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| Brand | Campbell Scientific |
|---|---|
| Origin | USA |
| Model | IRGASON |
| Measurement Principle | Simultaneous open-path infrared absorption (CO₂/H₂O) and ultrasonic anemometry (3D wind velocity, sonic temperature) |
| Output Frequency | Up to 60 Hz |
| Bandwidth | 20 Hz |
| Power Consumption | Low-power design compatible with solar power systems |
| Environmental Rating | IP65-rated enclosure |
| Calibration | Factory-calibrated for CO₂, H₂O, air temperature, barometric pressure, and sonic temperature across wide operational ranges |
| Diagnostic Capabilities | Comprehensive real-time diagnostics including signal strength, window contamination status, transducer health, and acoustic path integrity |
| Data Compatibility | Native support for Campbell Scientific CR series dataloggers (e.g., CR6, CR1000X) with full integration of setup, zero/span adjustment, and configuration via direct serial or SDI-12 interface |
| Rain Mitigation | Patented hydrophobic mesh + adaptive ultrasonic signal processing to maintain wind vector accuracy during precipitation |
| Optical Design | Angled optical windows with anti-water-adhesion geometry and tolerance for mild surface contamination |
| Thermal Management | Passive temperature compensation—no active heater required |
| Brand | Palas |
|---|---|
| Origin | Germany |
| Model | Fidas 200 |
| Certification | EN 16450-compliant |
| Measurement Principle | Single-particle optical aerosol spectrometry (OPC) |
| PM Metrics | Simultaneous real-time PM₂.₅ and PM₁₀ mass concentration |
| Particle Count & Size Distribution | 18 size channels from 0.17–19.2 µm |
| Time Resolution | Adjustable from >1 s to 24 h |
| Light Source | High-stability, long-life LED |
| Data Availability | >99% uptime |
| Compliance | EN 15267-3 type approval, EN 16450 reference equivalent |
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