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| Brand | TSI |
|---|---|
| Origin | USA |
| Model | 8533EP |
| Instrument Type | Real-time Aerosol Mass Concentration Monitor |
| Detection Principle | 90° Light Scattering (Laser Photometry) |
| Mass Concentration Range | 0.001–150 mg/m³ |
| Simultaneous Size-Fractionated Outputs | PM₁, PM₂.₅, Respirable (PM₄), PM₁₀, and Total PM (<15 µm) |
| Flow Rate | 3.0 L/min (±5% accuracy, internally controlled) |
| Optical System | Sheath-Air Isolated Laser Cavity |
| Display | 5.7″ VGA Color Touchscreen |
| Data Storage | 5 MB internal memory (>60,000 data points |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −20–60 °C |
| Relative Humidity | 0–95% RH (non-condensing) |
| Time Constant | User-selectable (1–60 s) |
| Resolution | ±0.1% of reading or 0.001 mg/m³ (whichever is greater) |
| Zero Stability | ±0.002 mg/m³ over 24 h |
| Particle Size Range | 0.1–15 µm |
| Power | Rechargeable Li-ion battery (2.0 kg w/1 battery |
| Connectivity | USB, Ethernet (8533EP only), USB mass storage support |
| Analog Output | User-selectable 0–5 V or 2–20 mA |
| Alarm Output | Relay (non-latching MOSFET) or audible buzzer |
| Filter Holder | Replaceable 37 mm filter cassette (user-supplied) |
| Compliance | Designed for use in occupational health monitoring per OSHA, NIOSH, and ISO 7708 air sampling protocols |
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