Gill Instruments Limited

- Model GMX551 - Compact Weather Station



The MaxiMet range of compact weather stations is designed and manufactured by Gill Instruments. MaxiMet products use reliable, high quality instruments to provide accurate meteorological information in a wide variety of applications.

  • Temperature, humidity, pressure. A combined instrument mounted inside three double louvered, naturally aspirated radiation shields with no moving parts.The results are high performance across each measurement over long periods of time.
  • Solar radiation. An integrated solar radiation sensor/pyranometer.This highly accurate instrument uses a thermal sensor mounted at its base and protected by a single glass dome to record the amount of light in watts per metre2. It is widely used in agro-meteorological applications and for monitoring the performance of solar panels.
  • Wind. Wind speed and direction measurements are provided via an ultrasonic sensor and the addition of an electronic compass provides apparent wind measurements. Average speed and direction together with WMO averages and gust data is also provided. Add GPS (optional) to provide true wind and other features.
  • Precipitation. An integrated side connector allows users to connect any tipping bucket rain gauge and select the tip size from 0-9.998 mm. The measurements are included in the output data string.


  • Air Pressure /Temperature
  • Relative / Absolute humidity
  • Naturally aspirated UV stable Radiation shield
  • Protection against wind-blown precipitation/dust


  • Complies with ISO 9060 and WMO Guidelines
  • Output in watts per metre*
  • 180° hemispherical field of view
  • Records sunshine hours
  • Integrated Hukseflux LP02 pyranometer
  • Glass dome


  • Wind speed & direction
  • Apparent and true wind (with GPS)
  • WMO wind averages and gust
  • Compass


  • Height above sea level m
  • Sunrise/sunset
  • Position of the sun
  • Twilight
  • MSL pressure


  • Ready for customer supplied 0-9.998 mm tipping bucket rain gauge via connector


  • Solar radiation w/m* Sunshine hours hrs Solar Noon Temperature X'/T/*K
  • Relative humidity %Rh
  • Barometric pressure hPa, mbai, mm lkj,lnlkj
  • Wet bulb temperature X/°f/°K
  • Absolute humidity g/m1
  • Air density kq/m*
  • Precipitation
  • mm/hr, mmAotal, in/hr, inAotal
  • Wind speed
  • m/s, km/hr, mph, kts, ft/min
  • Wind direction'
  • Wind chill X/WK
  • True/apparent wind
  • Angle ofTilt
  • Outputs
  • RS232,4??, 485 (ASCII). SO/-1?, NMFA,
  • M0D8US, Analogue (option)

  • Quality Measurements
  • Lightweight and Robust
  • Low Power Mode
  • Free of Charge Software
  • Gill Proven Reliability
  • Compact Integrated Design
  • Real Time Output
  • Easy Installation
  • Gill Customer Support
  • 2 Year Warranty

  • Building and Industrial Controls
  • Authorities
  • Transport
  • Coastal
  • Educational
  • Agricultural
  • Commercial
  • Safety
  • Energy

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