5SFF

MEASUREMENT
Operating Principle: 3-electrode electrochemical
Nominal Range: 0-2000 ppm SO2
Maximum Overload: 5000 ppm SO2
Filter: To remove effects of H2S and HCl
Filter Life: >200,000 ppm hours (1000 ppm H2S @ 500 ml/min)
Sensitivity: 0.10 ± 0.02 ?A/ppm
Response Time (T90): < 40 seconds
Baseline Offset (clean air):± 2 ppm equivalent
Maximum Zero Shift (+20°C to +40°C): 5 ppm equivalent
Resolution (When using recommended electronics): 1 ppm
Repeatability: 1% of signal
Linearity: Linear

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

MECHANICAL
Weight: 10 g nominal
Orientation: Any

ENVIRONMENTAL
Operating Temperature Range: -20°C to +50°C
Recommended Storage Temp: 0°C to 20°C
Pressure Coefficient: Approx. 0.08% signal / mbar
Operating Pressure Range: Atmospheric ± 10%
Operating Humidity Range: 15 - 90% RH non-condensing

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