Aerosol Instrumentation >> Droplet Measurement Technologies

Photoacoustic Extinctiometer (PAX)

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      Detailed Specs

      • Measured Parameters: Absorption coefficient, Babs Scattering coefficient, Bscat
      • Auxiliary Parameters: Temperature Pressure Relative Humidity
      • Derived Parameters: Black carbon (BC) mass Extinction coefficient, Bext Single scattering albedo, SSA Dew Point
      • Measurement Range – Absorption and Scattering: < 1 Mm-1 – 10,000 Mm-1 (870 nm, 60 sec. averaging)
      • Laser: 870 nm (1.4 W) Modulation Frequency: 1500 Hz nominal, square wave
      • Angular Integration for Scattering: 6° to 174°
      • Sample Flow: 1 L/min Flow Control: Critical orifice Diaphragm Pump
      • Response Time: < 10 sec; one-second resolution
      • Data Averaging Time: 1, 10 or 60 seconds, user selectable
      • Zero Check: On demand, or automated at user selectable interval at 5, 15, 20, 30, or 60 minutes. Zero check with high-efficiency filtered air sample.

      Front Panel Features

      • Graphical colour touch-panel display screen
      • Two USB-A ports
      • Power switch
      • User interface via touch screen or standard keyboard

      Rear Panel Connections

      • Sample inlet (compression fitting for ¼” tube)
      • Pump exhaust (compression fitting for ¼” tube)
      • AC and DC power connections
      • Serial RS-232 jack
      • Ethernet port
      • Two analog BNC inputs
      • Four analog BNC outputs

       

      • Data Storage Capacity: > 200 days
      • Communications Output: Ethernet 100/10 Mbps, RS-232 Serial
      • Power Requirements: 90 – 264 V, 47 – 63 Hz (AC Power) or 12 VDC Power Consumption 45 W
      • Dimensions: 18 cm H x 48 cm W x 61 cm D; rack mountable
      • Weight : 18 kg
      • Environmental Operating Conditions Temperature: 0 – 40°C (32 – 104°F) RH: 0 – 90% RH non-condensing

      Computer Requirements for PMC Software (Computer not included):

      • Windows XP, Vista, or Windows 7
      • Minimum 1GB RAM

      Accessories

      • Hard-shell shipping case suitable for frequent travel
      • PM 1.0 cyclone inlet (1 litre/min) for particle size selection
      • PM 2.5 cyclone inlet (1 litre/min) for particle size selection