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Thermo 43i SO2 Thermo Scientific Get Quote



Now available to rent, Thermo 43i SO2 the industry's new gas monitoring solution, the new iSeries platform delivers on all counts - and then goes a step further. Using pulsed fluorescence technology, the Model 43i measures the amount of sulfur dioxide in the air up to 100ppm. The pulsing of the U.C. source lamp serves to increase the optical intensity whereby a greater U.C. energy throughput and lower detectable SO2 concentration area realized.

Key Features

  • Improved layout for easier accessibility to components
  • Flash memory for increased data storage and user downloadable software\r
  • Ethernet connectivity for efficient remote access\r
  • Enhanced user interface with one button programming and large display screen\r
  • Enhanced electronics design optimizes product commonality\r
  • \r

Technical Specifications

Zero Noise 1.0 ppb RMS (10 second averaging time), 0.5 ppb RMS (60 second averaging time),
Interferences (EPA Levels) < lower detectable limit except for the following: (EPA levels) NO < 3 ppb, M-Xylene < 2 ppb, H2O < 2% of reading
Sample Flow Rate 0.5 liters/min. (standard) 1 liter/min. (optional)
Linearity +/-1% full scale < 100ppm
Precision 1% of reading or 1 ppb (whichever is greater)
Response Time 80 seconds (10 second average time) 110 seconds (60 second average time)
Span Drift +/-1%
Zero Drift Less than 1 ppb
Lower Detectable Limit 2.0 ppb (10 second averaging time), 1.0 ppb (60 second averaging time)
Power Requirements 100 VAC, 115 VAC, 220-240 VAC +/-10% @ 165W
Custom Ranges 0-0.05 to 100 ppm
Extended Ranges 0-0.05, 1, 2, 5, 10, 20, 50 and 100 ppm
Preset Ranges 0-0.05, 0.1, 0.2, 0.5, 1, 2, 5, and 10 ppm
Operating Temperature 20&deg;C - 30&deg;C


  US Metric
Dimensions 16.75w x 8.62&#34;h x 23&#34; d&#34; -


  US Metric
Weight 48 lbs 21.8 kg