7STF

MEASUREMENT
Operating Principle: 3-electrode electrochemical
Measurement Range: 0-100 ppm SO2
Maximum overload: 500 ppm SO2
Filter: To remove H2S
Sensitivity: 0.37 ± 0.07 μA/ppm
Response Time (T90): <30 Seconds
Zero Shift (+20°C to +40°C): < 1 ppm SO2 equivalent
Resolution: 0.5 ppm (when used with recommended electronics)
Baseline Offset (clean air): -0.6 to +1.9 ppm H2S equivalent
Repeatability: 1% of signal
Linearity: Linear

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

MECHANICAL
Weight: 17 g
Housing Material:

• Cap: Polycarbonate
• Body: ABS

Orientation: Any

ENVIRONMENTAL
Operating Temperature Range: -20°C to +50°C
Recommended Storage Temp: 0°C to 20°C
Operating Pressure Range: Atmospheric ± 10%
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