Sulfur Dioxide (SO2)

Gas Sensor Specifications


Gas: SO2
Sensor: 4-SO2-20

Performance Characteristics

Nominal Range: 0 to 20 ppm
Maximum Overload: 150 ppm
Long Term Output Drift: < 2% signal/month
Response Time (T90): ≤ 45 seconds
Sensitivity: 500 ± 150 nA/ppm
Accuracy: as good as ±0.1 ppm* (ideal conditions)

Operation Conditions

Temperature Range: -20 ºC to 50 ºC
Operating Humidity: 15 to 90%RH non-condensing
Pressure Range: 90 to 110 kPa
Storage Temperature: 0 ºC to 20 ºC
Expected Operating Life: 2 years in air
Average consumption: less than 1 mA


Accuracy values are only given for the optimum case. Read the Gases PRO Technical Guide for more details.