Know the Air that you Breathe Air Quality Monitoring


Alphasense 4-Electrode gas sensors operate using proven fuel cell technology.


The A4 and B4 series (4-electrode sensors) provides OEMs with reliable sensors for use in a number of high volume applications and especially Air Quality Networks where very low parts per billion (ppb) detection levels are required.


Sensors currently available include: NO2


, O3 , SO2 , CO, H2 S with more to follow.


These would typically be used in association with other Alphasense products:


PID Photo Ionisation Detector for VOCs, OPC Optical Particle Counter for Particulates typically PM1


NDIR Sensors for CO2 , PM2.5 , PM10


alphasense.com | sensors@alphasense.com


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