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氮氧化物NO+NO2氣體檢測管175SA NITROGEN OXIDES 20-250ppm,多種不同用途的氮氧化物濃度檢測儀,氮氧化物的檢測方法檢測管法,經(jīng)濟(jì)實(shí)惠。包括多種化合物,如一氧化二氮(N2O)、一氧化氮 (N0)、二氧化氮(NO2)、三氧化二氮 (N203)、四氧化二氮(N204)和五氧化二氮(N205)等。就來看,空氣中的氮氧化物主要來源于天然源,但城市大氣中的氮氧化物大多來自于燃料燃燒,即人為源,如汽車等流動源,工業(yè)窯爐等固定源。
更新時間:2024-12-19
在線留言氮氧化物NO+NO2氣體檢測管175SA NITROGEN OXIDES 20-250ppm
Tube 75SA
1. PERFORMANCE
1) Measuring range :20-250 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :2 ppm
4) Shelf life :1 year
5) Operating temperature :5~45℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
NO ; By reacting with an Oxidizer, NO2 is produced.
NO+CrO3+H2SO4→NO2
NO2+(C6H5)2NH→(C6H5)2NNO
NO2 ; By reacting with Diphenylamine, N-Nitroso-diphylamine is produced.
NO2+(C6H5)2NH→(C6H5)2NNO
4. CALIBRATION OF THE TUBE
NO ; STANDARD GAS CYLINDER METHOD
NO2 ; PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
20
40
60
80
100
150
200
250
ppm
100ml
GAS To pump
PRETREAT REAGENT
(Reddish brown)
175SA NITROGEN OXIDES
Substance ppm Interference ppm Coexistence
Over 600 Dark blue stain is produced.
Hydrogen chloride Over 1,000 Brownish red/Yellow/Dark blue Lower readings are given.
stain is produced.
Sulphur dioxide 100 〃
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