Thunderstorm detector for long-range lightning warning

BTD-300

Thunderstorm detector for long-range lightning warning, detecting cloud-to-cloud, cloud-to-ground and intra-cloud lightning up to 83 km, with quasi-electrostatic sensing, RS422 or Ethernet output and optional relays.
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Introduction

Sites with exposed people, assets or operations need lightning information early enough to act. The BTD-300 detects all forms of lightning out to 83 km and monitors local electric field strength and charged precipitation to warn of overhead strike risk before the first flash.
 
Its passive quasi-electrostatic principle measures low-frequency atmospheric electric field changes instead of relying on radio waves, giving high immunity to man-made RF interference and a false alarm rate below 2%. Detection efficiency reaches 95% for a single flash and 99–99.9% for storms with multiple flashes within 56 km.
 
The detector fits advanced weather monitoring and safety systems through RS422 or Ethernet output, with supplied PC display and logging software for local operation. Optional relay outputs support automatic local warnings, while IP66 stainless steel and powder coated aluminium construction supports operation from -40 °C to +60 °C, or -50 °C with extended heating.

Earlier risk warning
Detects charged precipitation and electric fields before the first overhead flash
83 km detection
Detects all lightning types up to 83 km with 10 m range resolution
Low false alarms
Quasi-electrostatic sensing gives high RF immunity and a false alarm rate below 2%
System integration
RS422 or Ethernet output supports weather monitoring and safety systems
Outdoor endurance
IP66 housing operates from -40 °C to +60 °C, or -50 °C with extended heating
Certified detection
Meets EN50536 Class 1 and IEC 62793 Class A performance requirements

Features

Quasi-electrostatic principle

The detector uses three antennas to measure low-frequency atmospheric electric field disturbances caused by lightning.

Lightning type detection

The system detects cloud-to-cloud, cloud-to-ground and intra-cloud lightning discharges.

Output and reporting

Ethernet or RS422 outputs provide self-test status, thunderstorm warning status, flash time, flash range and optional flash direction.

PC software

Supplied display and logging software supports local operation, monitoring and recorded lightning data.

Optional relays

The relay option provides three volt-free contacts for caution state, warning state and alert state.

Optional direction finding

The direction finder add-on reports lightning direction with 1° resolution, qualified by electrostatic ranging.

Configurable thresholds

Warning thresholds are user configurable to adapt the detector to site requirements.

Field test option

The optional battery Field Test Unit simulates lightning at different ranges for commissioning and routine checks.

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