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How your AQY 1 Works
The AQY 1 does all measurement on the instrument; there is no correction of
the data on the cloud. We believe this ensures the integrity of the data and
helps to maintain confidence in the measurement. It is also in keeping with the
IoT trend for increased ‘processing at the edge’.
Fans of our ozone sensors will be pleased to know
that we’re still using our patented world class GSS
ozone sensor. Outside of the AQM and AQS
products, the GSS ozone sensor still performs
extremely well in the AQY 1 as various independent
evaluations have shown.
The NO
2
measurement is also unique. We’re using our selective ozone sensor
to correct for ozone interference on the electrochemical NO
2
sensor (a
technique patented by Aeroqual). What this means is that the AQY 1 delivers a
real NO
2
measurement rather than an approximation of NO
2
as delivered by all
other devices that use an electrochemical NO
2
sensor. This is because all
electrochemical NO
2
sensors are cross sensitive to ozone, and all
electrochemical ozone sensors are cross sensitive to NO
2
. Because we use a
GSS ozone sensor which is highly selective to ozone, it allows us to use this
technique to provide a highly accurate NO
2
measurement. The algorithm is
embedded in the device itself and occurs in real-time.
The PM
2.5
and PM
10
measurements are delivered by an
optical particle counter which uses a well-known light
scattering method to size and count particles and then
convert them to a mass fraction. In humid conditions light
scattering is susceptible to humidity artefacts which over-
report particulate levels due to ‘fogging’ where the
particles are encapsulated by moisture and appear larger
to the sensor than they actually are. We correct for this
effect by way of a humidity correction algorithm.
Find out more about Aeroqual’s technology:
https://www.aeroqual.com/company/our-technology
Summary of Contents for AQY 1
Page 1: ...AQY 1 User Guide ...
Page 2: ...User Guide Revision History Date Revision Description of change Jun 2018 1 0 First release ...
Page 25: ...Page 25 Dimensions 215 mm 100 mm 125 mm incl bracket 175 mm ...
Page 29: ...Page 29 For your notes ...
Page 30: ...Just a handful of customers who chose Aeroqual ...