3SFF

MEASUREMENT 
Operating Principle: 3-electrode electrochemical
Nominal Range: 0-2000 ppm SO2
Maximum Overload: 5000 ppm SO2
Filter: To remove H2S & HCl
Sensitivity: 0.10 ± 0.02 μA/ppm
Response Time (T90): <35 Seconds
Baseline Offset (clean air): ±2 ppm equivalent
Zero Shift (+20°C to +40°C): <5 ppm equivalent
Resolution: 1 ppm (electronics dependant)
Repeatability: 1% of signal
Output Linearity: Linear 

ELECTRICAL
Recommended Load Resistor: 10 Ω
Bias Voltage: Not Required

MECHANICAL
Weight: 22 g
Housing Material: Glass filled polypropylene
Orientation: Any

ENVIRONMENTAL
Operating Temperature Range: -20°C to +50°C
Recommended Storage Temp: 0°C to 20°C
Operating Pressure Range: Atmospheric ± 10%
Pressure Coefficient: 0.004 % signal/mBar
Operating Humidity Range: 15 - 90% RH non-condensing

LIFETIME
Long Term Sensitivity Drift: <2% signal loss / month
Expected Operating Life: Two years in air
Storage Life: 6 months in CTL container