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| Brand | Thermo Fisher |
|---|---|
| Origin | USA |
| Model | 5028i |
| Measurement Principle | Beta-ray Attenuation |
| Measured Parameters | PM₁₀ and PM₂.₅ |
| Measurement Range | 0–10 mg/m³ (0–10,000 µg/m³) |
| Sampling Flow Rate | 1 m³/h |
| Detection Limit | <1 µg/m³ (24-hour average) |
| Flow Stability | High stability |
| Regulatory Compliance | U.S. EPA EQPM for PM₁₀ (EQPM1102-150) and PM₂.₅ (EQPM0609-183) |
| Brand | Thermo Fisher |
|---|---|
| Origin | USA |
| Model | Thermo Scientific TEOM 1405DF / 1405F |
| Measurement Principle | Tapered Element Oscillating Microbalance (TEOM) |
| Measured Parameters | PM₁₀, PM₂.₅, TSP, PM₁.₀ |
| Measurement Range | 0–1,000,000 µg/m³ |
| Detection Limit | 0.1 µg/m³ |
| Sampling Flow Rate | 3 L/min (main), 12–13.67 L/min (bypass) |
| Flow Stability | ±75% for mass measurement |
| Data Storage Capacity | 5,000,000 records |
| Reporting Interval | 6-minute updates with 1-hour rolling averages |
| Accuracy | ±2.0 µg/m³ (1-hr avg), ±1.0 µg/m³ (24-hr avg) |
| Resolution | 0.1 µg/m³ |
| Calibration Traceability | NIST-traceable mass and flow standards |
| Compliance | Designed to meet U.S. EPA Reference Method EQPM-0899-007 (PM₂.₅), EQPM-0899-008 (PM₁₀), ISO 20581, and applicable EN 12341 requirements |
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