Gastec 18M 快速臭氧测量探测管O3(20~400ppm)

Indicator: 20 to 200 ppm
Measuring Range: 
+ 4 to 20 ppm, Number of Pump Strokes 2 to 5
+ 20 to 200 ppm, Number of Pump Strokes 1
+ 200 to 400 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Orange → Pale yellow
Reaction Principle: O3 + Indicator → Chemical reaction compound
Coefficient of Variation: 10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
4 to 20 ppm 20 to 200 ppm 200 to 400 ppm
Number of Pump Strokes
2 to 5 1 1/2
Correction Factor
1/2 to 1/5 1 2
Sampling Time 45 seconds per pump stroke
Detecting Limit 1 ppm (n=5)
Colour Change Orange → Pale yellow
Reaction Principle O3 + Indicator → Chemical reaction compound
Coefficient of Variation 10% (for 20 to 60 ppm), 5% (for 60 to 200 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
Hydrogen chloride   No Red
Hydrogen fluoride   No Red
Boron trifluoride   No Red
Phosphine   No Red
Arsine   No Red
Chlorine   + Pale yellow
Nitrogen dioxide   + Pale yellow
Calibration gas generation Ozone generater
TLV-TWA TLV-STEL Explosive range
*1 - -

 

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