Bristol Industrial & Research Associates Ltd (Biral), now trading as Senseca UK

The VPF-730 delivers accurate visibility (MOR) and present-weather measurement in a compact, robust package using a 45-degree forward-scatter principle.

The CBME80B is a compact, lightweight standalone ceilometer that measures cloud and aerosol height profiles using an eye-safe diode-laser LIDAR technique.

The VPF-750 is the most advanced sensor in the VPF range, adding the ability to report freezing precipitation beyond the codes typically available from a forward-scatter sensor.

The SWS-200 provides accurate visibility (MOR) measurement plus a core set of WMO present-weather codes.

The ALS-2 determines background light levels in all weather conditions and is a core component of Runway Visual Range (RVR) systems, where it is typically mounted alongside the runway and deployed with a visibility meter.

The BTD-300 is a standalone sensor that reliably detects all forms of lightning — cloud-to-cloud, cloud-to-ground and intra-cloud — using passive quasi-electrostatic sensing of the atmospheric electric field.

The SWS-250 measures Meteorological Optical Range and reports an extended set of present-weather conditions for airport and ATC use.

The BTD-200 is a complete, out-of-the-box lightning warning system that detects all lightning activity using quasi-electrostatic measurement of the local electric field and charged precipitation, providing warnings up to 20 minutes before lightning begins.

The BTD-350 is a standalone passive thunderstorm detector that reliably detects all forms of lightning using quasi-electrostatic atmospheric field sensing, with an 83km range that exceeds US FAA aerodrome requirements.