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Home / Articles and Press Releases / Press Release / Praxis/Handheld’ Air Quality Monitor Selected to Map Oxford Air

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Press Release

Praxis/Handheld’ Air Quality Monitor Selected to Map Oxford Air

By South Coast Science

| Read Bio

Published: August 07th, 2020

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OxAir, a partnership of independent experts dedicated to monitoring the quality of air in Oxford, selected the handheld monitor to fulfil their mission of measuring air pollution from a ‘human’ perspective. Their goal is to obtain reliable data on air quality at any specific time and location in order to inform a robust air quality improvement strategy. Data collected will also equip individuals with information about their personal travel choices, forming part of OxAir’s socially inclusive collaboration with local stakeholders.

To achieve this goal, OxAir spent nearly two years searching for a sensor which would be reliable, portable and affordable, finally settling on the Praxis/Handheld. The device has been developed for monitoring personal exposure to pollution, and essential to this is the ability to gather spatial and temporal variations in air quality via the array of built-in sensors. 

Additionally, while many lower-cost products are capable of measuring particulate only, the Praxis/Handheld is equipped with an electrochemical NO2 sensor from Alphasense, as well as those for temperature and humidity. 

Jake Backus, Project Leader, OxAir, (Managing Director, Empathy Sustainability Ltd.) said, “It turns out that measuring air quality is much more complex than most people imagine! We want to be at the forefront of reliable, portable and affordable sensor technology in order to support behaviour change and public policy.”

OxAir equipped members of the public with the device, which can easily be carried on a backpack, and used it to collect air quality information throughout the day and across the city. The data was then transmitted for analysis either via a hot-spot from the user’s phone or automatically downloaded when the device reconnected to WiFi. This has enabled OxAir to collect granular data not only about background air quality levels in Oxford but also specific levels of NO2 and particulates in the air at any given time and place across the city. As Jake explains, “This is important because human exposure to air pollution is not based on static equipment averages. Typically we are exposed to pollution at its peaks, e.g. while commuting and going to school during rush hour. These peaks often exceed legal standards of air quality, despite recorded averages being within an acceptable range.” 

David Johnson, Sales Director, South Coast Science has been very encouraged by the feedback on the OxAir Project, stating “Development of this product started way back with the development of our Praxis/Urban product for fixed air quality monitoring. The lessons we learned then about collocation and gathering of gas and particle data have been applied throughout the product range, and we are delighted to start sharing this with customers so they can enjoy the fruits of that work.”

The Praxis/ Handheld is currently in a limited beta, available to selected customers as an experimental device. Anticipated launch date Q4 2020. To hear more about this and ensure you’re first to receive launch updates, please contact us here.

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ABOUT THE AUTHOR

South Coast Science

South Coast Science was founded in 2016 as a response to a market call for a standard digital front-end for Alphasense electrochemical sensors. A gap in the market was identified for an electronic interface between electrochemical sensors and industry-standard microcontrollers, including Raspberry Pi and BeagleBone. The result was a project that more than matched its brief.

The company was founded by three engineers with experience in environmental science, ultra-low noise analogue electronics, precision electronics manufacture, device firmware, and cloud data infrastructure. The fourth part of our team is Alphasense, South Coast Science’s founding investor and technical partner. Together, we have developed unique approaches to the problems of part-per-billion gas concentration monitoring at a realistic cost.

In addition to activity in electrochemical sensing, our products support particulate monitoring, photoionisation detector (PID), and non-dispersive infrared (NDIR) sensors. South Coast Science’s customers range from electronic engineers working in the development of scientific equipment, through to those in need of packaged solutions in environmental science, environmental health, workplace health, and air conditioning equipment monitoring and management.

South Coast Science offers key differentiators in the field of environmental monitoring:

• A core design, based on experience in low-noise design and environmental science practice, that rejects exactly the upper frequency noise that typically disrupts attempts to read gas electrochems.

• An open-source software stack that provides out-of- the-box internet connectivity to standard, open data infrastructures, using the emerging environmental metadata standards.

• For each product, a set of deliverables giving the most flexibility to the customer, from circuit boards to out-of-the-box solutions.

South Coast Science continues to develop gas electrochemical systems, related hardware and open software solutions, optimised for specific monitoring settings.

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