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  • 产品名称:氮氧化物检测管11L Nitrogen oxides

  • 产品型号:11L
  • 产品厂商:日本GASTEC
  • 产品文档:
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简单介绍:
11L 氮氧化物NO+NO2检测管 Nitrogen oxides11L 氮氧化物NO+NO2检测管 Nitrogen oxides,Measuring Range 0.04 to 0.08 ppm 0.08 to 0.2 ppm 0.2 to 5.0 ppm 5.0 to 16.5 ppm,
详情介绍:

 

氮氧化物检测管11L  Nitrogen oxides
Nitrogen oxides       No.11L

NO+NO2

氮氧化物检测管11L  Nitrogen oxides

Performance
 

MeasuringRange

0.04 to 0.08ppm

0.08 to 0.2ppm

0.2 to 5.0 ppm

5.0 to 16.5ppm

Number of Pump Strokes

8

4

2

1

CorrectionFactor

0.2

0.4

1

3.3

SamplingTime

2 minutes per pumpstroke

DetectingLimit

0.01ppm(n=8)

ColorChange

White → Yellowishorange

ReactionPrinciple

NO + Cr6++ H2SO4→NO2
NO2 + o-Tolidine 仺 Yellowish orangeproduct

Coefficient ofVariation10% (for0.2 to 1 ppm), 5% (for 1 to 5 ppm)
ShelfLife3Years
Correctionsfor
temperature & humidity
Unnecessary
Store the tubes at cool and darkplace.

Possible coexisting substances and theirinterferences(NOTE)


Substance

Concentration

Interference

Change color by itself

Chlorine,Bromine,
Chlorine dioxide

-

Plus error

Produce similarstain

Sulfurdioxide

25 ppm

Minus error

Nodiscoloration

Hydrogensulfide

25 ppm

Minus error

Nodiscoloration

Othersubstance measurable with this detector tube


 
Calibration gasgenerationNO2:Permeation tube method
NO:High pressure gas cylinder method


 


TLV-TWATLV-STELExplosive range
NO2:3ppm
NO:25ppm
NO2:5ppm-
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