Gastec 11L 氮氧化物气体检测仪 NO + NO2(0.04~16.5pmm)

Indicator: 0.2 ~ 5.0 ppm
Measuring Range: 
+ 0.04~0.08ppm, Number of Pump Strokes 8
+ 0.08ppm~0.2ppm, Number of Pump Strokes 4
+ 0.2~8.0ppm, Number of Pump Strokes 2
+ 5.0~16.5ppm, Number of Pump Strokes 1
Sampling Time: 2 minute per pump stroke
Colour Change: White → Yellowish orange
Reaction Principle: NO + Cr6+ + H2SO4 →NO2, NO2 + o-Tolidine → Yellowish orange product
Coefficient of Variation: 10% (for 0.2 to 1 ppm), 5% (for 1 to 5 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
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
Number of Pump Strokes
8 4 2 1
Correction Factor
0.2 0.4 1 3.3
Sampling Time 2 minutes per pump stroke
Detecting Limit 0.01 ppm (n=8)
Colour Change White → Yellowish orange
Reaction Principle NO + Cr6+ + H2SO4 →NO2
NO2 + o-Tolidine → Yellowish orange product
Coefficient of Variation 10% (for 0.2 to 1 ppm), 5% (for 1 to 5 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Chlorine, Bromine,
Chlorine dioxide
  + Yellowish orange
sulphur dioxide 25 ppm No
Hydrogen sulphide 25 ppm No
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
NO2: 0.2 ppm(2014)
NO: 25 ppm(2014)
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