• Very easy to use
  • Fits comfortably in the hand
  • One monitor to measure 4 ranges of ozone sensor
  • Changing sensors takes seconds and can be done anywhere
  • Recalibrate sensor in the field or by returning to the factory
  • Lithium battery allows a full 8 hours in the field
  • Large display gives min., max. and average readings
  • Audible alarm to notify ozone exceedences
  • Analogue output to control external devices e.g. ozone generator


  • Ozone process control
  • Personal exposure monitoring
  • Source and leak detection
  • Health and safety monitoring

The Series 300 Portable Ozone Monitor is a versatile monitor with the ability to accurately measure 4 different ranges of ozone sensor as well as temperature and relative humidity, if required. It is designed for ozone monitoring and control in a variety of applications. Ozone concentrations can be displayed in either ppm or mg/m3 on the large LCD display. There are also user defined high and low alarm set points which will trigger an audible alarm when the ozone concentration exceeds the set point.

A key feature of the Series 300 Portable Ozone Monitor is the ability to operate in control mode. Upper and lower control limits can be easily set directly on the display. Using the 0-5V output the Series 300 can be used to switch on or off an externally connected device, such as an ozone generator, or system in the presence of a predetermined level of gas. By selecting the optional wall-mount bracket and plugging in mains power the Series 300 is effectively able to act as a fixed monitor as well as a handheld portable device.

For those wanting to recalibrate in the field the Series 300 allows adjustment of zero and span. Together with the R42 Calibration Accessory and an ozone generator this function allows the sensor head to be fully recalibrated without having to return it to the factory. Alternatively the sensor head can be returned to Aeroqual for a factory calibration which includes a renewed calibration certificate. For more on calibrating the Series 300 click here.

For more information around measuring ozone with our ozone monitors, please view our general guidelines on measuring ozone and factors that can affect ozone measurement.

  • Monitor base
  • LCD digital display
  • Lithium battery and charger
  • Zero and span adjustment
  • Low and high alarm
  • 0-5V output
  • Industrial Enclosure for Portable Monitors

    Industrial Enclosure For Air Quality Monitors

  • Large portable monitor carry case

    Large Portable Monitor Carry Case

  • Temperature & Humidity Sensor

    Temperature & Humidity Sensor

  • Lithium Battery Pack

    Lithium Battery Pack

  • Small portable monitor carry case

    Small Portable Monitor Carry Case

  • Aeroqual Handheld Wall Bracket

    Wall Bracket

  • IP41 Remote Sensor Kit

  • Remote Sensor Kit

    Remote Sensor Kit

  • Cigarette Light Adaptor

    Cigarette Light Adaptor

  • Calibration Accessory

    Calibration Accessory

If you have a question about this product, it may be covered in the FAQs section.

These cover the most common questions you may have when deciding if this is the right product solution for your air monitoring requirements.

If you can’t find what you’re looking for, please get in touch and our team will respond within 48 hours.


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