.0×73%

 


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