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Alphasense - Model OPC-N3 -Particle Monitor
All dimensions in millimetres (± 0.15mm): PM 1, PM 2.5 and PM 10 (PM4.25 as an option). Measures up to 40 µm for pollen detection. Reduced power standby mode. Capability to measure up to 2,000 µg/m3. Onboard temperature and humidity sensor. SPI interface not included, order code 000-0SPI-00.
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temperature and humidity sensor
particle monitoring
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- Particle range* µm spherical equivalent size (based on RI of 1.5) 0.35 to 40
- Size categorisation Number of software bins 24
- Sampling interval Histogram period (seconds) 1 to 30
- Total flow rate (typical) L/min 5.5
- Sample flow rate (typical) mL/min 280
- Max particle count rate Particles/second 10,000
- Max coincidence probability
- %concentration at 106 particles/L 0.84
- %concentration at 500 particles/L 0.24
- * Based on 100% detection efficiency at 0.35µm, 50% at 0.3µm
- Measurement mode mA (typical) 180
- Standyby mode mA (typical) < 45
- Voltage range VDC 4.8 to 5.2
- Switch-on transient mW for 1ms < 5000
- Digital interface/connections
- SPI (real-time data and communications)
- Micro USB (firmware updates and standalone mode)
- Data storage micro-SD (.CSV format) (GB) 16
- Digital interface SPI (Mode 1), USB
- Laser classification as enclosed housing Class 1
- Temperature range °C -10 to 50
- Humidity range % rh (continuous) 0 to 95 (non-condensing)
- Warranty months 24
- Weight g < 105