Automatic Weather Station

Rugged Solid-State Weather Station

The NBC5056 Weather Station is designed for military applications requiring Nuclear, Biological, and Chemical (NBC) contamination and decontamination survivability. The NBC5056 is a compact, self-contained, automatic station with no moving parts. The weather sensors and data acquisition computer are all contained in a single unit that is easy to install. The NBC5056 reports wind speed and direction, temperature, barometric pressure, and relative humidity. Additional external sensors can be added through an expansion input. This station is ideal for the harsh environments found on military armored tanks and reconnaissance vehicles with severe motion, shock, impact and vibration.

Unique to the NBC5056 is its patented Thermal Field Variation technique for measuring wind speed and direction. The station detects thermal field changes caused by wind passing by a heated cylinder. It is the high technology equivalent to the traditional rifleman’s wet finger held to the wind. The NBC5056 is very accurate, responds rapidly to wind changes, and has zero starting threshold. There are no bearings or potentiometers to corrode or wear out, and the station is not effected by snow or ice. The TFV technique overcomes the problems exhibited by hot-film and ultrasound anemometers during extreme weather or when airbrone fibers, dust, or exhaust are present. The NBC5056 has demonstrated its reliability and performance on militry tanks, NBC reconnaissance vehicles, naval ships, and marine oil platforms.

The NBC5056 ia a militry qualified meteorological system. All components are enclosed in an NBC survuvable, sealed, submersible housing. The package contains a computer for determining weather parameters, performing self-diagnostic tests, and transmitting data and status information. The NBC5056 ia capable of communication over wire-line, radio telemetry, or multi-point network via its serial digital RS-422 outputs.


Rugged * Intelligent * Reliable

  • Wind Speed
  • Wind Direction
  • Air Temperature
  • Barometric Pressure
  • Relative Humidity
  • Auxiliary Sensors
  • Serial Digital Output
  • Automatic Self-Test
  • Military Qualified
  • No Moving Parts
  • Accurate
  • Zero Threshold
  • Fast Response
  • Automatic Deicing
  • Resistant to Severe Environments

  • Applications

    The NBC5056 Weather Station is ideal for military NBC applications in severe and harsh environments.

  • NBC Reconnaissance
  • Armored Tanks
  • Man-Portable Stations
  • Ships And Buoys
  • Coastal Stations
  • Offshore Platforms
  • Technical Specification

    Wind Speed

    Range   0 - 60 m/s
    Accuracy (RMS)   0.1 m/s at 0 m/s to 3 m/s
        0.5 m/s at 3 m/s to 6 m/s
        0.5 m/s ± 5% above 6 m/s
    Resolution   0.1 m/s

    Wind Direction

    Azimuth   0 360º (no electrical gap)
    Accuracy (RMS)   ± 3º
    Note that starting threshold and distance constant are not relevant performance characteristics for the TFV sensor.

    Air Temperature

    Range   - 50º to + 70ºC
    Accuracy (RMS)   ± 1ºC
    Resolution   0.1ºC

    Barometric Pressure

    Range   600 to 1100 mbar
    Accuracy (RMS)   ± 1 mbar at 20º C
        ± 3 mbar, -40º C to ±50º C
    Resolution   1 mbar

    Sample & Self-Test Rate Every 10 msec

    Start-up   Automatic, <20 seconds from
        power on to first valid output
    Output Rate   Every 100 msec
    Signal Output   RS-422, 9600 baud, full or half duplex

    Physical Characteristics


    Input Voltage   24 VDC ± 6V
    Typical Power   < 10 watts
    Peak Current   1.5 A (at power up)
    Operating Temperature   - 50ºC to + 70ºC
    Storage Temperature   - 50ºC to + 95ºC
    Operating Humidity   100%, fully sealed


    Height:   550 mm (21.65”)
    Diameter:   80 mm (3.15”)
    Weight   3.2 kg (7lbs)

    Standard Features

  • Wind speed measurement
  • Wind direction measurement
  • Density altitude compensation of wind measurements
  • Air temperature measurement
  • Barometric pressure measurement
  • Relative humidity measurement
  • Automatic cyclic self-testing and reporting
  • RS-422 serial digital output
  • MS type circular connection for power and output
  • NBC sealed, weather-proof, submersible enclosure

  • Options

  • Auxiliary sensors
  • Telemetry modems for outdoor environments
  • AC/DC power supply in a weather-proof enclosure
  • DC/DC power supplies
  • Magnetometer compass for automatic north alignment
  • Data display and archive software for PC type computers
  • Voice output over radio or telephone
  • Network and systems design assistance
  • Extended hardware warranty
  • Installation and training.