Products · Air Quality
XA Series air quality sensors
On‑street sensors that calibrate themselves, run for years without a site visit and forecast pollution an hour ahead — so the traffic system has time to act.
What it is
Reference‑grade data from sensors a council can afford to put everywhere
XA Series sensors measure the gases and particles that matter — nitrogen dioxide first among them — minute by minute, and report into SenseView. AI calibrates each sensor from the sensors around it and from years of data, so drift is corrected continuously instead of by someone with a van.
Measure a hot spot, a school gate or a whole town. Combine gas sensors into a multi‑gas unit, add a particle counter, or deploy a reference sensor that gives the city its baseline. Every unit also measures temperature, humidity and pressure, and connects over Ethernet, 4G and 5G, or Mesh5G.
Why councils choose it
Built for projects that measure before and after
Up to 5 years without a visit
Long‑life sensors and AI calibration mean the spend is the purchase, not the maintenance.
Forecasts an hour ahead
The same AI predicts pollution 1 and 3 hours ahead from traffic, weather and nearby sensors — up to 95% accuracy.
Acts through the signals
Full SenseView, UTC and UTMC integration: a forecast spike can trigger a signal plan, an alert or a message.
Gas and particles
NO₂, NO, CO, CO₂, O₃, SO₂ and a laser particle counter for PM1, PM2.5 and PM10.
Prediction
Measured against forecast, hour by hour
A sensor that only tells you what has already happened leaves the traffic team reacting. XA sensors feed a forecast that is refreshed every few minutes, so gating, diversions and green waves can be applied before the peak — the method proven outside a care home in Staffordshire.
- Alerts at preset values by email, text or to the signal in‑station
- History kept for years, so any day can be replayed and compared
- Data owned by the council, permanently
Measured NO₂ against the AI’s one‑hour forecast at a roadside site.
The range
What is in the family
One sensor platform, configured for the job.
| Product | What it does | Where it goes |
|---|---|---|
| XA Gas Sensor | Single‑gas detector for NO₂, NO, CO, CO₂, O₃ or SO₂; combines into a multi‑gas unit | Hot spots, school gates, corridors |
| XA Reference Sensor | Dual NO₂ plus particles, up to nine sensors, weather station option | One or more per city as the baseline |
| XA Particle Counter | Class 1 laser counter for PM1, PM2.5 and PM10 | Alongside gas sensors, or alone |
| XA Environmental Sensor | Precision temperature, humidity and pressure; fitted to every XA unit and available on its own | Any site |
| SenseView air quality module | Live graphs, alerts, calibration, forecasting and export | Control room or cloud |
Full specifications, interfaces and options are in the product brochure, available on request. No pricing is published; every project is quoted on its requirement.
Where it is used
From a single sensor to a town‑wide plan
Healthy Streets explains the three‑step method — measure, analyse, act — and the two case studies show it working in Wolverhampton and Staffordshire.
Next step
Ask for the Air Quality brochure
Sensor specifications, accuracy, calibration method and deployment guidance for the XA Series.