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Extremely accurate solid state, temperature, relative humidity, barometric pressure, absolute humidity, air density and wet bulb temperature sensor.
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The Gill MaxiMet GMX300 is an extremely compact, robust and lightweight solution for accurately measuring weather parameters. Three double-louvered naturally aspirated radiation shields deliver long term highly accurate data. Parameters measured include temperature, relative humidity, barometric pressure, absolute humidity, air density and wet bulb temperature.
The result is an extremely durable and cost effective weather station widely used for applications such as agriculture, health & safety, transport, education, energy and building controls.
Richard Paul Russell Ltd. can connect the sensor to the WeatherFile.com website where data can be viewed using any internet connected device and downloaded for detailed analysis in a .CSV file format.
• Building and industrial controls
• Authorities
• Transport
• Coastal
• Agricultural
• Safety
• Educational
• Commercial
• Energy
• Temperature, humidity and pressure sensor
• Naturally aspirated
• UV stable radiation shield
• Dust and precipitation protected
• Lightweight and compact
• Robust construction
• Low power consumption
• No moving parts
• Extremely low maintenance
• 24 months warranty
Temp, Humidity & Pressure | Air Pressure / Temperature | |
Relative / Absolute humidity | ||
Naturally aspirated UV stable radiation shield | ||
Protection against wind-blown precipitation/dust | ||
Parameters | Temperature °C / °F / °K | |
Relative humidity & Rh | ||
Barometric pressure hPa, mbar, mm Hg, In Hg | ||
Absolute humidity g/m3 | ||
Air density kg/m3 | ||
Wet bulb temperature °C / °F / °K | ||
Angle of Tilt | ||
Outputs RS232, 422, 485 (ASCII), SDI-12, NMEA, MODBUS, Analogue (option) | ||
GPS (Manual) | Height above sea level m | |
Sunrise/sunset | ||
Position of the sun | ||
Twilight | ||
Solar Noon | ||
MSL pressure | ||
Temperature | Range | -40°C to +70 °C |
Resolution | 0.1 | |
Accuracy | ± 0.3°C @ 20°C | |
Sampling Rate | 1 Hz | |
Units | °C, °F, °K | |
Humidity | Range | 0-100% |
Resolution | 1% | |
Accuracy | ± 2% @ 20°C (10%-90% RH) | |
Sampling Rate | 1 Hz | |
Units | % Rh, g/m3 | |
Dew Point | Range | -40°C to +70°C |
Resolution | 0.1 | |
Accuracy | ± 0.3°C @ 20°C | |
Units | °C, °F, °K | |
Sampling Rate | 1 Hz | |
Pressure | Range | 300 to 1100 hpa |
Resolution | 0.1 hPa | |
Accuracy | ± 0.5 hPa @ 25°C | |
Sampling Rate | 1 Hz | |
Units | hPa, mbar, mmHg, inHg | |
Outputs | Output rate | 1/s, 1/min, 1/hr |
Digital Comms Modes | Serial RS232, RS422, RS485, SDI-12, NMEA, MODBUS, ASCII | |
Analogue Outputs | Available via seperate optional device | |
Power | Power Supply | 5 to 30 Vdc |
Power (Nominal) 12 Vdc | 5 mA continuous high mode. 0.7 mA eco-power mode (1 hour polled) | |
Environmental Conditions | IP Rating | 66 |
Operational Temperature Range | -40°C to +70°C | |
EMC Standard | BS EN 61326 : 2013 FCC CFR47 parts 15.109 |
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CE Marking | Yes | |
RoHS compilant | Yes | |
Weight | 0.5 Kg | |
Origin | UK |
User Manual | |
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MaxiMet User Manual - Issue 4 |
Choose your sensor based on the parameters you want to measure.
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GMX100 | GMX101 | GMX200 | GMX240 | GMX300 | GMX301 | GMX400 | GMX500 | GMX501 | GMX531 | GMX541 | GMX550 | GMX551 | GMX600 | |
Wind Speed | ![]() |
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Wind Direction | ![]() |
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Air Temperature | ![]() |
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Humidity | ![]() |
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Pressure | ![]() |
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Dew Point | ![]() |
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Wet Bulb Temperature | ![]() |
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Precipitation (Optical Rain Gauge) | ![]() |
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Precipitation (Tipping Rain Bucket Gauge) | ![]() |
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Solar Radiation | ![]() |
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Compass | ![]() |
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Optional GPS Positioning | ![]() |
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Side Connector for Rain Gauge | ![]() |
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If you want to discuss a bespoke system specification or have any questions call
our technical team on +44 (0) 1590 641223 or email sales@r-p-r.co.uk