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  • 产品名称:氮氧化物检测管10 Nitrogen oxides

  • 产品型号:10
  • 产品厂商:日本GASTEC
  • 产品文档:
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简单介绍:
氮氧化物检测管10 Nitrogen oxides,Name of Gas Nitrogen Dioxide (NO2) Nitric oxide (NO) Measuring Range 2.5 to 200 ppm 2.5 to 5 ppm 5 to 200 ppm,氨气、苯、一氧化碳、硫化氢、二氧化硫、氟化氢、二氧化碳、氯气、氯化氢、氮氧化物、碳氢化合物总量、丙酮、二甲苯、丁酮、甲苯、磷化
详情介绍:
氮氧化物检测管10 Nitrogen oxides

Nitrogen oxides       No.10

NO2, NO (Separete quantification)

氮氧化物检测管10 Nitrogen oxides

Performance
 

Name of Gas

Nitrogen Dioxide (NO2)

Nitric oxide (NO)

Measuring Range

2.5 to 200 ppm

2.5 to 5 ppm

5 to 200 ppm

Pump Strokes

1

2

1

Correction Factor

1

1/2

1

Sampling Time

1 minute per pump stroke

Detecting Limit

0.5 ppm (n=1)

1 ppm (n=2)

Color Change

White → Yellowish orange

Reaction Formula

NO2 tube:
NO2 + o-Tolidine 仺 Yellowish orange product
NO tube:
NO + Cr6+ + H2SO4 →NO2
NO2 + o-Tolidine 仺 Yellowish orange product

Coefficient of Variation

NO2 tube: 10% (for 2.5 to 20 ppm), 5% (for 20 to 200 ppm)
NO tube:10% (for 5 to 20 ppm), 5% (for 20 to 200 ppm)

Shelf Life3 Years
Corrections for
temperature & humidity

NO2 tube:Unnecessary
NO tube:Temperature correction is necessary

Store the tubes at cool and dark place.

 

Possible coexisting substances and their interferences(NOTE)

For the NO2 tube

Substance

Concentration

Interference

Change color by itself

Nitrogen monoxide

-

No effect

Produce red belt at demarcation

Hydrogen chloride

-

Unclear demarcation

No discoloration

Ozone, Halogens,
Chlorine dioxide

1/5

20% Plus error

Produce yellowish orange stain

Sulfur dioxide

50 ppm

Unclear demarcation

No discoloration



For the NO tube

Substance

Concentration

Interference

Change color by itself

Hydrogen chloride

-

No effect

No discoloration

Ozone, Halogens, Chlorine dioxide

-

No effect

No discoloration

Sulfur dioxide

-

No effect

No discoloration

Nitrogen dioxide

-

No effect

No discoloration

Other substance measurable with this detector tube

 

Calibration gas generationPermeation tube method


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