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Gill Maximet GMX600 Compact Weather Station

The Maximet GMX600 is an extremely low maintenance, compact and durable optical rain gauge weather station measuring rainfall, wind speed and direction, temperature, relative humidity, barometric pressure, absolute humidity, air density and wet bulb temperature readings. The built-in electronic compass automatically aligns the sensor to north. Optional GPS functionality delivers true wind measurements and automatically positions the sensor.

  • Easy Installation
  • Maintenance Free
  • Plug and Play
  • Cost Effective
  • Easy to use software
  • Robust Construction

Maximet GMX600 Compact Weather Station Description

The Gill MaxiMet GMX600 combines the GMX100, GMX200 and GMX300 into a single unit. It is extremely compact, robust and lightweight enabling accurate measurement of wind speed, wind direction and precipitation plus a wide range of weather parameters.


Three double-louvered naturally aspirated radiation shields deliver long term highly accurate weather data. Parameters measured include temperature, relative humidity, barometric pressure, absolute humidity, air density and wet bulb temperature. In addition, an integrated optical rain gauge senses rainfall as it hits its surface, automatically measuring the raindrops’ size and quantity. It then records the data from which it calculates and formats the output as if it were a traditional tipping bucket rain gauge in serial format.


In addition, a solid state ultrasonic sensor provides extremely accurate wind speed and direction measurements. An electronic compass comes as standard which delivers apparent wind, WMO wind averages and gust data.


The optional GPS adds the benefit of a true wind measurement, height above sea level, latitude, and longitude, and simplifies installation by automatically finding north.


The result is an extremely durable and cost effective maintenance free weather station widely used for applications such as agriculture, health & safety, transport, education, energy and building controls.


NOTE: The Optical Sensor provides a General Indication only of rainfall levels for use in situations where low maintenance is required. Use a tipping bucket or equivalent with a MaxiMet (e.g. GMX531, GMX550 and GMX551) where reference quality precipitation measurements are required.



• Building and industrial controls
• Authorities
• Transport
• Coastal
• Agricultural
• Safety
• Educational
• Commercial
• Energy



  • Wind speed and direction measurements
  • Integrated optical rain gauge
  • Low power mode
  • Lightweight and robust
  • Real time output
  • Easy installation
  • Compact integrated design


Wind Speed
Range0.01 m/s to 60 m/s
Accuracy(+/-) 3% to 40 m/s, (+/-) 5% to 60 m/s
Resolution0.01 m/s
Starting Threshold0.01 m/s
Sampling Rate1Hz
UnitsM/s, Km/hr, mph, kts, ft/min
Wind Direction
Range0-359 degrees
Accuracy(+/-) 3 degree to 40 m/s, (+/-) 5 degree to 60 m/s
Resolution1 degree
Starting Threshold0.05 m/s
Sampling Rate1Hz
Range-40 degree Celsius to 70 degree Celsius
Resolution0.1 degree
Accuracy(+/-) 0.3 degree Celsius at 20 degree Celsius
Sampling Rate1Hz
UnitsDegree C, F, K
Accuracy(+/-)2% t 20 degree Celsius (10% – 90% RH)
Sampling Rate1 Hz
Units%, RH, g/m cubed
Dew Point
Range-40 degree Celsius + 70 degree Celsius
Accuracy(+/-) 0.3 degree Celsius at 20 degree Celsius
UnitsDegree C, F, K
Sampling Rate1Hz
Range300 to 1100 hpa
Resolution0.1 hpa
Accuracy(+/-)0.5 hpa at 25 degree Celsius
Sampling Rate1Hz
Unitshpa, mbar, mmHgm inHg
Measurement typeOptical
Range0 to > 300 mm/hr
Precipitation Resolution0.08mm (Customer selectable)
Sampling Rate1Hz
Unitsmm/hr, mm/total, in/hr, in/total
Output Rate1s, 1 min, 1hr
Digital Comm ModesSerial RS232, RS422, RS485, SDI-12, NMEA, MODBUS, ASCII
Analogue OutputAvailable via separate optional device
Power Supply5 to 30 Vdc
Power (Nominal) 12 Vdc64 mA continuous high mode. 0.7 mA eco-power mode (1 hour polled)
IP Rating66
Operational Temperature Range-40 degree Celsius to +70 degree Celsius
EMC StandardBS EN 61326-2-1 : 2013 FCC, CFR Title 47, Part 15, Subpart B, Class A digital device
CE MarkingYes
RoHS CompliantYes


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