Kestrel Handheld Weather monitors.


Introduction to Kestrel

The Kestrel range are a small, electronic rotating vane type anemometer (wind meter). It uses high precision Zytel bearings and a lightweight impeller to provide accurate air flow measurements even at low speeds. The impeller assembly is replaceable by the user in the case of damage

Low power microprocessor technology is used to provide speed, maximum speed, average speed and units selection; functions normally only found on more expensive instruments.

Liquid crystal display has large 9mm high digits and is backlit for a clear readout in low light conditions.

Power is from an easily replaceable standard lithium coin cell battery, except for the 4500 which uses 2 x AAA batteries. These will typically give up to 300 hours of operation. The instruments automatically switches off if no keys are pressed for 45 minutes.

The Kestrel range of wind meters are made from high impact injection moulded plastic and corrosion resistant materials with the electronics fully sealed. It will float if accidentally dropped into water. There is a hard cover for protection when not in use and a lanyard is provided for added security.

Typical Applications

  • Agriculture - checking conditions prior to crop spraying or burning
  • Aviation - gliders, para-gliders, micro-lights, parachutists and ballooning
  • Construction - site safety, working conditions, working at height in cranes or access vehicles
  • Education - air flow experiments, environmental studies, outdoor sports
  • Heating and Ventilation - Air flow through fans, checking condition of filters
  • Industry - air flow measurements, pollution control
  • Science - aerodynamics, environmental science and meteorology
  • Fire Fighters - checking fire spreading hazard
  • Outdoor activities - sailors, walkers, model boats/air craft, kite flyers, archery, shooting, fishing, golf & athletics
  • Model Range

    Instromet Weather Systems currently offers the four below Kestrel models:


    Kestrel 1000 measures

    Kestrel 1000

  • Current wind speed
  • Average wind speed
  • Maximum wind speed

  • datasheet...


    Kestrel 2000 measures

    Kestrel 2000

  • Current wind speed
  • Average wind speed
  • Maximum wind speed
  • Temperature
  • Wind Chill

  • datasheet...


    Kestrel 3000 measures

    Kestrel 3000

  • Current wind speed
  • Average wind speed
  • Maximum wind speed
  • Temperature
  • Wind Chill
  • Heat index
  • Dew Point
  • Relative Humidity

  • datasheet...


    Kestrel 4500 measures

    Kestrel 4500

  • Current wind speed
  • Average wind speed
  • Maximum wind speed
  • Wind direction
  • Crosswind
  • Headwind/tailwind
  • Temperature
  • Wind Chill
  • Heat index
  • Dew Point
  • Relative Humidity
  • Barometric pressure
  • Altitude
  • Density altitude
  • Wet bulb temperature
  • Digital compass
  • Time & Date

  • datasheet...


    Generic Parameter Specifications

    Choice of measurement units

  • kt, m/s, km/h, mph, ft/min, Beaufort
  • º, cardinal points
  • º C, º F
  • %
  • mbar, inHg, hPa, psi
  • m, ft
  • Accuracy

  • Speed ± 3% of reading or ± 0.1m/s
  • Direction ± 5 º
  • Crosswind, headwind, tailwind ± 5%
  • Temperature ± 1 º C
  • Relative humidity ± 3%
  • Dew point ± 2 º C
  • Barometric pressure ± 1.5mbar
  • Operational Range

  • Speed 0.6 to 60 m/s
  • Direction 360 º
  • Crosswind, headwind, tailwind 0.6 to 60 m/s
  • Temperature -45 to +125 º C
  • Relative humidity 0 to 100%
  • Barometric pressure 10 to 1100mbar
  • Specification Range

  • Speed 0.6 to 40 m/s
  • Direction 0 to 360 º
  • Crosswind, headwind, tailwind 3.8 to 40 m/s
  • Temperature -29 to +70 º C
  • Relative humidity 5 to 95%
  • Barometric pressure 750 to 1100mbar

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