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MEASUREMENT | |
Operating Principle | 3-electrode electrochemical |
Measurement Range | 0-20 ppm SO2 |
Maximum Overload | 150 ppm SO2 |
Filter | To remove H2 S |
Filter Capacity | 1000 ppm hrs @ 25 ppm H2 S |
Sensitivity | 0.5 ± 0.1 μA/ppm |
Response Time (T90） | < 25 Seconds at 20OC |
Baseline Offset (clean air) | -0.2 to +0.5 ppm equivalent |
Zero Shift (+20°C to +40°C) | < 0.1 ppm equivalent |
Repeatability | < ±2% of signal |
Linearity | Linear over measurement |
range 0-20 ppm and within ±5% | |
ELECTRICAL | |
Recommended Load Resistor | 10 ? |
Bias Voltage | Not required |
Resolution | Dependent on electronics. (0.1 ppm when using recommended electronics) |
MECHANICAL | |
Housing Material | Noryl 110 |
Weight | Approx. 4.5 g |
Orientation | Any |
ENVIRONMENTAL | |
Typical Applications | Portable life safety |
Operating Temperature Range: | |
Continuous | -20°C to +50°C |
Intermittent | -40°C to +55°C |
Lifetime will be reduced if regularly exposed to extremes of temperature | |
Recommended Storage Temp | 0 - 20°C
|
Operating Pressure Range
| 1 atm ± 20% |
Operating Humidity Range
| 15% to 90%RH non-condensing. Extended exposure to extreme humidity conditions will degrade sensor performance. |
INTRINSIC SAFETY DATA | |
Maximum current at 150 ppm | 0.1 mA |
Maximum o/c Voltage | < 0.75 V |
Maximum s/c Current | < 1.0 A |
LIFETIME | |
Long Term Output Drift | < 5% per annum |
Expected Operating Life | 2 years in clean air |
Storage Life | 6 months in original packaging |
Standard Warranty | 12 months from date of despatch |
