The Casella Microdust 880nm User Manual explains operation, calibration, maintenance, specifications and data‑logging for the aerosol monitoring system.
The Casella Microdust 880nm Aerosol Monitoring System is a portable instrument for real‑time measurement of particulate mass concentration (mg/m³). It uses a forward‑scatter infrared (880 nm) technique and includes an optional data logger and Windows‑based WinDust software for data download and analysis.
The manual covers safety warnings, battery charging, probe handling, instrument setup, data‑logging functions, calibration procedures, maintenance, specifications and a list of compatible accessories and spare parts.
| Measurement ranges | 0‑2.5, 0‑25, 0‑250, 0‑2500 mg/m³ (and equivalent g/m³ options) |
|---|---|
| Operating temperature range | 0 °C to 40 °C (non‑condensing) |
| Storage temperature range | -20 °C to +55 °C |
| Calibration method | Gravimetric method using ‘Arizona Fine’ calibration dust |
| Zero stability | ±1.5 µg/m³/°C |
| Span stability | < 1 % FSD/°C |
| Battery | 7.2 V 800 mA NiCd (intrinsically safe version includes power‑limiting resistors) |
| Operating duration | > 10 hours on a full charge (≈ 8 hours for 0‑2.5/0‑25 mg/m³ versions) |
| Analogue output | 0‑2.5 V DC, 1 kΩ output impedance |
| Display | 16‑character × 2‑line alphanumeric LCD with LED back‑light |
| Weight (instrument only) | 1.5 kg |
| Dimensions (instrument) | 195 mm × 100 mm × 40 mm (H × W × D) |
Charging the NiCd battery pack takes approximately 12 to 14 hours to reach full capacity.
Intrinsically safe models are rated EEx ia IIC T4 and must be kept inside the leather case when used in hazardous areas.
No. The charger is not certified for explosive atmospheres and must not be used in controlled areas.