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Aeroqual - S500 (OZU 0-0.15)

General Description

The Aeroqual Series 500 handheld monitor can be used with a wide range of gas sensor heads. The sensor head used in this AQ-SPEC evaluation is the ozone OZU 0-0.15 ppm sensor head.

Principle of Operation

The device uses a sensitive metal oxide semiconductor that relies on the conductance of heated tungstic oxide (WO3). In the presence of ozone, surface conductance of WO3 decreases. Changes in the conductance are calibrated to measure ozone concentrations. During a "flow" state the sensor responds to incoming ozone the sensor conductance decreases. The ozone measurement is proportional to the sensor conductance difference between a no-flow and flow states.


  • Dimensions: 195 x 122 x 54 mm
  • Weight: <460 g
  • Battery: Yes (Lithium 11.1V)
  • Power supply: Yes (12V DC (power adaptor/charger supplied 100-
    250V AC)
  • Sensor lifetime: N/A
  • Clock function: Yes (Real time)
  • Sampling mechanism: Fan
  • Environmental operating conditions: Temp: -40°C to 124°C; RH: 0 to 100%
  • Internal data logging: Yes (8188 total data points)
  • PC data logging: Yes (with provided Aeroqual software + cable)
  • Communications: monitor to USB cable
  • Weatherproof: No


  • Source and leak detection
  • Process control
  • Health and safety monitoring
  • Indoor air quality

Manufacturer's product webpage

    South Coast Air Quality Management District

    21865 Copley Dr, Diamond Bar, CA 91765



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