Gastec 80 气体检测管(1~80 ppm)

Indicator: 2 to 40 ppm
Measuring Range: 
+ 1 to 2 ppm, Number of Pump Strokes 4
+ 2 to 40 ppm, Number of Pump Strokes 2
+ 40 to 80 ppm, Number of Pump Strokes 1
Sampling Time: 30 seconds per pump stroke
Colour Change: Pale bluish purple → Yellow
Coefficient of Variation: 10% (for 2 to 40 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
1 to 2 ppm 2 to 40 ppm 40 to 80 ppm
Number of Pump Strokes
4 2 1
Correction Factor
1/2 1 2
Sampling Time 30 seconds per pump stroke
Detecting Limit 0.5 ppm (n=4)
Colour Change Pale bluish purple → Yellow
Reaction Principle Acid gases react with detecting layer to produce yellow stain.
Coefficient of Variation 10% (for 2 to 40 ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Unnecessary
Store the tubes in dark and cool place
Other substance measurable with this detector tube
Substance Corrction No. of pump strokes Measuring Range
Hydrogen chloride 4 2 8 to 160ppm
Chlorine 0.35 2 0.7 to 14ppm
Nitric acid 2.5 2 5 to 100ppm
sulphur dioxide 0.75 2 1.5 to 30ppm
Nitrogen dioxide 0.1 2 0.2 to 4ppm
Iodine 0.06 2 0.12 to 2.4ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
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