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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>175SA氮氧化物NO+NO2气体检测管175SA NITROGEN OXIDES 20-250ppm

氮氧化物NO+NO2气体检测管175SA NITROGEN OXIDES 20-250ppm

简要描述:

氮氧化物NO+NO2气体检测管175SA NITROGEN OXIDES 20-250ppm,多种不同用途的氮氧化物浓度检测仪,氮氧化物的检测方法检测管法,经济实惠。包括多种化合物,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。就全球来看,空气中的氮氧化物主要来源于天然源,但城市大气中的氮氧化物大多来自于燃料燃烧,即人为源,如汽车等流动源,工业窑炉等固定源。

更新时间:2018-03-17

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氮氧化物NO+NO2气体检测管175SA NITROGEN OXIDES 20-250ppm

氮氧化物NO+NO2气体检测管175SA NITROGEN OXIDES 20-250ppm

Tube No.175SA

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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