with FREE UK Standard Delivery
The GMX541 adds the optical rain gauge to a full range of weather parameters including solar radiation, 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.
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The Gill MaxiMet GMX541 combines the GMX101, GMX200 and GMX300 with the GMX100 optical rain gauge. It is ideal for measuring a full set of weather parameters in remote locations due to its low maintenance requirement.
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.
The thermal sensor protected by a single glass dome records the quantity of light per metre calculating solar radiation (W/m2), sunshine hours, twilight, sunrise, sunset, position of sun, solar noon and angle of tilt.
The 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 Optical rain gauge supplied provides excellent performance in a low maintenance package. The Optical RG connects via a 20m cable (included).
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.
NOTE: This optical sensor provides a general Indication only of rainfall levels for use in situations where low maintenance is required. Use a tipping bucket gauge (ARG314 or Kalyx) or equivalent with a GMX MaxiMet sensor (e.g. GMX531, GMX550 and GMX551) where reference quality precipitation measurements are required.
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.
• Solar panel performance
• 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
• Solar radiation sensor/pyranometer
• Measures light in watts per metre2
• Records sunshine hours
• Complies with ISO 9060 and WMO guidelines
• Wind sensor
• Wind speed & direction
• Apparent wind
• WMO wind averages, gusts
• Built in compass
• GPS *Optional provides true wind, latitude, longitude and height above sea level
• Precipitation sensor
• Optical rain gauge
• No moving parts unlike tipping bucket rain gauges
• 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 | ||
Solar Radiation | Complies with ISO 9060 & WMO Guidelines | |
Output in watts per metre2 | ||
180° hemispherical field of view | ||
Records sunshine hours | ||
Integrated Hukseflux LP02 pyranometer | ||
Glass dome | ||
Wind | Wind speed & direction | |
Apparent and true wind (with GPS) | ||
WMO wind averages and gust | ||
Compass | ||
GPS (Option) | Height above sea level m | |
Sunrise/sunset | ||
Position of the sun | ||
Twilight | ||
Solar Noon | ||
MSL pressure | ||
Precipitation (Input) | 0.08 mm tip Optical rain gauge (customer selectable) | |
20m Cable | ||
Parameters | Solar radiation W/m2 | |
Sunshine hours hrs | ||
Solar Noon | ||
Temperature °C / °F / °K | ||
Relative humidity % Rh | ||
Barometric pressure hPa, mbar, mm Hg, In Hg | ||
Wet bulb temperature °C / °F / °K | ||
Absolute humidity g/m3 | ||
Air density kg/m3 | ||
Precipitation mm/hr, mm/total, in/hr, in/total | ||
Wind speed m/s, hm/hr, mph, kts, ft/min | ||
Wind direction ° | ||
Wind chill °C / °F / °K | ||
True/apparent wind | ||
Angle of Tilt | ||
Outputs RS232, 422, 485 (ASCII), SDI-12, NMEA, MODBUS, Analogue (option) | ||
Wind Speed | Range | 0.01 m/s to 60 m/s |
Accuracy | ± 3% to 40 m/s, ± 5% to 60 m/s |
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Resolution m/s | 0.01 | |
Starting Threshold | 0.01 m/s | |
Sampling Rate | 1 Hz | |
Units | m/s, km/hr, mph, kts, ft/min | |
Wind Direction | Range | 0-359° |
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Accuracy | ± 3% to 40 m/s, ± 5% to 60 m/s |
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Resolution | 1° | |
Starting Threshold | 0.05 m/s | |
Sampling Rate | 1 Hz | |
Units | Degrees | |
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 | |
Precipitation | Measurement type | Optical RG |
Range | 0 to > 300 mm/hr | |
Precipitation Resolution | 0.08 mm (Customer Selectable) | |
Repeatability | 3% | |
Sampling Rate | 1 Hz | |
Units | mm/hr, mm/total, in/hr, in/total | |
Heating | n/a | |
Output | Contact closure via 20m cable to GMX | |
Global Solar Radiation | Wavelength Sensitivity | 300 to 3000 nm |
Output Range | 0 to 1600 W/m2 | |
Resolution | 1 W/m2 | |
DIN Standard | ISO 9060 Second Class | |
Sampling Rate | 1 Hz | |
Units | W/m2 | |
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 | 64 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 | 0.8 Kg (+1.1 kg Rain Gauge inc 20m Cable) | |
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