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SO2 concentration: (0～500）ppb
- Resolution: 0.1 ppb
Sampling flowrate: 600 mL/min
- Resolution: 1mL/min
Zero point noise: ≤1.0 ppb
Minimum detection limit: ≤2.0 ppb
Linearity: ±2% F.S.
Zero drift: ±1 ppb
Span drift: ±1% F.S.
Span noise: ≤5.0 ppb
Indication error: ±3% F.S.
Response time: ≤120 s
Flow stability: ±10%
Voltage stability: ±1% F.S.
Effect of ambient temperature changes: ≤1 ppb/℃
Data storage: 250000 groups
Dimensions: (L395×W255×H450) mm
Host weight: About 16.5kg
Power supply: AC(220±22)V，(50±1)Hz
Consumption: ≤500W(With heating)
Working condition: (-20~50）℃
Principle
UV light radiates at shorter wavelengths than visible light and cannot be seen by the human eye. However, when UV light is absorbed by certain materials, it is reflected back as longer wavelength visible radiation, or visible light. This phenomenon is referred to as UV-induced visible fluorescence. So, using the fluorescence characteristics and intensity that occur when certain substance molecules are exposed to light, quantitative analysis can be conducted on the substance.
SO2 molecules absorb UV light at the wavelength of 200nm~220nm. The absorbed UV energy excites the outer electrons to the next state. The excited electrons then return to the original state and emit photons at the wavelength of 240nm~420nm. Within a certain concentration range, the SO2 concentration is directly proportional to the fluorescence intensity.
Features
Powerful function and ensure data stable
Equipped with precision light sources and optical sensors, ensure long service life and effective anti-interference.
UV-fluorescent detector resistant to moisture interference.
Uses a built-in inert PTFE sample inlet filter, which do not adsorb or react with the measured gas components.
Adaptive filtering algorithm, fast response, low detection limit, high sensitivity.
Built-in hydrocarbon remover effectively removes the impact of polycyclic aromatic hydrocarbons (PAHs) in the air on measurement data.
Measure environmental temperature, humidity, pressure, and provide real-time compensation for temperature and pressure, suitable for stable and accurate monitoring in different conditions.
Users friendly
Low maintenance workload and cost, filters are replaced every 14 days, without any other maintenance.
Datas can be switched to ppb, ppm, nmol/mol, μmol/mol, μg/m3, mg/m3
7-inch touch screen, easy to operation.
Zero point and span calibration can be performed manually.
Store over 250000 data, check and print the data in real time by Bluetooth printer and exported by USB.
Support GPS and 4G remote data upload.
Excellent protective performance
Lightweight, easy to carry and install, rainproof and dustproof.
A rugged IP65 weatherproof enclosure provides optimal performance, even in extreme conditions, purpose-built for the outdoors, unmanned monitoring.
