Category: Company news
The AQMesh small sensor air quality monitoring system already offers flexibility of monitoring location – through independent power and communications – as well as high data quality and traceability. Now the platform is even more flexible offering up to 20 different data channels. The wide range of sensors, including gases such as NO2, particulate matter (PM1, PM2.5 and PM10) wind and noise can be specified, from a single sensor to a ‘fully loaded’ mini air quality monitoring station.
The small, post-mounted monitoring pod sends raw sensor output to the AQMesh server using the mobile phone network and readings can be accessed by a secure login or API connection. Cloud data management allows settings to be changed online and makes a high level of remote support possible – ideal for monitoring in distant or hard-to-reach locations. Recent developments for 2019 mean that AQMesh offers an increased level of modularity unrivalled by any other small-sensor air quality monitoring system.
The full range of sensors includes gases NO, NO2, O3, CO, SO2, H2S and CO2. Recent work has shown the value of measuring a targeted combination of gases for a given application. For example, H2S and SO2 is popular with the oil and gas industry and measurement of CO2 is valuable as an indicator of combustion to calculate an index. The new wind speed and direction module means local pollution source apportionment can be carried out. All AQMesh pods measure environmental conditions – temperature, atmospheric pressure and RH% – in the same compact unit.
New pods can be built to almost any configuration and modifications can be and are carried out to existing pods returned to the factory. Some modifications are also possible in the field, such as adding extra gas sensors.
Most AQMesh pods are now powered using solar power and the new AQMesh solar module allows the pod and solar pack to be mounted on the same post, using the standard clips supplied, with the power cable simply connected together to start monitoring. The updated solar pack comes as a complete package with a 20W panel, more efficient charging, an additional port for powering two pods, and is now a smart system with a Bluetooth mobile app for checking the output of the panel and running basic diagnostics. Battery and direct (9-24V DC) power options are available.
AQMeshData.net is the AQMesh server which performs secure data processing using carefully developed, unique correction algorithms which compensate for cross-gas effects and environmental factors. AQMesh algorithms are fixed by version and completely traceable, with no use of machine learning or artificial intelligence. Continual development of these algorithms, using datasets from around the world which compare AQMesh readings with co-located reference data, allows AQMesh to demonstrate outstanding, accurate and repeatable performance when co-located against certified reference or equivalent methods, in any part of the world.
AQMesh pods require very little ongoing maintenance, meaning the cost of ownership remains low. Sensor replacement is recommended every 2 years and the demonstrated data stability is very high. AQMesh users also benefit from dedicated, global support from its UK base, where it is designed, developed, manufactured and distributed, as well as a network of trained distributors.
AQMesh is now able to offer CO2 and H2S within its range of gas options for local air pollution monitoring.
The NDIR CO2 sensor, which can be offered within a single AQMesh pod alongside five other gases out of NO, NO2, O3, CO, SO2 or H2S, as well as PM1, PM2.5, PM10, temperature, pressure and humidity, has been developed to deliver a higher performance than those typically used for indoor air quality monitoring. It has been rigorously tested against Picarro reference equipment, resulting in an R2 value of 0.93. Pod-to-pod correlation of over 20 AQMesh pods has shown R2 values of 0.98 and 0.99, and the sensor has a MAE (mean absolute error) of less than 20ppm.
In addition to monitoring deviations from ambient levels of CO2, elevated CO2 levels can indicate that monitoring is taking place in a combustion plume and levels of other gases can be interpreted accordingly. For example, the ratio of CO2 to the other pollutant gases present can indicate whether those gases were emitted by a local or distant source.
An additional electrochemical sensor has been introduced to offer H2S measurements. After integrating the sensor, measurements have been compared to readings from a Honeywell SPM Flex installed at a sewage treatment site with an R2 value of 0.87 over a measurement range of 0-150ppb. Particularly of interest to the oil and gas industry, in association with the SO2 monitoring already available on AQMesh, it can be used to measure emissions from sour gas and residual emissions from flaring operations.
AQMesh can measure up to 6 pollutant gases in various combinations, as well as particulate matter, humidity, atmospheric pressure and noise in one small, compact easy-to-install unit. There is a range of wireless power options, including lithium battery packs and solar panels, with information sent in near real-time to a secure server via cellular GPRS. Data can be accessed by a secure login or can be streamed via an API connection.
AQMesh pods are in use across the globe in a variety of indoor and outdoor air pollution monitoring applications, and are becoming increasingly popular in smart cities and networks. Pod performance has been proven through extensive testing in worldwide co-location comparison trials with reference equipment, which have delivered impressive and reliable correlation results.
