Gastec 5DH 二氧化硫被动发现管SO2(10~600 ppm)

Indicator: 50 to 600 ppm
Measuring Range: 10 to 600 ppm
Sampling Hours: 1 to 5 hours
Colour Change: Bluish purple → White
Reaction Principle: SO2 + I2 +H2O → 2HI + H2SO4
Coefficient of Variation: 10% (for 50 to 600 ppm・hr)
Nr. of tests: 10

Detail

Catalog

Performance
Measuring Range 10 to 600 ppm
Sampling Hours 1 to 5 hours
Detecting Limit 1 ppm (5 hours)
Colour Change Bluish purple → White
Reaction Principle SO2 + I2 +H2O → 2HI + H2SO4
Coefficient of Variation 10% (for 50 to 600 ppm・hr)
Shelf Life 3 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Nitrogen dioxide   No
Hydrogen sulphide   + White
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
- 0.25 ppm (2014) -
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