Gill Instruments

MaxiMet GMX200

ClimateMeteorological Station & Sensors

High quality, easy-to-use, integrated weather station

Precision wind measurement instrument
Compact multi-parameter weather stations
Wind sensor with compass and optional GPS

Quantity

Overview

The MaxiMet GMX200 is a compact, ultrasonic wind sensor that measures wind speed and direction with no moving parts for low maintenance and high reliability. It features a built-in 2-axis compass, optional GPS for true wind calculation, and supports multiple output protocols including RS232, RS485, Modbus, NMEA, and SDI-12. Designed for tough outdoor use, it’s IP66-rated, operates from –35 °C to +70 °C, and runs on low power (5–30 V DC), making it ideal for remote weather stations, marine use, and integration into data logging or SCADA systems.

Typical applications

Control systems including smart buildings, agriculture and industry
Solar farms
Road and rail
Ports and harbours
Reporting systems for transport and safety
Low power/solar powered deployments and IoT applications

Key Features

Two measured parameters: Wind speed & direction, optional GPS function
Multiple additional derived parameters based on combining measured parameters, such as gust, average wind speed and corrected direction
High quality, accurate, solid-state sensors
2-axis compass
Optional integrated GPS capability available to provide location, GPS timestamp and a calculation of true wind if the platform is moving

Benefits

High quality measurement data due to careful sensor selection and extensive design testing and verification
Easy to set-up and integrate using comprehensive software to select the reported and derived parameters and measurement units required
Easy to install and long operational life, due to a compact, robust design and the selection of low maintenance sensors
Suitable for use with battery or solar systems in low power mode

Specifications


WIND SPEED
Range	0-60 m/s
Accuracy	0-10 m/s 0.3 m/s RMSE 10-40 m/s 3% RMSE 40-60 m/s 5% RMSE
Resolution	0.01 m/s
Starting threshold	0.01 m/s
Units of measurement	m/s, km/h, mph, kts, ft/min

WIND DIRECTION
Range	0-360°
Accuracy	0.5 m/s-40 m/s ±3 ° 40-60 m/s ±5
Resolution	1°
Units of measurement	degrees

OUTPUTS
Digital comms modes	RS232, RS422 RS485, SDI-12
Protocols	ASCII, SDI-12 v1.3, NMEA 0183 MODBUS (RTU and ASCII)
Data outputs rates	1/s, 1/min, 1/hour, or polled

POWER SUPPLY
Input voltage	5-30 VDC
Average current consumption @ 12 VDC	26 mA continuous mode (std unit) +9 mA with GPS option 1.3 mA eco-power mode (no GPS, 1/hr)