In October, the AQMesh distributor in Germany – Envilyse – was personally invited to Austria to take part in an annual conference for the ambient air community. During the two-day event, members from the Austrian monitoring networks delivered lectures and shared information on current ambient air monitoring issues.
Envilyse currently run a number of AQMesh projects throughout Germany and Austria and were promoting AQMesh on their stand during the event.
The Parliamentary Review is an annual publication which is released to coincide with the beginning of the new Parliamentary year, acting as a guide to cross-sector best practice for the UK’s leading policy makers. The AQMesh team was invited to join Members of Parliament and celebrities at a Gala launch event in the Members’ dining room at the Houses of Parliament at Westminster, London.
AQMesh features alongside a small number of other outstanding organisations in the publication, looking back on the year in industry and how leaders have overcome challenges in the current economic and political climate.
The AQMesh feature describes how this new ‘small sensor’ system is revolutionising air quality monitoring, allowing pollution to be understood at a truly local level for the first time. “This means policy makers have the best possible change of taking informed steps to protect the public from air pollution,” comments Amanda Billingsley, Director at Environmental Instruments Ltd., the Stratford-upon-Avon based manufacturer. “AQMesh is a global sector leader and we are delighted to have our achievements recognised in this way.”
AQMesh is also working with UK, European and US authorities to help shape the certification process and develop suitable methods for assessing small sensor air quality systems. As the article explains, “because AQMesh has led the field for several years, it will help to shape the certification process by showing what is possible with such equipment”.
Read the full review here, with AQMesh featured from page 55.
AQMesh showed its versatility in the BBC’s Inside Out feature on air quality (West region). The programme aired on 6th March but is available on iPlayer at www.bbc.co.uk/iplayer/episode/b08h4m30 until 5th April. AQMesh pods were used on the back of a bicycle and inside a taxi, to show the NO2 and particulate matter exposure experienced by a cyclist and a driver.
The feature, shown in the first 10 minutes of the programme, underlines the high levels of PM 2.5 that drivers in queueing traffic are exposed to and Professor Gavin Shaddick of the University of Bath provided an overview of the issues.
The fact that battery powered AQMesh pods can be used to measure air quality in such a range of locations has made it popular with broadcasters, as well as more typical users, such as local authorities, researchers or industrial customers. AQMesh has featured recently on BBC Newsnight and Channel 4 Dispatches.
An AQMesh pod used in the recent Citi-Sense project in Norway was returned to us at the end of the project, and we were surprised at the condition. Despite the damage, this robust little pod was still working perfectly, with data still being received.
AQMesh pods are able to measure up to 6 gases, including NO2 and CO2, particulate matter, noise and atmospheric conditions within a variety of environments – and it seems they can also possibly withstand significant damage.
For more reasons to choose AQMesh, click here.
Last Monday, 17th October, BBC’s Newsnight focussed on outdoor air quality issues, with particular reference to the ongoing Client Earth court case against the government for delay in compliance with air quality regulations.
In the episode, David Grossman cycles along the A3 with an AQMesh pod attached to his bike, capturing air pollution readings in real-time. The AQMesh pod proves there are high levels of pollutants – such as NO2 – in the air as he travels.
If you are in the UK and have a TV licence, you can watch the episode here (the air quality section begins at approximately 35 mins into the episode).
Watch our webinar from today about AQMesh, covering topics including:
- What is AQMesh?
- Which ambient air pollutants does it measure – and how?
- What applications is it used for?
The AQMesh team will be delivering an Introduction to AQMesh webinar on 26th October 2016 at 4.30pm (GMT daylight time).
Topics covered include:
- What is AQMesh?
- Which ambient air pollutants does it measure – and how?
- What applications is it used for?
You can join the webinar from you computer, tablet or smartphone using the link below:
You can also dial in using your phone:
United States +1 (571) 317-3116
Access Code: 755-778-333
More phone numbers:
France +33 (0) 170 950 590
Italy +39 0 699 26 68 65
United Kingdom +44 (0) 20 3713 5011
(First GoToMeeting? Try a test session: http://help.citrix.com/getready )
For more information or help about the upcoming webinar please contact us.
At 8pm on Monday 22nd February, Channel 4 Dispatches revealed that air pollution could be much more dangerous than previously believed. The Dirty Secrets: What’s Really In Our Air? programme features AQMesh pods being used in tests to prove high levels of nitrogen dioxide (NO2) at road traffic hot spots – and even from your gas cooker – which could be a contributing factor for breathing problems and medical conditions, particularly in children, across the nation.
Watch the 30 minute programme, available for the next 29 days.
“Stable enough to be installed as long-term static detectors around a city, and sensitive enough to detect small changes in air quality on a street-by-street basis” says Professor Rod Jones of the University of Cambridge. See what else he has to say about the vision and development behind AQMesh here.