MaxiMet GMX 551

MaxiMet GMX 551

Product code: WSMM551

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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.

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GMX551 Features

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 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.

An integrated side connector allows users to connect any tipping bucket rain gauge and select the tip size from 0-9.998mm. The measurements are included in the output data string.

Key Benefits

Temp, Humidity & Pressure
• Air Pressure / Temperature
• Relative / Absolute Humidity
• Naturally aspirated UV stable Radiation shield
• Protection against wind-blown preceipitation/dust

Solar Radiation
• Complies with ISO 9060 and WMO Guidelines
• Output in watts per metre2
• 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

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

Precipitation (Input)
• Ready for customer supplied 0-9.998 mm tipping bucket rain gauge via connector

• 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, km/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)

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

Wind Speed
Range 0.1 m/s to 60 m/s
Accuracy ± 3% to 40 m/s,
± 5% to 60 m/s
Resolution m/s 0.01
Starting Speed 0.1 m/s
Sampling Rate 1 Hz
Units m/s, km/hr, mph, kts, ft/min

Wind Speed
Range 0-359°
Accuracy ± 3° to 40 m/s,
± 5° to 60 m/s
Resolution 1 °
Sampling Rate 1 Hz
Units Degrees

Range -40°C to +70°C
Resolution 0.1
Accuracy &plusnm; 0.3°C @ 20°C
Sampling Rate 1 Hz
Units °C, °F, °K

Range 0-100%
Resolution 1%
Accuracy &plusnm; 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 &plusnm; 0.3°C @ 20°C
Units °C, °F, °K
Sampling Rate 1 Hz

Range 300 to 1100 hpa
Resolution 0.1 hPa
Accuracy &plusnm; 0.5 hPa @ 25°C
Sampling Rate 1 Hz
Units hPa, mbar, mmHg, inHg

Precipitation (Input)
Measurement input type TBRG
Range 0-1000 mm/hr
Precipitation Resolution 0-9.998mm Software selectable
Units mm/hr, mm/total, mm/24 hr, in/hr, in/total, in/24 hr
Input to GMX Contact closure via an M8 male 4-Pin connector. Optional 20m cable or mating female connector required

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

Output rate 1/s, 1/min, 1/hr
Digital Comms Modes Serial RS232, RS422, RS485, SDI-12, NMEA, MODBUS, ASCII
Analogue Outputs Available via separate optional device

Power Supply 5 to 30 Vdc
Power (Nominal) 12Vdc 25 mA continuous igh 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
CE Marking Yes
RoHS compliant Yes
Weight 0.8 Kg
Origin UK

Case Study
Our following Case Studies give an overview of how this product applies to different sectors.
Please click on the title below to read the full case study.

Emergency Services
Environmental Monitoring (with SpaceLogger Data Loggers)
Environmental Monitoring (with Wind Systems)
Health & Safety Monitoring
Marine, Ships & Harbours
Outdoor Sports
Tower Cranes
Transport Safety